Side-bending Test Research Articles

Influence of dual axial magnetic field and welding parameters on weld characteristics in GTAW process

A methodology has been proposed that is capable of altering arc shape as per the requirement using an external magnetic field. Eight magnetic configurations were explored, out of which the N-S-S-N configuration yielded a wider bead width and lower penetration without any change in process parameters, which is more suitable for cladding and hard-facing applications. The central composite design technique has optimized the process parameters to achieve the maximum cladding width. Further, the effect of the selected configuration on the characteristics of claddings in terms of bonding strength, microhardness, and metallurgical properties have been investigated at optimal parameters. This investigation selected the SA 516 grade 70 as a substrate and SS 308 L as a cladding material. It was observed that bead width increases with increased excitation current and decreased travel speed. The maximum bead width (10.89 mm) was achieved at a 1.8 A excitation current and 1 mm/sec travel speed. The experiment has been conducted on the optimized value of process parameters to validate the developed model. A comparative study between magnetically controlled (MC-GTAW) and conventional GTAW processes. The result revealed that the MC-GTAW process has wider bead width (9.95 mm) and higher average hardness (391.45 HV), which is 67% and 15% more than that of the conventional GTAW process, respectively. The microstructure analysis has revealed that the MC-GTAW process yielded more granular bainite and refined grains. The claddings were subjected to a side bend test, which showed a good bonding strength between the substrate and the deposited metal.

Waste to wealth: development of cladding flux from steel slag for submerged arc welding

A novel methodology has been developed which permits to transform waste slag into welding flux meant for stainless steel cladding. The developed flux has been applied for stainless steel cladding using submerged arc welding process. The claddings prepared using developed flux has been evaluated in terms of bead geometry, mechanical properties and chemical composition. The depth of penetration, weld bead width and height of reinforcement achieved with developed flux are 7.64 mm, 14.01 mm, and 4.07 mm, respectively, which are superior than obtained with fresh flux (8.05 mm, 12.85 mm, and 3.44 mm), as far as cladding is concerned. It observed that the developed flux is capable to produce chemical composition of claddings as per ASME SFA 5.4 standard. The percentage of chromium, nickel and manganese in claddings is 18.1%, 8.56% and 1.04% respectively which satisfy the ASME requirements. The side bend test proves a good bonding strength between substrate and claddings. The hardness of claddings produced with developed flux is also comparable with that of fresh flux. The average hardness of cladding produced with developed flux is 459 Hv, compared with that of fresh flux (435 Hv). The cost of developed flux is 54.86% economical than that of fresh flux. This research advocates that steel slag could be utilized as a raw material for manufacturing welding flux for stainless steel cladding.

Study of dual pulse gas metal arc welding process characteristics on IS 2062 steel

Dual pulse gas metal arc welding (DP-GMAW) is a superior welding process where the weld quality and strength of weldment is highly dependent on weld input parameters. It is important to understand the effect of different input parameters on the effectiveness of welding, especially for commonly used mild steels such as IS 2062. This work attempts to study the effect of current, voltage, wire feed rate (WFR) and standoff distance (SOD) during DP-GMAW of IS 2062 steels. The interaction of WFR and varying welding current, voltage, weld pool geometry and %dilution was investigated through bead-on-plate weld method. A plate was welded using DP-GMAW process with a WFR of 8 m/min, SOD of 15 mm and a travel speed of 25 cm/min. The side and face bend tests of DP-GMA welded plates revealed that the weld quality was good without any crack. The hardness of the weld zone was significantly higher than the base metal. The strength, elongation and Charpy V-notch impact energy of the weldment was comparable to that of the base metal. A simultaneous increase of microhardness and toughness of the welded sample was observed. Metallographic tests revealed that this phenomenon was due to the presence of fine grain structure containing acicular ferrite and Widmanstatten ferrite in the weld metal which was generated due to the superimposition of current pulsation over thermal pulsation during DP-GMAW process.

Is Weekly Frequency of Yoga Practice Sufficient? Physiological Effects of Hatha Yoga Among Healthy Novice Women.

Beneficial physical and physiological health outcomes of yoga practice are well-supported by empirical data. However, whether weekly frequency of training is sufficient to evoke positive changes, is still an open question. The present intervention study investigated the effects of 10 weekly sessions of beginner level hatha yoga with respect to indicators of physical fitness and physiological markers. 82 young women (mean age of 22.0 ± 3.83 years) participated in the study. The yoga group (N = 49) attended a yoga course consisting of 10 sessions (1.5 h each) on a weekly basis. The control group (N = 33) did not receive any intervention. BMI, body fat percentage, balance (one-leg-stand test with open and closed eyes, functional reach test), flexibility (side bend test, modified sit and reach test) core muscle strength (plank test) as well as resting heart rate (HR), and heart rate variability (HRV) were assessed 1 week before and after the course. Both frequentist and Bayesian analysis showed an improvement in flexibility and balance in the yoga group compared to the control group. The yoga group showed also increased core muscle strength. No changes with respect to BMI, body fat percentage, resting HR and HRV were found. Ninety minute beginner level hatha yoga classes were characterized by 93.39 HR and 195 kcal energy consumption on average. The present findings suggest that weekly setting of a 10-session long hatha yoga training leads to improvements in balance, flexibility and core muscle strength among healthy young women. However, for changes in BMI, body fat percentage, resting HR and HRV longer, and/or more intense interventions are needed.

Effect of Post-Weld Heat Treatment Conditions on Mechanical Properties, Microstructures and Nonductile Fracture Behavior of SA508 Gr.1a Thick Weldments

This study analyzes the effects of post-weld heat treatment (PWHT) on the mechanical properties and microstructures of SA-508 Gr.1a welds and proposes a new PWHT exemption criterion based on nonductile fracture evaluation considering welding residual stress. The welding coupons were prepared with submerged-arc welding, gas-tungsten arc welding, and shielded-metal arc welding, using ferritic steel, SA-508 Gr.1a. The microstructure of the heat-affected zone (HAZ) was analyzed using optical microscopy, electron-back-scatter diffraction and Vickers hardness testing. The mechanical properties of the welds were evaluated by uniaxial tensile test, transverse side bend test, Charpy V-notch impact test and side bend test. Bainite and ferrite structures formed mainly in the HAZ, and the grain size became coarser with proximity to the surface and fusion line. The mechanical properties did not depend strongly on PWHT, weldment thickness or welding techniques, and they satisfied the welding procedure qualification test specified in the ASME Boiler & Pressure Vessel code. Welding residual stresses were considered in assessing structural integrity using nonductile fracture evaluation. A margin of safety against nonductile fracture with residual stress was calculated for Korean Standard Nuclear Power Plant steam-generator welds, using its design parameters and operating conditions, and this safety margin is suggested as an acceptance criterion for residual stress for exemption from PWHT.Graphic abstract

The Interface Zone of Explosively Welded Titanium/Steel after Short-Term Heat Treatment

This work presents a detailed description of a bonding zone of explosively welded Ti/steel clads subjected to stress relief annealing, applied in order to improve the plasticity of the final product. The typical joint formed by the welding process possesses a characteristic wavy interface with melted regions observed mainly at the crest regions of waves. The interface of Ti/steel clads before and after annealing was previously investigated mostly in respect to the melted regions. Here, a sharp interface between the waves was analyzed in detail. The obtained results indicate that the microstructure of a transition zone of that area is different along the width. After the heat treatment at 600 °C for 1.5 hours, titanium carbide (TiC) together with α-Fe phase forms at the interface in local areas of relatively wide interlayer (~ 1 µm), while for most of the sharp interface, a much thinner zone up to about 400 nm, formed by four sublayers containing intermetallic phase and carbides, is present. This confirms that carbon diffusion induced by applied heat treatment significantly influences the final microstructure of the Ti/steel interface zone. Side bending tests confirmed high plasticity of welds after applied heat treatment; however, the microhardness measurements indicated that the strengthening of the steel in the vicinity of the interface had not been removed completely.

Development of an Imaging Evaluation System for Low Back Pain

PurposeTo design a low back pain (LBP) imaging evaluation system for non-professional operators, quantifying risk of LBP in patients and asymptomatic individuals.MethodsTwenty-one previously asymptomatic subjects and five LBP patients diagnosed by a physician performed a series of test movements under a fixed camera, including hip abduction test, forward bending test, side bending test, double legs lowering test (DLLT), and modified Thomas test. The video clips were analyzed by a system program interface and were classified into a score from 1 to 4. The average total scores of the two groups were compared. Five intact subjects were retested to verify reliability. Twelve intact subjects and three patients’ clips were viewed by an experienced therapist to verify system validity.ResultsThe average total scores of two groups were significantly different (p = 0.0004). The results of hip abduction test, forward bending test, side bending test and DLLT showed significant differences between the two groups. The total score of two trials in the retest experiment exhibited a similar result (p = 0.058), with good linear correlation (r = 0.98). The total scores of the evaluations by the experienced therapist and the system program interface agreed with each other (p = 0.141; linear correlation r = 0.90).ConclusionThe evaluation system showed potential utility in screening LBP risk, with acceptable test–retest reliability and expert validity.

Effectiveness of stretching exercise on physical fitness performance

The study will be constituted on 30 Chaudhary Devi Lal University Students. Out of which 20 males and 10 female students Department of Physical Education. The experimental method was adopted for this study. The investigator defined the population for the study as 30 Chaudhary Devi Lal University Students. The pre and post test data of all the subjects was collected. The post test data was collected after 3 weeks of pretest data during this period certain stretching exercise were given to the subjects. The data was computed using mean and S.D. of the measured scores. The pre and post test data was analyzed using T-test and the level of significance was set at 0.01. Tools: Sit and Reach Flexibility Test, Side-Bending Flexibility Test, AAHPERD Functional Fitness Test. According to the results of pre and posttest after taking the test by AAHPERD Functional Fitness Test, hypotheses are significant difference in the stretching ability of the male players, the stretching ability of the female players, the components of sit and reach flexibility test on the male players, and the components of side bending test on the female players. Sit and reach flexibility test: Measurement of the flexibility to Sit and Reach Flexibility Test. Table no. 31 show the data Sit and Reach Flexibility Test. Side-bending flexibility test: Measurement of the side bending flexibility test. Table no 32 show the result of Side-Bending Flexibility Test. AAHPERD Functional Fitness Test.

Skeletonization of the Straight Leg Raise Movement using the Kinect SDK

Biomechanics is widely used as a basis for research in studying disorders of the movement system in the human body. The development of biomechanics has an effect on the field of physiotherapy. Various physiotherapy tests or studies have been developed by researchers to identify and analyze the causes of movement disorders in the human body. Physiotherapy tests performed to detect movement disorders in the human body include: Hawkin Test, Standing Hip Flexion, Standing Trunk Sidebend Test and Straight Leg Raise Test. Straight Leg Raise test is a test to lift one leg straight up in a lying down position. In the medical field, Straight Leg Raise (SLR) movement is very specific for lower lumbar disc herniation and through the use of a device called Kinect which is a color based camera (RGB) and depth camera that can detect movement and track the human skeleton. To get the human body skeleton is through the stages from RGB image acquisition, pose calibration, depth image, skeletonization to feature extraction of the two legs that can form ROM. The result of this study, Kinect is able to track the user's foot frame in SLR pose. Kinect can be relied upon to be used as a tool for detecting and tracking skeletons, and can then be used to measure SLR ROM in real time and analyze low back pain problems and measure effectiveness in physiotherapy.

Microstructure and Mechanical Properties of the Enclosure Welding Joint for ITER Correction Coils Cases

To resist the alternating electromagnetic loads, the International Thermonuclear Experimental Reactor (ITER) correction coils are protected by a 20-mm-thick 316LN austenitic stainless steel case. According to the strict tolerance requirement of the case manufacture, laser welding was applied to enclosure welding of the cases with a 20-kW high-power laser for root pass and Tungsten Inert Gas welding was applied for filler and cover passes. In this study, the microstructure and mechanical properties of enclosure welding joint were investigated to evaluate the quality of the joints. No porosity, crack or lack of fusion was found on the cross-section of the joints. The microstructure in the weld zone is single austenite phase and the morphology of the joint consists of cellular crystal, columnar crystal, and small amount of the equiaxed grain. The average tensile strength of the joint is 590 MPa, which is 98.3% of the strength of the base material of 600 MPa. The fracture position is located at the base material with an apparent necking morphology, which confirmed the good plasticity. The side bend test specimens were subjected to significant plastic deformation, which bent through 180° and no surface crack can be found. The impact toughness of the weld joint at 4.2 K is larger than 180 J/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , and the fracture surface is composed of fine equiaxed dimples and tearing ridges, which indicates that the specimens failed in a ductile manner. All of the test results satisfy the ITER requirements.

A Unique Overuse Stress Injury In A Professional Triathlete

HISTORY: A 28-year-old male professional triathlete presented with acute on chronic low back pain for five days after completing an Olympic distance triathlon. He developed low back and hip pain the evening of the race. Pain was worsened by laying supine, sitting and walking. He reported back stiffness, which improved through the day. PT and dry needling offered little improvement. Nine months earlier he was seen for low back pain, diagnosed with sacroiliitis. This was managed by a licensed physical therapist with resolution. MRI performed years earlier identified disc bulge at L3-4. PHYSICAL EXAMINATION: Inspection was unremarkable, without swelling, deformity, or ecchymosis. Mild tenderness over the piriformis and gluteus medius. No point tenderness over the PSIS, SI joints, or spinous processes. Range of motion of the trunk was full but painful with extension, rotation to the right, and Kemp test to the right. No pain with trunk flexion, rotation to the left, side bending, or Kemp test to the left. Familiar right posterior hip pain with axial load of the flexed hip. Pain with resisted hip flexion on the right. Mild familiar right posterior hip pain with resisted hip flexion on the left. FABER, piriformis stretch, SI torque tests, and straight leg raises negative bilaterally. DIFFERENTIAL DIAGNOSIS: 1. Strain of pelvic muscle 2. Sacroiliitis 3. Pelvic stress injury 4. Lumbo-sacral radiculopathy TEST AND RESULTS: MRI pelvis without contrast revealed bone marrow edema of the right inferior iliac bone adjacent to the SI joint with subtle incomplete fracture line, suggesting grade 4 stress fracture. Calcium, alkaline phosphatase, phosphorus, and magnesium levels within normal range. 25-OH-Vitamin D within normal range, perhaps lower end for high-level athlete (46.6 ng/mL). CBC and celiac screening within normal limits. FINAL WORKING DIAGNOSIS: Stress fracture right iliac bone TREATMENT AND OUTCOMES: 1. 8-weeks rest from impact activities (running and cycling). 2. Swimming with pull buoy for 4 weeks with gradual kicking introduction. 3. Elliptical and aerobic cycling at 6 weeks, with guided power advancement. 4. Calcium/vitamin D supplementation. 5. Targeted PT strengthening. Outcome - pain free with progression and returned to uninhibited training at 12 weeks.

Mechanical performance of welds using ASTM A709 grade 50CR steel as base metal

ASTM A709 50CR is a lean, ferritic stainless steel that is promising for bridge use in highly corrosive environments. However, there is little data available on its performance as a base metal for welds. Consequently, bridge welding specifications do not include it as an approved base metal within their framework. This study presents experimental work done to characterize the performance of welds involving 50CR. The experimental program is informed by established welding procedure specification (WPS) qualification guidelines, but is not limited to the framework required for qualification. Tensile, bend, and impact tests were conducted to determine relevant mechanical properties and evaluate soundness. Macro-etch and micro-etch photographs were taken to visually examine weldments. Yield and tensile strengths of 50CR exceeded 345 MPa (50 ksi) and 485 MPa (70 ksi), respectively. The weld metal exhibited superior strengths to the base metal. Visual inspection of the welds' macrostructures revealed imperfections that should be addressed through the WPSs. Side-bend tests suggested that these imperfections adversely affected ductility.

Reproducibility of nine tests to measure spinal mobility and trunk muscle strength

The reproducibility of nine back function tests suitable for use in the occupational health service was determined in 30 male employees. The correlation of three tests made with a tape measure--forward bending, modified Schober, and side bending--was high in both intra- and inter-observer comparisons (r = 0.82-0.96). Immediate repetition of the testing procedure improved the performance in the forward and side bending tests. The reproducibility was also good for the tests of dynamic (K = 0.57-0.78) and endurance (r = 0.90-0.96) strength of the abdominal muscles and quite good for the test of endurance strength of the back muscles (r = 0.74-0.80). The differences between the examiners must be taken into account in the modified Schober test, and in testing the flexibility of the hip flexors and hamstrings and the endurance strength of the back muscles.

Microstructures and mechanical properties of stainless steel clad plate joint with diverse filler metals

Thick stainless steel clad plate is used widely in the petroleum and petrochemical industries because of its low cost and good corrosion resistance. It is generally welded by the multilayer and multipass welding process with stainless steel filler metal matched with the clad layer. In this research, the base metal of stainless steel clad plates was filled with carbon steel filler metal, and the microstructures and mechanical properties of joints with diverse filler metals were analysed and compared. The results indicate that a local hardening zone (LHZ) forms in the weld filled with the filler metals of stainless steel and carbon steel because of the formation of martensite phase in the first layer of weld with filler metal of carbon steel. The microhardness value in LHZ reaches up to 425 HV1, which is significantly higher than that of the base metal. However, the tensile strength value of joints filled with carbon steel filler metal is equivalent to that of the joints with stainless steel filler metal. The results of the side bending test indicate that the LHZ protrudes from the weld, and the crack occurs near the LHZ if the area of the LHZ on the cross section of joint is larger than 17 % of that of the whole cross section of the joint. The studied results show that it is feasible to use carbon steel filler metal to fill the base metal of carbon steel in welding of stainless steel clad plate.

Intervertebral mobilization for aspecific back pain: effects on posture and pain

Low back pain pain can be defined, according to the most recent evidences, as a bio-psycho-social pathology, but in addition to the mechanical factors other elements that play an important role in the lumbar disability come into play. In fact, during the acute phase pain has a nociceptive and mechanical origin, but over time the influence of psychological and social factors causes the maintenance and chronicization of the pathological process. Mobilization and manipulation therapies are widely used by patients with chronic nonspecific spine pain; however, questions remain around the efficacy, dosing and safety of manual approaches, as well as how these approaches compare to other therapies. The aim of our study project is to try to obtain a reduction in pain and disability by administering vertebral mobilizations with muscle energy techniques (MET) to subjects suffering from this disorder. In the scientific literature there are already studies on the effects of muscle energy techniques on vertebral column mobility and pain. The results were often conflicting, whith some researches confirming the efficacy of the technique in the management of back pain and other researches confutating that. However, the studies carried out are not very precise, both because of the difficulty of applying the technique which requires a thorough knowledge of the vertebral structures, and for the small sample of people who participated in the various projects carried out. Moreover, the major difficulty in the proposed approach appears to be represented by the subjectivity of the approach and the lack of unequivocal results in the literature. The purpose of this study is to use an objective assessment of the postural alignement of the patient, in order to create an objective and repeatable treatment personalized for each patient by a standardized evaluation system. Among the outcome measures, a non-invasive digital system was used for the three-dimensional reconstruction of the spine and the study of its postural alignement. A total of 20 subjects were evaluated before and after the whole protocol for parameters attesting the effect of the treatment on disability, mobility, posture and pain; during a cognitive interview, a personalized anamnestic medical record was compiled and the Oswestry Disability Index scale (ODI ) and the VAS visual analogue scale were administered. Furthermore, the participating subjects were evaluated from the postural point of view and through the use of the 3D B.A.K. Body Analysis Kapture with 4 self calibrated cameras (Diasu Health Technologies, Rome, Italy), a computerized postural analysis that allows the 3D reconstruction of the spine, at the beginning and end of the cycle of therapies. At each session, the subjects were evaluated at the beginning and at the end with the Forward Bending Test and Side Bending Test. From the results of 3D computerized postural analysis B.A.K. the data show that, at the end of the therapeutic protocol, patients reached a harmonious symmetry between the two hemisomes and increase the mobility of the spine. The VAS was, on the whole of the parameters examined, the index most influenced by the applied therapy, reporting a decrease of 70.9%; similar results were also found for the ODI scale score, -68.6%. The results show that the MET can be effective at increasing the range of movement of the spine. We can hypotize that the main explanation for these results can be the application of MET on specific areas of the spine starting from the concept of “greatest somatic dysfunction”. The concomitant decrease in pain and increase of vertebral ROM is another key-point of the study; these results contributed to the improvement of the quality of life of patients who participated to the study. However, further scientific researches are needed for this technique to be validated and used more frequently for painful spinal diseases.

Development of narrow gap multi-layer welding process using oscillation laser beam

The oscillation laser beam is considered to be effective as a heat source of narrow gap multi-layer welding because oscillation laser welding can control the penetration shape and prevent the lack of fusion. In this study, in order to establish a narrow gap welding process by oscillation laser beam, butt welding experiments of 50 mm thickness carbon steel plate were performed. By the appropriate control of the heat input area using the in-process sensor for recognizing the groove shape, narrow gap welding of a thick plate with groove which was cut by gas cutting was achieved. Properties of the welded joint had been confirmed by nondestructive testing, tensile test and side bend test. A two-dimensional numerical calculation model for welding deformation was developed. This calculation model was used for investigation of the optimal groove angle. The results of calculations were in quantitative agreement with the experimental results. Microstructure of the weld zone had multiple thermal histories. According to the hardness test results, maximum hardness of the heat affected zone of the upper layer has been lowered than that of the lower layer.

Investigation on Shearing and Local Formability of Hot-Rolled High-Strength Plates

In order to evaluate the shearing quality, the material inhomogeneity through thickness after shearing is introduced by the authors. This study investigates the shearing and local formability of hot-rolled high-strength steel (HSS) plate, which is generally exploited for the manufacturing of the beam of heavy trucks. Various kinds of plates with different thicknesses and strengths are used to figure out the effect of material properties on the shearing quality. Both the shear surface morphology and microhardness distribution of the sheared edge are considered for evaluating the influence of the sheared-edge quality on local formability during the following forming process. Vickers hardness tests are conducted to analyze the microhardness distribution on the shear surface, which is proved to have significant effect on the local formability of the sheared edge. Furthermore, two kinds of bending tests and simulation are employed to study the edge cracking phenomenon, and the results indicate that the junctional zone of burnished zone and fracture zone, which is defined as peak hardness zone (PHZ), has a significant impact on major strain distribution on shear surface in the side bending test and this region is the main cause of edge cracking in normal bending test.

Intra- and inter-rater reliability of 3D passive intervertebral motion in subjects with nonspecific neck pain assessed by physical therapy students: A pilot study.

Passive Intervertebral Movements (PIVMs) are commonly used to assess and treat patients with nonspecific neck pain. Only very few studies have investigated 3D movements until now. This study assessed intra- and inter-rater reliability of three-dimensional (3D) cervical PIVMs performed by physical therapy students in patients with nonspecific neck pain. Thirty-one patients, mean age 47.2 ± 7.2 years, were independently evaluated by 2 physical therapy students. The raters (A and B) assessed mobility, end-feel and pain provocation performing bilaterally the 3D cervical segmental side-bending test (3D CSSB) from levels C2-C3 to C6-C7. Percentage agreement (raw, positive and negative), Cohen's kappa (95% CI), prevalence index and bias index were calculated to estimate intra- and inter-reliability. Intra-rater reliability showed kappa values ranging between fair and substantial (k 0.29-0.80) for pain provocation, mobility and end-feel, with percentage agreements between 61%-90%. Inter-rater reliability presented kappa values ranging between fair and substantial (k 0.22-0.62) for pain provocation, mobility and end-feel, with percentage agreements between 61% and 80%. Intra-rater reliability of 3D PIVMs was superior to inter-rater reliability in patients with nonspecific neck pain. The most repeatable evaluation parameter was pain. However overall poor reliability suggests avoiding the use of these techniques alone to examine patients and measure their outcome. Further studies are needed to investigate PIVMs reliability in combination with other assessment procedure in symptomatic patients.

Technology of Welding Joints Mixed with Duplex Steel

Results of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.

Mechanical Properties of Welded Joint at Cryogenic Temperature for Manufacturing of ITER TF Coil Structure

The ITER toroidal field (TF) coil structure is a huge welding stainless steel structure with a height of 16 m and a width of 9 m. The TF coil structure has a function to ensure the enormous electromagnetic force, whereas in ITER operation temperature (4 K). FMYJJ1, which is full austenitic stainless steel welding material having high manganese contents, is applied for manufacturing TF coil structure. However, it was reported that some micro cracks were observed on the reheating zone in the thicker welded joint during trials. Low ductility of deposited metal at 1000 °C causes these microcracks. In addition, segregation of sulfur in grain boundary decreased ductility at high temperature. Hence, reducing sulfur content is effective to reduce microcracks. Two types of FMYJJ1 were developed by applying two reducing sulfur content methods. In the previous study, applicability of these improved FMYJJ1 was tested within welded joints having 20-mm thickness. In order to confirm the validity of applicability of them, the Japan Atomic Energy Agency manufactured welded joints with 200-mm thickness, which is the representative thickness of the TF coil structure. When ductility is increased, there is a concern that yield strength is decreased. Hence, confirmation of the mechanical properties is needed. Therefore, side bend test, tensile test, and fracture toughness test at 4 K were performed. As the result, it was confirmed that the crack sensitivity was improved, and it was also confirmed that mechanical properties at 4 K satisfied ITER design requirements.