1. Tensile Test (ISO 4136 / ASTM E8)
Purpose: Determine yield strength, UTS, and elongation.
Specimen: Transverse or all-weld-metal, machined to standard dimensions.
Procedure: Mount the two specimens in a calibrated tensile machine.
Apply load at controlled strain rate until fracture. Record YS, UTS, EL%.
Acceptance: Tensile ≥ minimum specified; fracture location acceptable.
2. Bend Test (ISO 5173 / ASTM E190 /AWS B4.0)
Purpose: Check ductility and weld soundness.
Specimen: Face/root/side bend, edges smoothed.
Procedure: Bend to 180° around specified mandrel.
Inspect tension surface.
Acceptance: No cracks > 3 mm; no open defects.
3. Vickers Hardness Test (ISO 6507 / ASTM E92 / AWS A4.2)
Purpose: Evaluate hardness of WM, HAZ, BM.
Specimen: Polished transverse section; HV10 or HV5 load.
Procedure: Apply load for 10–15 s.
Take impressions across the weld line. Record hardness profile.
Acceptance: Project-specific (e.g., ≤ 250 HV10 for CS).
4. Impact Test – Charpy V (ISO 9016 / ASTM E23)
Purpose: Determine toughness at specified temperature.
Specimen: 10×10×55 mm V-notch, notch at WM/HAZ/BM.
Procedure: Condition to test temperature.
Strike with a pendulum hammer. Record absorbed energy (J).
Acceptance: Meets minimum J values specified.
5. Macro Examination (ISO 17639 / AWS B4.0)
Purpose: Examine weld profile, penetration, fusion.
Specimen: Cross-section, polished and etched (Nital for CS).
Procedure: Etch until weld structure is visible.
Measure throat, penetration, reinforcement. Check for fusion and defects.
Acceptance: No lack of fusion, cracks; dimensions per WPS.
6. Fillet Fracture Test (ISO 9017 / AWS D1.1)
Purpose: Assess internal soundness of fillet weld.
Specimen: T-joint coupon of test fillet size.
Procedure: Fracture via bending or pressing.
Inspect fracture surface.
Acceptance: No cracks, incomplete fusion, large porosity.
7. Ferrite Testing (ISO 8249 / AWS A4.2)
Purpose: Determine ferrite number (FN) in SS welds.
Specimen: Smooth, clean WM surface.
Procedure: Calibrate ferrite scope. Take multiple FN readings.
Acceptance: Austenitic: 3–10 FN; duplex per WPS (typically 30–60%).
8. Chemical Analysis (ASTM E415 / E1086 / Spectroscopy)
Purpose: Confirm chemical composition of BM/WM/filler.
Specimen: Clean, polished area.
Procedure: Perform OES/XRF. Compare elements with grade/wire specification.
Acceptance: Must match specified chemistry limits.
Trust it is clear.
-----------------------------------------------------------------------------------------------------------------------------------------
--Dear Team,
Does anyone have a procedure for mechanical testing, including tensile test, bend test, Vickers hardness test, impact test, macro examination, fillet fracture test, ferrite testing, and chemical analysis?
Thanks & Best Regards
Saleem manhappulath
Mob:+966533595849
WhatsApp:+919526445936
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAMSLg-4Ew3c45rs7PkpDod4NO63AofNPnkWJwAayFKhuUocBkw%40mail.gmail.com.
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CAHo%3DYih3ncdV0Pw-b_NhY8vWca2CkUQPjVV4fSrok9Hm_SVv7Q%40mail.gmail.com.
Comments