321 Stainless Steel Quality Control & Testing

1. What is PMI testing for 321? Portable XRF/PMI verifies Cr, Ni, and Ti content for material identification.

2. How to test 321's intergranular corrosion resistance? The Strauss test (boiling nitric acid) evaluates stabilization.

3. What MTC certification is provided for 321? EN 10204 3.1 (third-party) or 3.2 (independent inspection).

4. Are non-destructive tests used for 321? Yes, ultrasonic testing detects internal defects in pipes/sheets.

5. How is 321's tensile strength tested? Per ASTM A370, with samples tested in the annealed state.