ASTM A 312 Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

Grade: TP304H

UNS Designation: S30409

Chemical Requirements(%)

C: 0.04-0.10

Mn: ≤2.00

P: ≤0.045

S: ≤0.030

Si: ≤1.00

Cr: 18.0-20.0

Ni: 8.0-11.0

Heat Treating Temperature

Solution, ≥1040 °C

Tensile Requirements

Tensile Strength, ≥515Mpa

Yield Strength, ≥205MPa

Elongation in 2 in. or 50 mm (or 4D) (%),

Longitudinal, ≥35

Transverse, ≥25