ASTM A249 TP347H: composition and mechanical properties

ASTM A249/ASME SA249 Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Standard: ASTM A249, ASME SA249

Material: TP347H, S34709

Chemistry Composition

C, % Si, % Mn, % P, % S, % Cr, % Ni, % Nb, % 0.04-0.10 1.00 max 2.00 max 0.045 max 0.030 max 17.0-19.0 9.0-13.0 8*C-1.1

Mechanical Properties

Tensile Strength , MPa Yield Strength, MPa Elongation, % Hardness, HRB 515 min 205 min 35 min 90 max