SA738 GrB steel plate chemical composition and mechanical properties

SA738 GrB steel plate fulfill ASME SA738/SA738M specification.

Heat treatment of SA738 GrB steel plate: for heat treatment of quenching + tempering, the minimum tempering temperature of SA738 GrB steel plate should be 595℃.

SA738 GrB steel plate is a heat-treated carbon-manganese-silicon steel plate for medium and low temperature pressure vessels.

Chemical composition of SA738 GrB steel plate:
C:≤0.2
Mn: 0.90-1.50
P: ≤0.025
S:≤0.025
Si: 0.15-0.55
Cu: ≤0.35
Ni: ≤0.60
Cr:≤0.30
Mo: ≤0.30
V: ≤0.07
Nb: ≤0.04

Mechanical properties of SA738 GrB steel plate
Yield strength: ≥415
Tensile Strength: 585-705
Elongation%: ≥20

SA738 GrB steel plate steelmaking process: The steel should be killed steel and should meet the requirements of fine austenite grain size in the A20/A20M specification.