Mechanical properties of SA515 Gr70 steel plate

SA515 Gr70 is an austenitic coarse grain steel for ASME pressure vessels, mainly used for manufacturing medium and high temperature welding boilers and pressure vessels.

Delivery status of SA515 Gr70 steel plate: hot-rolled, normalized, and the specific delivery status shall be indicated in the MTC.

SA515 Gr70 steel plate executive standard: ASME SA515/SA515M

Chemical composition of SA515 Gr70 steel plate:
C ≤0.33, Si 0.15~0.4, Mn ≤1.2, P ≤0.025, S ≤0.025, Ni ≤0.4, Cr ≤0.3
Mo ≤0.12, Cu ≤0.4, Nb ≤0.02, V ≤0.03, Ti ≤0.03, Alt ≥0.02, B ≤0.001
Remarks on ingredients: for every 0.01 decrease in maximum C, the maximum allowable Mn increases by 0.06 to 1.5; Cr+Ni+Mo+Cu≤0.03; Cr+Mo≤0.32; Alt can be replaced by Als, where Als ≥ 0.015.

Mechanical properties of SA515 Gr70 steel plate:
SA515 Gr70 plate>12.5-25mm, Rp0.2 (MPa) ≥ 260, Rm (MPa) 485-620, A200 (%) ≥ 17, A50 ≥ 21%
SA515 Gr.70 plate >25-50mm, Rp0.2 (MPa) ≥260, Rm (MPa) 485-620, A200(%)≥17, A50≥21%

Application scope of SA515 Gr70 steel plate:
SA515 Gr70 steel plate can be used to manufacture welded boilers and pressure vessels at medium and normal temperatures.