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What is the difference between A517 Gr.S and SA517 Gr.S steel plates

1. A517 Gr.S and SA517 Gr.S are the same grade, ASTM A517/A517M is equivalent to ASME SA-517/SA-517M.

2. A517 Gr.S steel plate executive standard: ASTM A517/A517M; SA517 Gr.S steel plate executive technical standard: ASME SA-517/SA-517M.

3. Chemical composition of A517 Gr.S and SA517 Gr.S steel plates:

C Si Mn P S Mo Nb Ti
0.1-0.2 0.15-0.4 1.1-1.5 ≤0.025 ≤0.025 0.1-0.35 ≤0.06 ≤0.06

4. Mechanical properties of A517 Gr.S and SA517 Gr.S steel plates:

Delivery status Thickness Mechanical properties
QT ≤50mm Rp0.2(MPa) ≥690 Or Rt0.5
Rm(MPa) 795-930  
A50(%) ≥16  
Z(%) ≥45 Round sample; rectangular sample: Z≥35%

5. Delivery status of A517 Gr.S and SA517 Gr.S steel plates: quenching and tempering.

6. The main American standard pressure vessel steel plates of BBN steel are ASME/ASTM A202, A203, A204, A285, A299, A302, A387, A515, A516, A517, A533, A537, A612, A662, A841 steel plates, etc.

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