ASTM A 285 gr.A, A 285 gr.B, A 285 gr.C is a series of boilers and pressure vessel steel. Compare to A 285 gr.A, A 285 gr.B, A 285 gr.C, the most important difference is their carbon content.
ASTM A 285 gr.A, A 285 gr.B, A 285 gr.C chemical composition :
|
Grade |
C (max) |
Si (max) |
Mn |
P (max) |
S (max) |
|
A 285 gr.A |
0.17 |
- |
0.9 |
0.035 |
0.035 |
|
A 285 gr.B |
0.22 |
- |
0.9 |
0.035 |
0.035 |
|
A 285 gr.C |
0.28 |
- |
0.9 |
0.035 |
0.035 |
ASTM A 285 gr.A, A 285 gr.B, A 285 gr.C mechanical properties :
|
Grade |
Tensile strength Rm for product thickness in mm |
Upper yield stress ReH for product thickness in mm |
Elongation after fracture |
|
A 285 gr.A |
310-415 |
165 |
27/30 |
|
A 285 gr.B |
345-485 |
185 |
25/28 |
|
A 285 gr.C |
380-515 |
205 |
23/27 |
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