Categories
- Pipe & Tube (18)
- Flange & Fitting (97)
- Fastener & Gasket (12)
- Valve & Pump (18)
- Base Material (10)
- Equipment (7)
- Application (25)
- Technical (108)
ASTM A537/ A537, is the standard specification covers heat-treated carbon-manganese-silicon steel plates. Carbon steel plates made in accordance with ASTM A537 are primarily intended for fusion welded pressure vessels and structures.
Steel plates under this specification are available in three classes classified according to the different heat treatment: Class 1 (normalized), Class 2 (quenched and tempered) and Class 3 (quenched and tempered). The maximum thickness of plates furnished under this specification is 4 in. [100mm] for Class 1 and 6 in. [150mm] for Class 2 and Class 3.
ASTM A537 Heat-Treated Plates | ||
---|---|---|
Element | Composition | |
C | max | 0.24 |
Mn | *H.A. t≤1-1/2" | 0.70-1.35 |
*P.A. t≤1-1/2" | 0.64-1.46 | |
*H.A. t>1-1/2" | 1.00-1.60 | |
*P.A. t>1-1/2" | 0.92-1.72 | |
P | max | 0.025 |
S | max | 0.025 |
Si | *H.A. | 0.15–0.50 |
*P.A. | 0.13–0.55 | |
Cu | *H.A. max | 0.35 |
*P.A. max | 0.38 | |
Ni | *H.A. max | 0.25 |
*P.A. max | 0.28 | |
Cr | *H.A. max | 0.25 |
*P.A. max | 0.29 | |
Mo | *H.A. max | 0.08 |
*P.A. max | 0.09 |
ASTM A537 | Class 1 | Class 2 | Class 3 | |
---|---|---|---|---|
*T.S. ksi [MPa] | t≤2-1/2" | 70-90 [485-620] | 80-100 [550-690] | 80-100 [550-690] |
2-1/2"<t≤4" | 65-85 [450-585] | 75-95 [515-655] | 75-95 [515-655] |
|
4"<t≤6" | A | 70-90 [485-620] | 70-90 [485-620] |
|
*Y.S. ksi [MPa] | t≤2-1/2" | ≥50 [≥345] | ≥60 [≥415] | ≥55 [≥380] |
2-1/2"<t≤4" | ≥45 [≥310] | ≥55 [≥380] | ≥50 [≥345] |
|
4"<t≤6" | A | ≥46 [≥315] | ≥40 [≥275] |
|
*EL. 2" min. % | 2" | - | - | - |
4"≤t<2" | 22 | 22 | 22 | |
t>4" | A | 20 | 20 | |
*EL. 8" min. % | [200mm] | 18 | C | C |
The ASTM A537 steel shall be killed and conform to the fine austenitic grain size requirement of specification ASTM A20/ A20M. The ASTM A537 heat-treated plates Class 1 shall be normalized. Class 2 and Class 3 plates shall be quenched and tempered. The tempering temperature for Class 2 plates shall not be less than 1100°F [595°C] and not less than 1150°F [620°C] for Class 3 plates.
The inspection and testing required for ASTM A537 steel plates include: chemical analysis, tension test, Charpy V-Notch impact test, drop weight test, high-temperature tension test, ultrasonic examination, as well as magnetic particle examination.