ASTM A537 Class 3 steels belong standard ASTM A537/A537M, which is a standard specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese- Silicon Steel.
The maximum thickness of ASTM A537 Class 3 plates furnished under this specification is 4 in. [100 mm] for Class 1 and 6 in. [150 mm] for Class 2 and Class 3.
ASTM A537 Class 3 chemical composition:
|
Grade |
C |
Si |
Mn |
P |
S |
|
0.240 |
0.13-0.55 |
0.64-1.46 |
0.035 |
0.035 |
|
A537 Class 3 |
Cu |
Ni |
Cr |
Mo |
|
|
0.380 |
0.280 |
0.290 |
0.090 |
|
ASTM A537 Class 3 mechanical properties:
|
Grade |
Thickness mm |
Tensile (Mpa) |
Yield (Mpa) min |
Elongation (%) |
|
A537 Class 3 |
8-65 |
550-690 |
380 |
22% |
|
66-100 |
515-655 |
345 |
22% |
|
101-150 |
485-620 |
275 |
20% |
ASTM A537 Class 3 steels shall be manufactured as killed and shall conform to the fine austenitic grain size requirement of Specification A 20/A 20M.
ASTM A537 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] for not less than 1⁄2 h and 1150°F [620°C] for Class 3 plates for not less than 1⁄2 h. In a word, Katalor is a professional supplier in offering ASTM A537 Class 3 steel plates. Feel free to contact me if have needs.
