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» Base Material » ASTM A537 Heat-Treated Plates

ASTM A537 Heat-Treated Plates

December 12, 2019

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.

ASTM A537 Class 1 Heat-Treated plates

ASTM A537 Class 1 plates.

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.

Chemical Composition Requirements

ASTM A537 Heat-Treated Plates
ElementComposition
Cmax0.24
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
Pmax0.025
Smax0.025
Si*H.A.0.15–0.50
*P.A.0.13–0.55
Cu*H.A. max0.35
*P.A. max0.38
Ni*H.A. max0.25
*P.A. max0.28
Cr*H.A. max0.25
*P.A. max0.29
Mo*H.A. max0.08
*P.A. max0.09
*t: plate thickness; *H.A.: heat analysis; *P.A.: product analysis; unit: %.
*CE = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15.

Mechanical Properties

ASTM A537Class 1Class 2Class 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"A70-90
[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"222222
t>4"A2020
*EL. 8"
min. %
[200mm]18CC
*T.S.: tensile strength; *Y.S.: yield strength; *EL. 8″: elongation in 8″; *EL. 2″: elongation in 2″; *A: Product is not available in this size range; *C: There is no requirement for elongation in 8 in.

Manufacture, Heat Treatment & Testing

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.

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