ASTM A537/A537M:2013 Class 3 Steel: Specifications & Listings
ASTM A537/A537M:2013 Class 3: Class 3: quenched and tempered carbon-manganese-silicon steel pressure vessel plate, up to 150 mm thick. Specified in ASTM A537/A537M:2013.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Mn
P
S
Si
Cu
Ni
Cr
Mo
<=0.24
0.70-1.35
<=0.025
<=0.025
0.15-0.50
<=0.35
<=0.25
<=0.25
<=0.08
Mechanical Properties
Tensile Strength
550-690 MPa
Yield Strength
>=380 MPa
Elongation
>=22%
Condition
Quenched and tempered, thickness 65 mm and under; elongation in 50 mm gauge length
More data from ASTM A537/A537M:2013
From the standard
Yield strength by thickness3 thickness ranges
Thickness (mm)
Yield strength, min (MPa)
up to 65
380
over 65 to 100
345
over 100 to 150
275
Values from Table 2.
Source: ASTM A537/A537M:2013, Table 2
Tensile strength by thickness3 thickness ranges
Thickness (mm)
Tensile strength (MPa)
up to 65
550 to 690
over 65 to 100
515 to 655
over 100 to 150
485 to 620
Source: ASTM A537/A537M:2013, Table 2
Minimum elongation2 ranges
Thickness (mm)
Elongation in 50 mm, min (%)
100 mm and under
22
over 100 mm
20
See Specification A20/A20M for elongation adjustments. No requirement for elongation in 200 mm.
Source: ASTM A537/A537M:2013, Table 2
Heat treatmentdelivery condition
Condition
Quenched and tempered
Tempering temperature
620 deg C minimum (1150 deg F)
Source: ASTM A537/A537M:2013, Section 5
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