ASTM A537/A537M:2013 Class 1 Steel: Specifications & Listings
ASTM A537/A537M:2013 Class 1: Class 1: normalized carbon-manganese-silicon steel pressure vessel plate, up to 100 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
485-620 MPa
Yield Strength
>=345 MPa
Elongation
>=22%
Condition
Normalized, thickness 65 mm and under; elongation in 50 mm gauge length
More data from ASTM A537/A537M:2013
From the standard
Yield strength by thickness2 thickness ranges
Thickness (mm)
Yield strength, min (MPa)
up to 65
345
over 65 to 100
310
Values from Table 2.
Source: ASTM A537/A537M:2013, Table 2
Tensile strength by thickness2 thickness ranges
Thickness (mm)
Tensile strength (MPa)
up to 65
485 to 620
over 65 to 100
450 to 585
Source: ASTM A537/A537M:2013, Table 2
Minimum elongation1 range
Thickness (mm)
Elongation in 50 mm, min (%)
100 mm and under
22
See Specification A20/A20M for elongation adjustments. Elongation in 200 mm, min 18 percent.
Source: ASTM A537/A537M:2013, Table 2
Heat treatmentdelivery condition
Condition
Normalized
Source: ASTM A537/A537M:2013, Section 5
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