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
Cr
<=0.15
<=1.00
<=0.040
<=0.030
<=0.50
11.5-13.0
Mechanical Properties
Tensile Strength
>=480 MPa
Yield Strength
>=275 MPa
Elongation
>=20%
Condition
Condition A (Annealed), hot-finished, all sizes (first row printed)
More data from ASTM A276/A276M:2017
From the standard
Mechanical requirements by condition and size6 row(s)
Condition
Finish
Diameter or thickness, in. [mm]
Tensile strength, min (MPa)
Yield strength, min (MPa)
Elongation, min (%)
Reduction of area, min (%)
Brinell HBW, max
A (Annealed)
hot-finished
all
480
275
20
45
-
A (Annealed)
cold-finished
all
480
275
16
45
-
T (Hardened and tempered, higher temperature)
hot-finished
all
690
550
15
45
-
T (Hardened and tempered, higher temperature)
cold-finished
all
690
550
12
40
-
H (Hardened and tempered, lower temperature)
hot-finished
all
830
620
12
40
-
H (Hardened and tempered, lower temperature)
cold-finished
all (rounds only)
830
620
12
40
-
Yield by the 0.2 percent offset method. Hardness is HBW unless otherwise indicated; equivalent Rockwell is permitted.
Source: ASTM A276/A276M:2017, Table 2
Response to heat treatment3 values
Heat treatment temperature, min
955 deg C (1750 deg F)
Quenchant
Air
Hardness after treatment, min
35 HRC
Test sample section not over 3/8 in. [9.50 mm] thick; temperature tolerance +/-14 deg C.
Source: ASTM A276/A276M:2017, Table 3
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