ASTM A276/A276M:2017 S42010: S42010: martensitic stainless steel bars and shapes (UNS number, no type name printed). Specified in ASTM A276/A276M:2017.
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
Ni
Mo
0.15-0.30
<=1.00
<=0.040
<=0.030
<=1.00
13.5-15.0
0.35-0.85
0.40-0.85
Mechanical Properties
Hardness
<=235 HB
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 size2 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
-
-
-
-
235
A (Annealed)
cold-finished
all
-
-
-
-
255
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
1010 deg C (1850 deg F)
Quenchant
Oil
Hardness after treatment, min
48 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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