Close Alternative — 78.6% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S31700 (ASTM A240/A240M:2025) and ASTM A959 316Cb (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S31700 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 316Cb is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
ASTM A240/A240M S31700 is defined under ASTM International, originating from United States, while ASTM A959 316Cb is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A240/A240M S31700 vs ASTM A959 316Cb is a 78.6% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 78.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A240/A240M S31700
ASTM A959 316Cb
Tensile Strength
>=515 MPa
Not specified
Yield Strength
>=205 MPa
Not specified
Elongation
>=35%
Not specified
Hardness
<=217 HB
Not specified
Condition
Plate, sheet and strip; yield by 0.2 percent offset
Not specified
Typical Applications
ASTM A240/A240M S31700
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 316Cb
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A240/A240M S31700 Be Substituted With ASTM A959 316Cb?
ASTM A240/A240M S31700 and ASTM A959 316Cb are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between ASTM A240/A240M S31700 and ASTM A959 316Cb?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S31700 be substituted with ASTM A959 316Cb?
ASTM A240/A240M S31700 and ASTM A959 316Cb are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.