Related Material — 67.5% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S33426 (ASTM A240/A240M:2025) and BS 970 (Part 3) 316S11 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S33426 is typically used for pressure vessels and general applications (plate, sheet and strip), while BS 970 (Part 3) 316S11 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (table 18).
ASTM A240/A240M S33426 is defined under ASTM International, originating from United States, while BS 970 (Part 3) 316S11 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, ASTM A240/A240M S33426 vs BS 970 (Part 3) 316S11 is a 67.5% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a related material overall at 67.5%.
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 S33426
BS 970 (Part 3) 316S11
Tensile Strength
>=515 MPa
Not specified
Yield Strength
>=205 MPa
Not specified
Elongation
>=30%
Not specified
Hardness
<=217 HB
Not specified
Condition
t <= 0.12 in. [3 mm] (first condition printed); yield by 0.2 percent offset
Not specified
Typical Applications
ASTM A240/A240M S33426
Pressure vessels and general applications (plate, sheet and strip)
BS 970 (Part 3) 316S11
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (Table 18)
Can ASTM A240/A240M S33426 Be Substituted With BS 970 (Part 3) 316S11?
ASTM A240/A240M S33426 and BS 970 (Part 3) 316S11 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between ASTM A240/A240M S33426 and BS 970 (Part 3) 316S11?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S33426 be substituted with BS 970 (Part 3) 316S11?
ASTM A240/A240M S33426 and BS 970 (Part 3) 316S11 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.