Related Material — 69.9% match
based on chemical composition and mechanical property overlap.
ASTM A681 S6 (ASTM A681:2008) and ASTM A681 S7 (ASTM A681:2008) are both steel grades.
Both fall under the Tool & Die Steels category.
ASTM A681 S6 is typically used for tools, dies and fixtures (clause 1.2), while ASTM A681 S7 is commonly used for tools, dies and fixtures (clause 1.2).
ASTM A681 S6 is defined under ASTM International, originating from United States, while ASTM A681 S7 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A681 S6 vs ASTM A681 S7 is a 64.2% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a related material overall at 69.9%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A681 S6
ASTM A681 S7
Hardness
<=229 HB
<=229 HB
Condition
Annealed (maximum Brinell hardness)
Annealed (maximum Brinell hardness)
Typical Applications
ASTM A681 S6
Tools, dies and fixtures (clause 1.2)
ASTM A681 S7
Tools, dies and fixtures (clause 1.2)
Can ASTM A681 S6 Be Substituted With ASTM A681 S7?
ASTM A681 S6 and ASTM A681 S7 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 A681 S6 and ASTM A681 S7?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A681 S6 be substituted with ASTM A681 S7?
ASTM A681 S6 and ASTM A681 S7 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.