Related Material — 69.9% match
based on chemical composition and mechanical property overlap.
ASTM A681 D4 (ASTM A681:2008) and ASTM A681 D2 (ASTM A681:2008) are both steel grades.
Both fall under the Tool & Die Steels category.
ASTM A681 D4 is typically used for tools, dies and fixtures (clause 1.2), while ASTM A681 D2 is commonly used for blanking dies, punches, drawing dies, forming tools.
ASTM A681 D4 is defined under ASTM International, originating from United States, while ASTM A681 D2 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A681 D4 vs ASTM A681 D2 is a 89.3% 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.
Can ASTM A681 D4 Be Substituted With ASTM A681 D2?
ASTM A681 D4 and ASTM A681 D2 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 D4 and ASTM A681 D2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A681 D4 be substituted with ASTM A681 D2?
ASTM A681 D4 and ASTM A681 D2 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.