Related Material — 69.9% match
based on chemical composition and mechanical property overlap.
ASTM A681 P3 (ASTM A681:2008) and IS 1570 (Part 6) T55Ni6Cr3 (IS 1570 (Part 6):1996) are both steel grades.
Both fall under the Tool & Die Steels category.
ASTM A681 P3 is defined under ASTM International, originating from United States, while IS 1570 (Part 6) T55Ni6Cr3 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, ASTM A681 P3 vs IS 1570 (Part 6) T55Ni6Cr3 is a 76.6% 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 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 P3
IS 1570 (Part 6) T55Ni6Cr3
Hardness
<=143 HB
Not specified
Condition
Annealed (maximum Brinell hardness)
Not specified
Typical Applications
ASTM A681 P3
Tools, dies and fixtures (clause 1.2)
IS 1570 (Part 6) T55Ni6Cr3
Not documented
Can ASTM A681 P3 Be Substituted With IS 1570 (Part 6) T55Ni6Cr3?
ASTM A681 P3 and IS 1570 (Part 6) T55Ni6Cr3 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 P3 and IS 1570 (Part 6) T55Ni6Cr3?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A681 P3 be substituted with IS 1570 (Part 6) T55Ni6Cr3?
ASTM A681 P3 and IS 1570 (Part 6) T55Ni6Cr3 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.