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ASTM A681 A10 vs IS 1570 (Part 4) 20Ni7Mo2

Related Material — 65% match based on chemical composition and mechanical property overlap.

ASTM A681 A10 (ASTM A681:2008) and IS 1570 (Part 4) 20Ni7Mo2 (IS 1570 (Part 4):1988) are both steel grades. ASTM A681 A10 is classified under Tool & Die Steels, while IS 1570 (Part 4) 20Ni7Mo2 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. ASTM A681 A10 is defined under ASTM International, originating from United States, while IS 1570 (Part 4) 20Ni7Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ASTM A681 A10 vs IS 1570 (Part 4) 20Ni7Mo2 is a 68.4% 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 65%.

Frequently Compared With ASTM A681 A10:
GOST 5950 4H5MFS1 GOST 5950 3H2W8F DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 133T3 GB/T 1299 4Cr5MoSiV1 EN ISO 4957 1.2316 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
68.4%
MECHANICAL MATCH
No shared data
OVERALL
65%
Specifications
Property ASTM A681 A10 IS 1570 (Part 4) 20Ni7Mo2
Standard ASTM A681:2008 IS 1570 (Part 4):1988
Category Tool & Die Steels Alloy Steel
C (%) 1.25-1.50 0.17-0.22
Mn (%) 1.60-2.10 0.45-0.65
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Si (%) 1.00-1.50 0.15-0.35
Mo (%) 1.25-1.75 0.20-0.30
Ni (%) 1.55-2.05 1.65-2.00
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 A10 IS 1570 (Part 4) 20Ni7Mo2
Hardness <=269 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Typical Applications
ASTM A681 A10
Tools, dies and fixtures (clause 1.2)
IS 1570 (Part 4) 20Ni7Mo2
Not documented
Key Differences
Can ASTM A681 A10 Be Substituted With IS 1570 (Part 4) 20Ni7Mo2?
ASTM A681 A10 and IS 1570 (Part 4) 20Ni7Mo2 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.
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ASTM A681 A10
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Frequently Asked Questions
What is the difference between ASTM A681 A10 and IS 1570 (Part 4) 20Ni7Mo2?
Different category: ASTM A681 A10 is Tool & Die Steels, IS 1570 (Part 4) 20Ni7Mo2 is Alloy Steel. ASTM A681 A10 specifies P, S which are not specified for IS 1570 (Part 4) 20Ni7Mo2.
Can ASTM A681 A10 be substituted with IS 1570 (Part 4) 20Ni7Mo2?
ASTM A681 A10 and IS 1570 (Part 4) 20Ni7Mo2 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.