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ASTM A681 S2 vs IS 1570 (Part 6) T55Si7Mo3

Close Alternative — 71.7% match based on chemical composition and mechanical property overlap.

ASTM A681 S2 (ASTM A681:2008) and IS 1570 (Part 6) T55Si7Mo3 (IS 1570 (Part 6):1996) are both steel grades. Both fall under the Tool & Die Steels category. ASTM A681 S2 is defined under ASTM International, originating from United States, while IS 1570 (Part 6) T55Si7Mo3 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, ASTM A681 S2 vs IS 1570 (Part 6) T55Si7Mo3 is a 71.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 71.7%.

Frequently Compared With ASTM A681 S2:
EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV1 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 118T3 IS 1570 (Part 6) 133T3 GOST 5950 3H2W8F GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS
Match Breakdown
CHEMISTRY MATCH
71.7%
MECHANICAL MATCH
No shared data
OVERALL
71.7%
Specifications
Property ASTM A681 S2 IS 1570 (Part 6) T55Si7Mo3
Standard ASTM A681:2008 IS 1570 (Part 6):1996
Category Tool & Die Steels Tool & Die Steels
C (%) 0.40-0.55 0.50-0.60
Mn (%) 0.30-0.50 0.80-1.00
P (%) <=0.030 <=0.035
S (%) <=0.030 <=0.035
Si (%) 0.90-1.20 1.50-2.00
V (%) <=0.50 0.12-0.20 (optional)
Mo (%) 0.30-0.60 0.25-0.40
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 S2 IS 1570 (Part 6) T55Si7Mo3
Hardness <=217 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Typical Applications
ASTM A681 S2
Tools, dies and fixtures (clause 1.2)
IS 1570 (Part 6) T55Si7Mo3
Not documented
Can ASTM A681 S2 Be Substituted With IS 1570 (Part 6) T55Si7Mo3?
ASTM A681 S2 and IS 1570 (Part 6) T55Si7Mo3 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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ASTM A681 S2
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IS 1570 (Part 6) T55Si7Mo3
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Frequently Asked Questions
What is the difference between ASTM A681 S2 and IS 1570 (Part 6) T55Si7Mo3?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A681 S2 be substituted with IS 1570 (Part 6) T55Si7Mo3?
ASTM A681 S2 and IS 1570 (Part 6) T55Si7Mo3 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.