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BS 970 (Part 1) 709A40 vs IS 1570 (Part 4) 103Cr4

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 709A40 (BS 970 (Part 1):1983) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 709A40 is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 709A40 vs IS 1570 (Part 4) 103Cr4 is a 70% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 1) 709A40:
NF A35-565 100C6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
70%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 (Part 1) 709A40 IS 1570 (Part 4) 103Cr4
Standard BS 970 (Part 1):1983 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.38-0.43 0.95-1.10
Mn (%) 0.75-1.00 0.25-0.45
Cr (%) 0.90-1.20 0.90-1.20
Mo (%) 0.25-0.35 Not specified
P (%) <=0.035 Not specified
S (%) <=0.040 Not specified
Si (%) Not specified 0.10-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 1) 709A40
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can BS 970 (Part 1) 709A40 Be Substituted With IS 1570 (Part 4) 103Cr4?
BS 970 (Part 1) 709A40 and IS 1570 (Part 4) 103Cr4 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.
On M-EX Right Now
BS 970 (Part 1) 709A40
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IS 1570 (Part 4) 103Cr4
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 709A40 and IS 1570 (Part 4) 103Cr4?
BS 970 (Part 1) 709A40 specifies Mo, P, S which are not specified for IS 1570 (Part 4) 103Cr4. IS 1570 (Part 4) 103Cr4 specifies Si which is not specified for BS 970 (Part 1) 709A40.
Can BS 970 (Part 1) 709A40 be substituted with IS 1570 (Part 4) 103Cr4?
BS 970 (Part 1) 709A40 and IS 1570 (Part 4) 103Cr4 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.