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IS 11169 (Part 1) 40Cr4 vs BS 970 (Part 1) 637H17

Related Material — 66.4% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 40Cr4 (IS 11169 (Part 1):2022) and BS 970 (Part 1) 637H17 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 40Cr4 is typically used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c), while BS 970 (Part 1) 637H17 is commonly used for case hardening steel (section four). IS 11169 (Part 1) 40Cr4 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 637H17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 40Cr4 vs BS 970 (Part 1) 637H17 is a 66.4% 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 66.4%.

Frequently Compared With IS 11169 (Part 1) 40Cr4:
IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
66.4%
MECHANICAL MATCH
No shared data
OVERALL
66.4%
Specifications
Property IS 11169 (Part 1) 40Cr4 BS 970 (Part 1) 637H17
Standard IS 11169 (Part 1):2022 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.14-0.20
Cr (%) 0.90-1.20 0.60-1.00
Cu (%) <=0.15 Not specified
Mn (%) 0.60-0.90 0.60-0.90
Mo (%) <=0.05 Not specified
Ni (%) <=0.15 0.85-1.25
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Si (%) 0.10-0.35 Not specified
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 11169 (Part 1) 40Cr4 BS 970 (Part 1) 637H17
Core Hardness (CH) >=50 HRC up to 16 mm Not specified
Tensile Strength, annealed (+AC) <=620 MPa (over 5 to 40 mm) Not specified
Typical Applications
IS 11169 (Part 1) 40Cr4
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
BS 970 (Part 1) 637H17
Case hardening steel (section four)
Key Differences
Can IS 11169 (Part 1) 40Cr4 Be Substituted With BS 970 (Part 1) 637H17?
IS 11169 (Part 1) 40Cr4 and BS 970 (Part 1) 637H17 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
IS 11169 (Part 1) 40Cr4
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BS 970 (Part 1) 637H17
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 40Cr4 and BS 970 (Part 1) 637H17?
IS 11169 (Part 1) 40Cr4 specifies Cu, Mo, P, S which are not specified for BS 970 (Part 1) 637H17.
Can IS 11169 (Part 1) 40Cr4 be substituted with BS 970 (Part 1) 637H17?
IS 11169 (Part 1) 40Cr4 and BS 970 (Part 1) 637H17 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.