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IS 11169 (Part 1) 40Ni4 vs BS 970 (Part 3) 655M13

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 40Ni4 (IS 11169 (Part 1):2022) and BS 970 (Part 3) 655M13 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 40Ni4 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 3) 655M13 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). IS 11169 (Part 1) 40Ni4 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 655M13 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 11169 (Part 1) 40Ni4 vs BS 970 (Part 3) 655M13 is a 70.3% 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%.

Frequently Compared With IS 11169 (Part 1) 40Ni4:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
70.3%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property IS 11169 (Part 1) 40Ni4 BS 970 (Part 3) 655M13
Standard IS 11169 (Part 1):2022 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.10-0.16
Cr (%) <=0.30 0.70-1.00
Cu (%) <=0.15 Not specified
Mn (%) 0.50-0.80 0.35-0.60
Mo (%) <=0.05 Not specified
Ni (%) 3.20-3.60 3.00-3.75
P (%) <=0.035 <=0.04
S (%) <=0.035 <=0.05
Si (%) 0.10-0.35 0.10-0.40
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 11169 (Part 1) 40Ni4 BS 970 (Part 3) 655M13
Hardness, annealed (+AC) <=190 HBW Not specified
Typical Applications
IS 11169 (Part 1) 40Ni4
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 3) 655M13
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Key Differences
Can IS 11169 (Part 1) 40Ni4 Be Substituted With BS 970 (Part 3) 655M13?
IS 11169 (Part 1) 40Ni4 and BS 970 (Part 3) 655M13 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) 40Ni4
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BS 970 (Part 3) 655M13
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 40Ni4 and BS 970 (Part 3) 655M13?
IS 11169 (Part 1) 40Ni4 specifies Cu, Mo which are not specified for BS 970 (Part 3) 655M13.
Can IS 11169 (Part 1) 40Ni4 be substituted with BS 970 (Part 3) 655M13?
IS 11169 (Part 1) 40Ni4 and BS 970 (Part 3) 655M13 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.