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BS 970 (Part 3) 708M40 vs IS 11169 (Part 1) 12Cr4Mo2

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

BS 970 (Part 3) 708M40 (BS 970 (Part 3):1991) and IS 11169 (Part 1) 12Cr4Mo2 (IS 11169 (Part 1):2022) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 708M40 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16), while IS 11169 (Part 1) 12Cr4Mo2 is commonly used for cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex b). BS 970 (Part 3) 708M40 is defined under British Standards (BS), originating from United Kingdom, while IS 11169 (Part 1) 12Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 3) 708M40 vs IS 11169 (Part 1) 12Cr4Mo2 is a 81.5% 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 BS 970 (Part 3) 708M40:
IS 1570 (Part 4) 103Cr6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
81.5%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 (Part 3) 708M40 IS 11169 (Part 1) 12Cr4Mo2
Standard BS 970 (Part 3):1991 IS 11169 (Part 1):2022
Category Alloy Steel Alloy Steel
C (%) 0.36-0.44 0.10-0.15
Si (%) 0.10-0.40 <=0.30
Mn (%) 0.70-1.00 0.60-0.90
P (%) <=0.035 <=0.025
S (%) <=0.040 <=0.025
Cr (%) 0.90-1.20 0.90-1.20
Mo (%) 0.15-0.25 0.15-0.25
Cu (%) Not specified <=0.25
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 3) 708M40 IS 11169 (Part 1) 12Cr4Mo2
Hardness, ferrite-pearlite (+FP) Not specified 135-185 HB
Tensile Strength, annealed (+AC) Not specified <=500 MPa (over 5 to 40 mm)
Typical Applications
BS 970 (Part 3) 708M40
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
IS 11169 (Part 1) 12Cr4Mo2
Cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
Key Differences
Can BS 970 (Part 3) 708M40 Be Substituted With IS 11169 (Part 1) 12Cr4Mo2?
BS 970 (Part 3) 708M40 and IS 11169 (Part 1) 12Cr4Mo2 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 3) 708M40
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IS 11169 (Part 1) 12Cr4Mo2
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 708M40 and IS 11169 (Part 1) 12Cr4Mo2?
IS 11169 (Part 1) 12Cr4Mo2 specifies Cu which is not specified for BS 970 (Part 3) 708M40.
Can BS 970 (Part 3) 708M40 be substituted with IS 11169 (Part 1) 12Cr4Mo2?
BS 970 (Part 3) 708M40 and IS 11169 (Part 1) 12Cr4Mo2 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.