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BS 970 EN41C vs IS 1570 (Part 4) 42Cr4Mo2

Close Alternative — 72.9% match based on chemical composition and mechanical property overlap.

BS 970 EN41C (BS 970:1955) and IS 1570 (Part 4) 42Cr4Mo2 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN41C is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 42Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN41C vs IS 1570 (Part 4) 42Cr4Mo2 is a 72.9% 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 72.9%.

Frequently Compared With BS 970 EN41C:
NF A35-565 100C6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
72.9%
MECHANICAL MATCH
No shared data
OVERALL
72.9%
Specifications
Property BS 970 EN41C IS 1570 (Part 4) 42Cr4Mo2
Standard BS 970:1955 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.38–0.48 0.38-0.45
Mn (%) 0.40–0.70 0.60-0.90
Cr (%) 1.40–1.80 0.90-1.20
Al (%) 0.85–1.20 Not specified
Mo (%) 0.20–0.30 0.15-0.30
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.
Mechanical Properties
Property BS 970 EN41C IS 1570 (Part 4) 42Cr4Mo2
Tensile Strength 900–1050 MPa Not specified
Surface Hardness HV ≥950 (nitrided) Not specified
Typical Applications
BS 970 EN41C
Precision nitrided components, gauges
IS 1570 (Part 4) 42Cr4Mo2
Not documented
Key Differences
Can BS 970 EN41C Be Substituted With IS 1570 (Part 4) 42Cr4Mo2?
BS 970 EN41C and IS 1570 (Part 4) 42Cr4Mo2 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.
Forms & Sizes Available on M-EX
BS 970 EN41C
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5300–5700 mm (208.66–224.41 in)
IS 1570 (Part 4) 42Cr4Mo2
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On M-EX Right Now
BS 970 EN41C
3 active listings and RFQs →
IS 1570 (Part 4) 42Cr4Mo2
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Frequently Asked Questions
What is the difference between BS 970 EN41C and IS 1570 (Part 4) 42Cr4Mo2?
BS 970 EN41C specifies Al which is not specified for IS 1570 (Part 4) 42Cr4Mo2. IS 1570 (Part 4) 42Cr4Mo2 specifies Si which is not specified for BS 970 EN41C.
Can BS 970 EN41C be substituted with IS 1570 (Part 4) 42Cr4Mo2?
BS 970 EN41C and IS 1570 (Part 4) 42Cr4Mo2 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.