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IS 11169 (Part 1) 40Cr4Mo3 vs IS 1570 (Part 4) 42Cr4Mo2

Strong Match — 90.3% match based on chemical composition and mechanical property overlap.

IS 11169 (Part 1) 40Cr4Mo3 (IS 11169 (Part 1):1984) and IS 1570 (Part 4) 42Cr4Mo2 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. IS 11169 (Part 1) 40Cr4Mo3 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 4) 42Cr4Mo2 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 11169 (Part 1) 40Cr4Mo3 vs IS 1570 (Part 4) 42Cr4Mo2 is a 90.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 90.3%.

Frequently Compared With IS 11169 (Part 1) 40Cr4Mo3:
IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 NF A35-565 100C6
Match Breakdown
CHEMISTRY MATCH
90.3%
MECHANICAL MATCH
No shared data
OVERALL
90.3%
Specifications
Property IS 11169 (Part 1) 40Cr4Mo3 IS 1570 (Part 4) 42Cr4Mo2
Standard IS 11169 (Part 1):1984 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.38-0.45
Mn (%) 0.50-0.80 0.60-0.90
Si (%) 0.10-0.35 0.10-0.35
Cr (%) 0.90-1.20 0.90-1.20
Mo (%) 0.20-0.35 0.15-0.30
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) 40Cr4Mo3 IS 1570 (Part 4) 42Cr4Mo2
Tensile Strength (hardened and tempered) 1100-1300 MPa (16 mm) / 1000-1200 MPa (40 mm) / 900-1100 MPa (100 mm) Not specified
0.2% Proof Stress >=900 MPa (16 mm) / >=750 MPa (40 mm) / >=700 MPa (100 mm) Not specified
Elongation >=10% (16 mm) / >=11% (40 mm) / >=12% (100 mm) Not specified
Hardness, annealed <=200 HB Not specified
Typical Applications
IS 11169 (Part 1) 40Cr4Mo3
Cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
IS 1570 (Part 4) 42Cr4Mo2
Not documented
Can IS 11169 (Part 1) 40Cr4Mo3 Be Substituted With IS 1570 (Part 4) 42Cr4Mo2?
IS 11169 (Part 1) 40Cr4Mo3 and IS 1570 (Part 4) 42Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 42Cr4Mo2 is often considered as a substitute for IS 11169 (Part 1) 40Cr4Mo3 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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IS 11169 (Part 1) 40Cr4Mo3
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IS 1570 (Part 4) 42Cr4Mo2
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Frequently Asked Questions
What is the difference between IS 11169 (Part 1) 40Cr4Mo3 and IS 1570 (Part 4) 42Cr4Mo2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 11169 (Part 1) 40Cr4Mo3 be substituted with IS 1570 (Part 4) 42Cr4Mo2?
IS 11169 (Part 1) 40Cr4Mo3 and IS 1570 (Part 4) 42Cr4Mo2 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 42Cr4Mo2 is often considered as a substitute for IS 11169 (Part 1) 40Cr4Mo3 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.