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IS 1570 (Part 4) 35Mn6Mo3 vs IS 1570 (Part 4) 35Mn6Mo4

Strong Match — 86% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 35Mn6Mo3 (IS 1570 (Part 4):1988) and IS 1570 (Part 4) 35Mn6Mo4 (IS 1570 (Part 4):1988) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 35Mn6Mo3 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 4) 35Mn6Mo4 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 1570 (Part 4) 35Mn6Mo3 vs IS 1570 (Part 4) 35Mn6Mo4 is a 91.4% match. As per mechanical properties, the match is 75%. Combined, this makes them a strong match overall at 86%.

Frequently Compared With IS 1570 (Part 4) 35Mn6Mo3:
NF A35-565 100C6 IS 1570 (Part 7) 12Cr4Mo5H UNI 11234 100Cr6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 GB/T 3077 12Cr2Ni4A IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
91.4%
MECHANICAL MATCH
75%
OVERALL
86%
Specifications
Property IS 1570 (Part 4) 35Mn6Mo3 IS 1570 (Part 4) 35Mn6Mo4
Standard IS 1570 (Part 4):1988 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.30-0.40 0.30-0.40
Si (%) 0.10-0.35 0.10-0.35
Mn (%) 1.30-1.80 1.30-1.80
Mo (%) 0.20-0.35 0.35-0.55
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property IS 1570 (Part 4) 35Mn6Mo3 IS 1570 (Part 4) 35Mn6Mo4
Tensile Strength 990-1140 MPa 990-1140 MPa
Yield Strength >=750 MPa (0.2 % proof stress) >=750 MPa (0.2 % proof stress)
Elongation >=10% >=13%
Izod Impact >=48 J >=48 J
Hardness 285-341 HBS (guidance only) 285-341 HBS (guidance only)
Condition Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 30 mm Bars and forgings, hardened and tempered (oil hardened unless stated), limiting ruling section 63 mm
Can IS 1570 (Part 4) 35Mn6Mo3 Be Substituted With IS 1570 (Part 4) 35Mn6Mo4?
IS 1570 (Part 4) 35Mn6Mo3 and IS 1570 (Part 4) 35Mn6Mo4 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 35Mn6Mo4 is often considered as a substitute for IS 1570 (Part 4) 35Mn6Mo3 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 1570 (Part 4) 35Mn6Mo3
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IS 1570 (Part 4) 35Mn6Mo4
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 35Mn6Mo3 and IS 1570 (Part 4) 35Mn6Mo4?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 1570 (Part 4) 35Mn6Mo3 be substituted with IS 1570 (Part 4) 35Mn6Mo4?
IS 1570 (Part 4) 35Mn6Mo3 and IS 1570 (Part 4) 35Mn6Mo4 overlap closely enough on chemistry and mechanical properties that IS 1570 (Part 4) 35Mn6Mo4 is often considered as a substitute for IS 1570 (Part 4) 35Mn6Mo3 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.