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IS 1570 (Part 4) 20Ni7Mo2 vs IS 4432 20Ni7Mo2-S

Strong Match — 96% match based on chemical composition and mechanical property overlap.

IS 1570 (Part 4) 20Ni7Mo2 (IS 1570 (Part 4):1988) and IS 4432 20Ni7Mo2-S (IS 4432:1988) are both steel grades. Both fall under the Alloy Steel category. IS 1570 (Part 4) 20Ni7Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while IS 4432 20Ni7Mo2-S is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 1570 (Part 4) 20Ni7Mo2 vs IS 4432 20Ni7Mo2-S is a 96% 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 96%.

Frequently Compared With IS 1570 (Part 4) 20Ni7Mo2:
IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 7) 12Cr4Mo5H UNI 11234 100Cr6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
96%
MECHANICAL MATCH
No shared data
OVERALL
96%
Specifications
Property IS 1570 (Part 4) 20Ni7Mo2 IS 4432 20Ni7Mo2-S
Standard IS 1570 (Part 4):1988 IS 4432:1988
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.17-0.22
Si (%) 0.15-0.35 0.15-0.35
Mn (%) 0.45-0.65 0.40-0.65
Ni (%) 1.65-2.00 1.65-2.00
Mo (%) 0.20-0.30 0.20-0.30
S (%) Not specified 0.020-0.035
P (%) Not specified <=0.035
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) 20Ni7Mo2 IS 4432 20Ni7Mo2-S
Core Tensile Strength Not specified 800-1150 MPa (16 mm) / 700-1000 MPa (30 mm) / 650-950 MPa (63 mm)
Core Yield Strength Not specified >=550 MPa (16 mm) / >=500 MPa (30 mm) / >=450 MPa (63 mm)
Core Elongation Not specified >=8% (16 mm) / >=9% (30 mm) / >=10% (63 mm)
Core Reduction of Area Not specified >=35% (16 mm) / >=35% (30 mm) / >=40% (63 mm)
Hardness, annealed (A) Not specified <=217 HB
Typical Applications
IS 1570 (Part 4) 20Ni7Mo2
Not documented
IS 4432 20Ni7Mo2-S
Forgings and fabrication of case-hardened machine or automobile parts
Key Differences
Can IS 1570 (Part 4) 20Ni7Mo2 Be Substituted With IS 4432 20Ni7Mo2-S?
IS 1570 (Part 4) 20Ni7Mo2 and IS 4432 20Ni7Mo2-S overlap closely enough on chemistry and mechanical properties that IS 4432 20Ni7Mo2-S is often considered as a substitute for IS 1570 (Part 4) 20Ni7Mo2 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) 20Ni7Mo2
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IS 4432 20Ni7Mo2-S
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Frequently Asked Questions
What is the difference between IS 1570 (Part 4) 20Ni7Mo2 and IS 4432 20Ni7Mo2-S?
IS 4432 20Ni7Mo2-S specifies S, P which are not specified for IS 1570 (Part 4) 20Ni7Mo2.
Can IS 1570 (Part 4) 20Ni7Mo2 be substituted with IS 4432 20Ni7Mo2-S?
IS 1570 (Part 4) 20Ni7Mo2 and IS 4432 20Ni7Mo2-S overlap closely enough on chemistry and mechanical properties that IS 4432 20Ni7Mo2-S is often considered as a substitute for IS 1570 (Part 4) 20Ni7Mo2 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.