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IS 4432 20Ni7Cr2Mo2-S vs IS 11169 (Part 1) 20Ni2Cr2Mo3

Close Alternative — 78.2% match based on chemical composition and mechanical property overlap.

IS 4432 20Ni7Cr2Mo2-S (IS 4432:1988) and IS 11169 (Part 1) 20Ni2Cr2Mo3 (IS 11169 (Part 1):2022) are both steel grades. Both fall under the Alloy Steel category. IS 4432 20Ni7Cr2Mo2-S is typically used for forgings and fabrication of case-hardened machine or automobile parts, while IS 11169 (Part 1) 20Ni2Cr2Mo3 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). IS 4432 20Ni7Cr2Mo2-S is defined under Bureau of Indian Standards (IS), originating from India, while IS 11169 (Part 1) 20Ni2Cr2Mo3 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, IS 4432 20Ni7Cr2Mo2-S vs IS 11169 (Part 1) 20Ni2Cr2Mo3 is a 78.2% 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 78.2%.

Frequently Compared With IS 4432 20Ni7Cr2Mo2-S:
IS 4367 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 7) 12Cr2Mo5V2H IS 1570 (Part 4) 105Cr5
Match Breakdown
CHEMISTRY MATCH
78.2%
MECHANICAL MATCH
No shared data
OVERALL
78.2%
Specifications
Property IS 4432 20Ni7Cr2Mo2-S IS 11169 (Part 1) 20Ni2Cr2Mo3
Standard IS 4432:1988 IS 11169 (Part 1):2022
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.18-0.23
Si (%) 0.15-0.35 0.15-0.35
Mn (%) 0.45-0.65 0.70-0.90
Ni (%) 1.65-2.00 0.40-0.70
Cr (%) 0.40-0.60 0.40-0.60
Mo (%) 0.20-0.30 0.20-0.30
S (%) 0.020-0.035 <=0.040
P (%) <=0.035 <=0.030
Cu (%) Not specified <=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 IS 4432 20Ni7Cr2Mo2-S IS 11169 (Part 1) 20Ni2Cr2Mo3
Core Tensile Strength 950-1350 MPa (16 mm) / 850-1200 MPa (30 mm) / 800-1150 MPa (63 mm) Not specified
Core Yield Strength >=650 MPa (16 mm) / >=600 MPa (30 mm) / >=550 MPa (63 mm) Not specified
Core Elongation >=8% (16 mm) / >=9% (30 mm) / >=10% (63 mm) Not specified
Core Reduction of Area >=35% (16 mm) / >=35% (30 mm) / >=40% (63 mm) Not specified
Hardness, annealed (A) <=229 HB Not specified
Typical Applications
IS 4432 20Ni7Cr2Mo2-S
Forgings and fabrication of case-hardened machine or automobile parts
IS 11169 (Part 1) 20Ni2Cr2Mo3
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 IS 4432 20Ni7Cr2Mo2-S Be Substituted With IS 11169 (Part 1) 20Ni2Cr2Mo3?
IS 4432 20Ni7Cr2Mo2-S and IS 11169 (Part 1) 20Ni2Cr2Mo3 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.
On M-EX Right Now
IS 4432 20Ni7Cr2Mo2-S
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IS 11169 (Part 1) 20Ni2Cr2Mo3
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Frequently Asked Questions
What is the difference between IS 4432 20Ni7Cr2Mo2-S and IS 11169 (Part 1) 20Ni2Cr2Mo3?
IS 11169 (Part 1) 20Ni2Cr2Mo3 specifies Cu which is not specified for IS 4432 20Ni7Cr2Mo2-S.
Can IS 4432 20Ni7Cr2Mo2-S be substituted with IS 11169 (Part 1) 20Ni2Cr2Mo3?
IS 4432 20Ni7Cr2Mo2-S and IS 11169 (Part 1) 20Ni2Cr2Mo3 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.