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IS 4432 20Ni7Cr2Mo2-S vs SAE J404 8720

Close Alternative — 80.7% match based on chemical composition and mechanical property overlap.

IS 4432 20Ni7Cr2Mo2-S (IS 4432:1988) and SAE J404 8720 (SAE J404:2009) 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 SAE J404 8720 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope. IS 4432 20Ni7Cr2Mo2-S is defined under Bureau of Indian Standards (IS), originating from India, while SAE J404 8720 is defined under SAE International, originating from United States.

As per chemical composition, IS 4432 20Ni7Cr2Mo2-S vs SAE J404 8720 is a 80.7% 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 80.7%.

Frequently Compared With IS 4432 20Ni7Cr2Mo2-S:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H UNI 11234 100Cr6 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
80.7%
MECHANICAL MATCH
No shared data
OVERALL
80.7%
Specifications
Property IS 4432 20Ni7Cr2Mo2-S SAE J404 8720
Standard IS 4432:1988 SAE J404:2009
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
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 SAE J404 8720
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
SAE J404 8720
Chemistry-only alloy steel grade; see the composition notes for product scope
Can IS 4432 20Ni7Cr2Mo2-S Be Substituted With SAE J404 8720?
IS 4432 20Ni7Cr2Mo2-S and SAE J404 8720 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.
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IS 4432 20Ni7Cr2Mo2-S
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SAE J404 8720
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Frequently Asked Questions
What is the difference between IS 4432 20Ni7Cr2Mo2-S and SAE J404 8720?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4432 20Ni7Cr2Mo2-S be substituted with SAE J404 8720?
IS 4432 20Ni7Cr2Mo2-S and SAE J404 8720 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.