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IS 4432 20Ni7Cr2Mo2 vs EN 10084 18CrNiMo7-6

Close Alternative — 77.8% match based on chemical composition and mechanical property overlap.

IS 4432 20Ni7Cr2Mo2 (IS 4432:1988) and EN 10084 18CrNiMo7-6 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. IS 4432 20Ni7Cr2Mo2 is typically used for forgings and fabrication of case-hardened machine or automobile parts, while EN 10084 18CrNiMo7-6 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). IS 4432 20Ni7Cr2Mo2 is defined under Bureau of Indian Standards (IS), originating from India, while EN 10084 18CrNiMo7-6 is defined under European Standard (EN), originating from Europe.

As per chemical composition, IS 4432 20Ni7Cr2Mo2 vs EN 10084 18CrNiMo7-6 is a 66.7% match. As per mechanical properties, the match is 100%. Combined, this makes them a close alternative overall at 77.8%.

Frequently Compared With IS 4432 20Ni7Cr2Mo2:
UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
66.7%
MECHANICAL MATCH
100%
OVERALL
77.8%
Specifications
Property IS 4432 20Ni7Cr2Mo2 EN 10084 18CrNiMo7-6
Standard IS 4432:1988 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.17-0.22 0.15-0.21
Si (%) 0.15-0.35 <=0.40
Mn (%) 0.45-0.65 0.50-0.90
Ni (%) 1.65-2.00 1.40-1.70
Cr (%) 0.40-0.60 1.50-1.80
Mo (%) 0.20-0.30 0.25-0.35
S (%) <=0.035 <=0.035
P (%) <=0.035 <=0.025
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 EN 10084 18CrNiMo7-6
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
Condition Not specified Soft annealed
Hardenability Not specified +H band at 1.5 mm from the quenched end: 40 to 48 HRC
Hardness Not specified Soft annealed: 229 HB max
Typical Applications
IS 4432 20Ni7Cr2Mo2
Forgings and fabrication of case-hardened machine or automobile parts
EN 10084 18CrNiMo7-6
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Can IS 4432 20Ni7Cr2Mo2 Be Substituted With EN 10084 18CrNiMo7-6?
IS 4432 20Ni7Cr2Mo2 and EN 10084 18CrNiMo7-6 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
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EN 10084 18CrNiMo7-6
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Frequently Asked Questions
What is the difference between IS 4432 20Ni7Cr2Mo2 and EN 10084 18CrNiMo7-6?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4432 20Ni7Cr2Mo2 be substituted with EN 10084 18CrNiMo7-6?
IS 4432 20Ni7Cr2Mo2 and EN 10084 18CrNiMo7-6 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.