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IS 4432 16Ni3Cr2-S vs BS 970 (Part 1) 635M15

Strong Match — 85.5% match based on chemical composition and mechanical property overlap.

IS 4432 16Ni3Cr2-S (IS 4432:1988) and BS 970 (Part 1) 635M15 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. IS 4432 16Ni3Cr2-S is typically used for forgings and fabrication of case-hardened machine or automobile parts, while BS 970 (Part 1) 635M15 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. IS 4432 16Ni3Cr2-S is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 635M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 4432 16Ni3Cr2-S vs BS 970 (Part 1) 635M15 is a 85.5% 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 85.5%.

Frequently Compared With IS 4432 16Ni3Cr2-S:
IS 1570 (Part 4) 10Cr20Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
85.5%
MECHANICAL MATCH
No shared data
OVERALL
85.5%
Specifications
Property IS 4432 16Ni3Cr2-S BS 970 (Part 1) 635M15
Standard IS 4432:1988 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.12-0.20 0.12-0.18
Si (%) 0.15-0.35 Not specified
Mn (%) 0.60-1.00 0.60-0.90
Ni (%) 0.60-1.00 0.70-1.10
Cr (%) 0.40-0.80 0.40-0.80
S (%) 0.020-0.035 <=0.040
P (%) <=0.035 <=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 4432 16Ni3Cr2-S BS 970 (Part 1) 635M15
Core Tensile Strength 1100-1400 MPa (16 mm) / 1050-1400 MPa (30 mm) / 900-1200 MPa (63 mm) Not specified
Core Yield Strength >=750 MPa (16 mm) / >=720 MPa (30 mm) / >=600 MPa (63 mm) Not specified
Core Elongation >=8% (16 mm) / >=9% (30 mm) / >=11% (63 mm) Not specified
Core Reduction of Area >=35% (16 mm) / >=40% (30 mm) / >=45% (63 mm) Not specified
Hardness, annealed (A) <=207 HB Not specified
Typical Applications
IS 4432 16Ni3Cr2-S
Forgings and fabrication of case-hardened machine or automobile parts
BS 970 (Part 1) 635M15
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can IS 4432 16Ni3Cr2-S Be Substituted With BS 970 (Part 1) 635M15?
IS 4432 16Ni3Cr2-S and BS 970 (Part 1) 635M15 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 635M15 is often considered as a substitute for IS 4432 16Ni3Cr2-S in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
IS 4432 16Ni3Cr2-S
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BS 970 (Part 1) 635M15
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Frequently Asked Questions
What is the difference between IS 4432 16Ni3Cr2-S and BS 970 (Part 1) 635M15?
IS 4432 16Ni3Cr2-S specifies Si which is not specified for BS 970 (Part 1) 635M15.
Can IS 4432 16Ni3Cr2-S be substituted with BS 970 (Part 1) 635M15?
IS 4432 16Ni3Cr2-S and BS 970 (Part 1) 635M15 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 635M15 is often considered as a substitute for IS 4432 16Ni3Cr2-S in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.