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

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

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

As per chemical composition, BS 970 (Part 1) 635M15 vs IS 4432 16Ni3Cr2-S 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 BS 970 (Part 1) 635M15:
IS 11169 (Part 1) 12Ni3Cr2 IS 11169 (Part 1) 10Ni5Cr4 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
85.5%
MECHANICAL MATCH
No shared data
OVERALL
85.5%
Specifications
Property BS 970 (Part 1) 635M15 IS 4432 16Ni3Cr2-S
Standard BS 970 (Part 1):1983 IS 4432:1988
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.12-0.20
Mn (%) 0.60-0.90 0.60-1.00
Cr (%) 0.40-0.80 0.40-0.80
Ni (%) 0.70-1.10 0.60-1.00
P (%) <=0.035 <=0.035
S (%) <=0.040 0.020-0.035
Si (%) Not specified 0.15-0.35
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 635M15 IS 4432 16Ni3Cr2-S
Core Tensile Strength Not specified 1100-1400 MPa (16 mm) / 1050-1400 MPa (30 mm) / 900-1200 MPa (63 mm)
Core Yield Strength Not specified >=750 MPa (16 mm) / >=720 MPa (30 mm) / >=600 MPa (63 mm)
Core Elongation Not specified >=8% (16 mm) / >=9% (30 mm) / >=11% (63 mm)
Core Reduction of Area Not specified >=35% (16 mm) / >=40% (30 mm) / >=45% (63 mm)
Hardness, annealed (A) Not specified <=207 HB
Typical Applications
BS 970 (Part 1) 635M15
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
IS 4432 16Ni3Cr2-S
Forgings and fabrication of case-hardened machine or automobile parts
Key Differences
Can BS 970 (Part 1) 635M15 Be Substituted With IS 4432 16Ni3Cr2-S?
BS 970 (Part 1) 635M15 and IS 4432 16Ni3Cr2-S overlap closely enough on chemistry and mechanical properties that IS 4432 16Ni3Cr2-S is often considered as a substitute for BS 970 (Part 1) 635M15 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
BS 970 (Part 1) 635M15
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IS 4432 16Ni3Cr2-S
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 635M15 and IS 4432 16Ni3Cr2-S?
IS 4432 16Ni3Cr2-S specifies Si which is not specified for BS 970 (Part 1) 635M15.
Can BS 970 (Part 1) 635M15 be substituted with IS 4432 16Ni3Cr2-S?
BS 970 (Part 1) 635M15 and IS 4432 16Ni3Cr2-S overlap closely enough on chemistry and mechanical properties that IS 4432 16Ni3Cr2-S is often considered as a substitute for BS 970 (Part 1) 635M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.