Post Stock Login Register

IS 4432 16Ni3Cr2-S vs BS 970 (Part 3) 637M17

Close Alternative — 79.9% match based on chemical composition and mechanical property overlap.

IS 4432 16Ni3Cr2-S (IS 4432:1988) and BS 970 (Part 3) 637M17 (BS 970 (Part 3):1991) 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 3) 637M17 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15). IS 4432 16Ni3Cr2-S is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 3) 637M17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, IS 4432 16Ni3Cr2-S vs BS 970 (Part 3) 637M17 is a 79.9% 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 79.9%.

Frequently Compared With IS 4432 16Ni3Cr2-S:
NF A35-565 100C6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
79.9%
MECHANICAL MATCH
No shared data
OVERALL
79.9%
Specifications
Property IS 4432 16Ni3Cr2-S BS 970 (Part 3) 637M17
Standard IS 4432:1988 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.12-0.20 0.14-0.20
Si (%) 0.15-0.35 0.10-0.40
Mn (%) 0.60-1.00 0.60-0.90
Ni (%) 0.60-1.00 0.85-1.25
Cr (%) 0.40-0.80 0.60-1.00
S (%) 0.020-0.035 <=0.05
P (%) <=0.035 <=0.04
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 3) 637M17
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 3) 637M17
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
Can IS 4432 16Ni3Cr2-S Be Substituted With BS 970 (Part 3) 637M17?
IS 4432 16Ni3Cr2-S and BS 970 (Part 3) 637M17 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 16Ni3Cr2-S
0 active listings and RFQs →
BS 970 (Part 3) 637M17
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 4432 16Ni3Cr2-S and BS 970 (Part 3) 637M17?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 4432 16Ni3Cr2-S be substituted with BS 970 (Part 3) 637M17?
IS 4432 16Ni3Cr2-S and BS 970 (Part 3) 637M17 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.