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BS 970 (Part 1) 523H15 vs IS 4432 15Cr3

Strong Match — 85.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 523H15 (BS 970 (Part 1):1983) and IS 4432 15Cr3 (IS 4432:1988) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 523H15 is typically used for case hardening steel supplied to specified hardenability limits (end quench test, table 10)., while IS 4432 15Cr3 is commonly used for forgings and fabrication of case-hardened machine or automobile parts. BS 970 (Part 1) 523H15 is defined under British Standards (BS), originating from United Kingdom, while IS 4432 15Cr3 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 (Part 1) 523H15 vs IS 4432 15Cr3 is a 85.2% 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 85.2%.

Frequently Compared With BS 970 (Part 1) 523H15:
NF A35-565 100C6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 11169 (Part 1) 10Ni5Cr4
Match Breakdown
CHEMISTRY MATCH
85.2%
MECHANICAL MATCH
No shared data
OVERALL
85.2%
Specifications
Property BS 970 (Part 1) 523H15 IS 4432 15Cr3
Standard BS 970 (Part 1):1983 IS 4432:1988
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.12-0.18
Mn (%) 0.30-0.60 0.40-0.60
Cr (%) 0.30-0.60 0.50-0.80
P (%) <=0.035 <=0.035
S (%) <=0.040 <=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) 523H15 IS 4432 15Cr3
Core Tensile Strength Not specified 650-900 MPa (16 mm) / 600-900 MPa (30 mm)
Core Yield Strength Not specified >=430 MPa (16 mm) / >=360 MPa (30 mm)
Core Elongation Not specified >=12% (16 mm) / >=14% (30 mm)
Core Reduction of Area Not specified >=35% (16 mm) / >=40% (30 mm)
Hardness, annealed (A) Not specified <=174 HB
Typical Applications
BS 970 (Part 1) 523H15
Case hardening steel supplied to specified hardenability limits (end quench test, Table 10).
IS 4432 15Cr3
Forgings and fabrication of case-hardened machine or automobile parts
Key Differences
Can BS 970 (Part 1) 523H15 Be Substituted With IS 4432 15Cr3?
BS 970 (Part 1) 523H15 and IS 4432 15Cr3 overlap closely enough on chemistry and mechanical properties that IS 4432 15Cr3 is often considered as a substitute for BS 970 (Part 1) 523H15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 1) 523H15
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IS 4432 15Cr3
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 523H15 and IS 4432 15Cr3?
IS 4432 15Cr3 specifies Si which is not specified for BS 970 (Part 1) 523H15.
Can BS 970 (Part 1) 523H15 be substituted with IS 4432 15Cr3?
BS 970 (Part 1) 523H15 and IS 4432 15Cr3 overlap closely enough on chemistry and mechanical properties that IS 4432 15Cr3 is often considered as a substitute for BS 970 (Part 1) 523H15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.