Close Alternative — 83.8% match
based on chemical composition and mechanical property overlap.
IS 4432 15Cr3 (IS 4432:1988) and BS 970 (Part 1) 523H15 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Alloy Steel category.
IS 4432 15Cr3 is typically used for forgings and fabrication of case-hardened machine or automobile parts, while BS 970 (Part 1) 523H15 is commonly used for case hardening steel (section four).
IS 4432 15Cr3 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 (Part 1) 523H15 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, IS 4432 15Cr3 vs BS 970 (Part 1) 523H15 is a 83.8% 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 83.8%.
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 15Cr3
BS 970 (Part 1) 523H15
Core Tensile Strength
650-900 MPa (16 mm) / 600-900 MPa (30 mm)
Not specified
Core Yield Strength
>=430 MPa (16 mm) / >=360 MPa (30 mm)
Not specified
Core Elongation
>=12% (16 mm) / >=14% (30 mm)
Not specified
Core Reduction of Area
>=35% (16 mm) / >=40% (30 mm)
Not specified
Hardness, annealed (A)
<=174 HB
Not specified
Typical Applications
IS 4432 15Cr3
Forgings and fabrication of case-hardened machine or automobile parts
BS 970 (Part 1) 523H15
Case hardening steel (section four)
Key Differences
IS 4432 15Cr3 specifies Si, S, P which are not specified for BS 970 (Part 1) 523H15.
Can IS 4432 15Cr3 Be Substituted With BS 970 (Part 1) 523H15?
IS 4432 15Cr3 and BS 970 (Part 1) 523H15 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.
What is the difference between IS 4432 15Cr3 and BS 970 (Part 1) 523H15?
IS 4432 15Cr3 specifies Si, S, P which are not specified for BS 970 (Part 1) 523H15.
Can IS 4432 15Cr3 be substituted with BS 970 (Part 1) 523H15?
IS 4432 15Cr3 and BS 970 (Part 1) 523H15 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.