Strong Match — 85.2% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 523M15 (BS 970 (Part 1):1983) and IS 4367 15Cr3 (IS 4367:1991) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 (Part 1) 523M15 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., while IS 4367 15Cr3 is commonly used for low-alloy chromium case-hardening steel; used for gears, shafts, and transmission components requiring higher core strength and wear resistance than plain carbon case-hardening grades.
BS 970 (Part 1) 523M15 is defined under British Standards (BS), originating from United Kingdom, while IS 4367 15Cr3 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 (Part 1) 523M15 vs IS 4367 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%.
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) 523M15
IS 4367 15Cr3
Tensile Strength
Not specified
600 MPa min
Elongation
Not specified
>=13%
Izod Impact
Not specified
48 J min
Hardness (soft annealed)
Not specified
<=170 HB
Condition
Not specified
Refined, quenched and stress relieved (core properties), ruling section up to 30 mm
Typical Applications
BS 970 (Part 1) 523M15
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
IS 4367 15Cr3
Low-alloy chromium case-hardening steel; used for gears, shafts, and transmission components requiring higher core strength and wear resistance than plain carbon case-hardening grades
Key Differences
IS 4367 15Cr3 specifies Si which is not specified for BS 970 (Part 1) 523M15.
Can BS 970 (Part 1) 523M15 Be Substituted With IS 4367 15Cr3?
BS 970 (Part 1) 523M15 and IS 4367 15Cr3 overlap closely enough on chemistry and mechanical properties that IS 4367 15Cr3 is often considered as a substitute for BS 970 (Part 1) 523M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between BS 970 (Part 1) 523M15 and IS 4367 15Cr3?
IS 4367 15Cr3 specifies Si which is not specified for BS 970 (Part 1) 523M15.
Can BS 970 (Part 1) 523M15 be substituted with IS 4367 15Cr3?
BS 970 (Part 1) 523M15 and IS 4367 15Cr3 overlap closely enough on chemistry and mechanical properties that IS 4367 15Cr3 is often considered as a substitute for BS 970 (Part 1) 523M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.