Related Material — 65% match
based on chemical composition and mechanical property overlap.
IS 11169 (Part 1) 15C4 (IS 11169 (Part 1):2022) and BS 970 EN36B (BS 970:1955) are both steel grades.
IS 11169 (Part 1) 15C4 is classified under Carbon Steel, while BS 970 EN36B is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below.
IS 11169 (Part 1) 15C4 is typically used for cold heading and cold extrusion of parts not heat treated after cold forming; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex a), while BS 970 EN36B is commonly used for case hardened gears and heavily loaded components.
IS 11169 (Part 1) 15C4 is defined under Bureau of Indian Standards (IS), originating from India, while BS 970 EN36B is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, IS 11169 (Part 1) 15C4 vs BS 970 EN36B is a 67.5% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a related material overall at 65%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 11169 (Part 1) 15C4
BS 970 EN36B
Hardness, annealed (+AC)
<=140 HBW
Not specified
Tensile Strength
Not specified
≥1004 MPa (65 tons/sq in, converted)
Elongation
Not specified
≥13%
Condition
Not specified
Core, after heat treatment (lowest-strength condition of the standard)
Typical Applications
IS 11169 (Part 1) 15C4
Cold heading and cold extrusion of parts not heat treated after cold forming; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex A)
BS 970 EN36B
Case hardened gears and heavily loaded components
Key Differences
Different category: IS 11169 (Part 1) 15C4 is Carbon Steel, BS 970 EN36B is Alloy Steel.
IS 11169 (Part 1) 15C4 specifies Cu, Mo which are not specified for BS 970 EN36B.
BS 970 EN36B specifies Si which is not specified for IS 11169 (Part 1) 15C4.
Can IS 11169 (Part 1) 15C4 Be Substituted With BS 970 EN36B?
IS 11169 (Part 1) 15C4 and BS 970 EN36B share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between IS 11169 (Part 1) 15C4 and BS 970 EN36B?
Different category: IS 11169 (Part 1) 15C4 is Carbon Steel, BS 970 EN36B is Alloy Steel. IS 11169 (Part 1) 15C4 specifies Cu, Mo which are not specified for BS 970 EN36B. BS 970 EN36B specifies Si which is not specified for IS 11169 (Part 1) 15C4.
Can IS 11169 (Part 1) 15C4 be substituted with BS 970 EN36B?
IS 11169 (Part 1) 15C4 and BS 970 EN36B share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.