Related Material — 62.4% match
based on chemical composition and mechanical property overlap.
EN 10025-5 S235J2W (EN 10025-5:2019) and IS 11169 (Part 1) 21C10BT (IS 11169 (Part 1):2022) are both steel grades.
EN 10025-5 S235J2W is classified under Structural Steel (Corten / Weathering), while IS 11169 (Part 1) 21C10BT is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below.
EN 10025-5 S235J2W is typically used for weathering (atmospheric corrosion-resistant) structural steel; bridges, railway wagons, shipping containers, transmission towers, outdoor structures exposed without protective coating, while IS 11169 (Part 1) 21C10BT is commonly used for cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex c).
EN 10025-5 S235J2W is defined under European Standard (EN), originating from Europe, while IS 11169 (Part 1) 21C10BT is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, EN 10025-5 S235J2W vs IS 11169 (Part 1) 21C10BT is a 62.4% 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 62.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10025-5 S235J2W
IS 11169 (Part 1) 21C10BT
Tensile Strength
360-510 MPa
Not specified
Yield Strength
>=235 MPa
Not specified
Elongation
>=26%
Not specified
Condition
Nominal thickness up to 16 mm for yield, 3 to 100 mm for tensile, 3 to 40 mm for elongation (Lo = 5.65 sqrt(S0), longitudinal); transverse values are lower, see blocks
Cold heading and cold extrusion of parts that are quenched and tempered; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex C)
Key Differences
Different category: EN 10025-5 S235J2W is Structural Steel (Corten / Weathering), IS 11169 (Part 1) 21C10BT is Alloy Steel.
IS 11169 (Part 1) 21C10BT specifies B, Mo which are not specified for EN 10025-5 S235J2W.
Can EN 10025-5 S235J2W Be Substituted With IS 11169 (Part 1) 21C10BT?
EN 10025-5 S235J2W and IS 11169 (Part 1) 21C10BT 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 EN 10025-5 S235J2W and IS 11169 (Part 1) 21C10BT?
Different category: EN 10025-5 S235J2W is Structural Steel (Corten / Weathering), IS 11169 (Part 1) 21C10BT is Alloy Steel. IS 11169 (Part 1) 21C10BT specifies B, Mo which are not specified for EN 10025-5 S235J2W.
Can EN 10025-5 S235J2W be substituted with IS 11169 (Part 1) 21C10BT?
EN 10025-5 S235J2W and IS 11169 (Part 1) 21C10BT 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.