Close Alternative — 71% match
based on chemical composition and mechanical property overlap.
BS 970 EN33 (BS 970:1955) and IS 11169 (Part 1) 15Ni5Cr5 (IS 11169 (Part 1):2022) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN33 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 45 tons/sq in min., while IS 11169 (Part 1) 15Ni5Cr5 is commonly used for cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, annex b).
BS 970 EN33 is defined under British Standards (BS), originating from United Kingdom, while IS 11169 (Part 1) 15Ni5Cr5 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN33 vs IS 11169 (Part 1) 15Ni5Cr5 is a 71% 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 71%.
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 EN33
IS 11169 (Part 1) 15Ni5Cr5
Tensile Strength
≥695 MPa (45 tons/sq in, converted)
Not specified
Elongation
≥18%
Not specified
Condition
Core, after heat treatment (lowest-strength condition of the standard)
Not specified
Hardness, annealed (+AC)
Not specified
<=200 HBW
Typical Applications
BS 970 EN33
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 45 tons/sq in min.
IS 11169 (Part 1) 15Ni5Cr5
Cold heading and cold extrusion of parts that are case hardened; the standard covers bars, wire rods and wires of 2 to 100 mm (clause 1.1, Annex B)
Key Differences
IS 11169 (Part 1) 15Ni5Cr5 specifies Cu, Mo which are not specified for BS 970 EN33.
Can BS 970 EN33 Be Substituted With IS 11169 (Part 1) 15Ni5Cr5?
BS 970 EN33 and IS 11169 (Part 1) 15Ni5Cr5 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 BS 970 EN33 and IS 11169 (Part 1) 15Ni5Cr5?
IS 11169 (Part 1) 15Ni5Cr5 specifies Cu, Mo which are not specified for BS 970 EN33.
Can BS 970 EN33 be substituted with IS 11169 (Part 1) 15Ni5Cr5?
BS 970 EN33 and IS 11169 (Part 1) 15Ni5Cr5 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.