Strong Match — 89.7% match
based on chemical composition and mechanical property overlap.
IS 1875 Class 3 (IS 1875:1992) and IS 11169 (Part 1) 15C8 (IS 11169 (Part 1):1984) are both steel grades.
Both fall under the Carbon Steel category.
IS 1875 Class 3 is typically used for billets, blooms, slabs and bars for general engineering forgings, while IS 11169 (Part 1) 15C8 is commonly used for cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1).
IS 1875 Class 3 is defined under Bureau of Indian Standards (IS), originating from India, while IS 11169 (Part 1) 15C8 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 1875 Class 3 vs IS 11169 (Part 1) 15C8 is a 84.6% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 89.7%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 1875 Class 3
IS 11169 (Part 1) 15C8
Tensile Strength
490 MPa min
Not specified
Yield Strength
270 MPa min
Not specified
Elongation
>=21%
Not specified
Hardness
140 HB min
Not specified
Condition
as rolled or as forged and normalised, ruling section up to 100 mm
Not specified
Normalising Temperature
860-890 °C (for information)
Not specified
Bend Test (if ordered)
32 mm square test piece bent round a 44 mm former without fracture
Not specified
Hardness, annealed
Not specified
<=140 HB
Typical Applications
IS 1875 Class 3
Billets, blooms, slabs and bars for general engineering forgings
IS 11169 (Part 1) 15C8
Cold heading and cold extrusion; the standard covers wires, wire rods and bars of 2 to 100 mm diameter (clause 1.1)
Key Differences
IS 1875 Class 3 specifies Si, S, P which are not specified for IS 11169 (Part 1) 15C8.
Can IS 1875 Class 3 Be Substituted With IS 11169 (Part 1) 15C8?
IS 1875 Class 3 and IS 11169 (Part 1) 15C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 15C8 is often considered as a substitute for IS 1875 Class 3 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 IS 1875 Class 3 and IS 11169 (Part 1) 15C8?
IS 1875 Class 3 specifies Si, S, P which are not specified for IS 11169 (Part 1) 15C8.
Can IS 1875 Class 3 be substituted with IS 11169 (Part 1) 15C8?
IS 1875 Class 3 and IS 11169 (Part 1) 15C8 overlap closely enough on chemistry and mechanical properties that IS 11169 (Part 1) 15C8 is often considered as a substitute for IS 1875 Class 3 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.