Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
BS 970 EN16D (BS 970:1955) and IS 1570 (Part 4) 103Cr4 (IS 1570 (Part 4):1988) are both steel grades.
Both fall under the Alloy Steel category.
BS 970 EN16D is defined under British Standards (BS), originating from United Kingdom, while IS 1570 (Part 4) 103Cr4 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, BS 970 EN16D vs IS 1570 (Part 4) 103Cr4 is a 68.6% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
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 EN16D
IS 1570 (Part 4) 103Cr4
Tensile Strength
≥695 MPa (45 tons/sq in, converted)
Not specified
Yield Strength
≥525 MPa (34 tons/sq in, converted)
Not specified
Elongation
≥22%
Not specified
Hardness
201-255 HB
Not specified
Condition
Hardened and tempered R, ruling section 6 in (lowest-strength condition of the standard)
Not specified
Key Differences
BS 970 EN16D specifies Mo, S, P which are not specified for IS 1570 (Part 4) 103Cr4.
IS 1570 (Part 4) 103Cr4 specifies Cr which is not specified for BS 970 EN16D.
Can BS 970 EN16D Be Substituted With IS 1570 (Part 4) 103Cr4?
BS 970 EN16D and IS 1570 (Part 4) 103Cr4 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 BS 970 EN16D and IS 1570 (Part 4) 103Cr4?
BS 970 EN16D specifies Mo, S, P which are not specified for IS 1570 (Part 4) 103Cr4. IS 1570 (Part 4) 103Cr4 specifies Cr which is not specified for BS 970 EN16D.
Can BS 970 EN16D be substituted with IS 1570 (Part 4) 103Cr4?
BS 970 EN16D and IS 1570 (Part 4) 103Cr4 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.