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BS 970 EN41B vs IS 1570 (Part 4) 103Cr4

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 EN41B (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 EN41B 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 EN41B vs IS 1570 (Part 4) 103Cr4 is a 58.3% 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%.

Frequently Compared With BS 970 EN41B:
UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A NF A35-565 100C6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 103Cr6
Other Alloy Steel Grades to Compare With BS 970 EN41B:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
58.3%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN41B IS 1570 (Part 4) 103Cr4
Standard BS 970:1955 IS 1570 (Part 4):1988
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 0.95-1.10
Si (%) 0.10-0.45 0.10-0.35
Mn (%) <=0.65 0.25-0.45
Ni (%) <=0.40 Not specified
Cr (%) 1.40-1.80 0.90-1.20
Mo (%) 0.10-0.25 Not specified
Al (%) 0.90-1.30 Not specified
S (%) <=0.050 Not specified
P (%) <=0.050 Not specified
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 EN41B 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 ≥20% 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
Typical Applications
BS 970 EN41B
Nitrided gears, crankshafts, cylinder liners
IS 1570 (Part 4) 103Cr4
Not documented
Key Differences
Can BS 970 EN41B Be Substituted With IS 1570 (Part 4) 103Cr4?
BS 970 EN41B 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.
Forms & Sizes Available on M-EX
BS 970 EN41B
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5700–6800 mm (224.41–267.72 in)
IS 1570 (Part 4) 103Cr4
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On M-EX Right Now
BS 970 EN41B
3 active listings and RFQs →
IS 1570 (Part 4) 103Cr4
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN41B and IS 1570 (Part 4) 103Cr4?
BS 970 EN41B specifies Ni, Mo, Al, S which are not specified for IS 1570 (Part 4) 103Cr4.
Can BS 970 EN41B be substituted with IS 1570 (Part 4) 103Cr4?
BS 970 EN41B 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.