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BS 970 EN41B vs IS 4367 10Cr9Mo10

Minimal Match — 41.5% match based on chemical composition and mechanical property overlap.

BS 970 EN41B (BS 970:1955) and IS 4367 10Cr9Mo10 (IS 4367:1991) 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 4367 10Cr9Mo10 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, BS 970 EN41B vs IS 4367 10Cr9Mo10 is a 62.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 41.5%.

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 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6
Other Alloy Steel Grades to Compare With BS 970 EN41B:
EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
62.2%
MECHANICAL MATCH
0%
OVERALL
41.5%
Specifications
Property BS 970 EN41B IS 4367 10Cr9Mo10
Standard BS 970:1955 IS 4367:1991
Category Alloy Steel Alloy Steel
C (%) 0.35-0.45 <=0.15
Si (%) 0.10-0.45 <=0.50
Mn (%) <=0.65 0.40-0.70
Ni (%) <=0.40 <=0.30
Cr (%) 1.40-1.80 2.00-2.50
Mo (%) 0.10-0.25 0.90-1.10
Al (%) 0.90-1.30 Not specified
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
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 4367 10Cr9Mo10
Tensile Strength ≥695 MPa (45 tons/sq in, converted) 410-590 MPa
Yield Strength ≥525 MPa (34 tons/sq in, converted) 245 MPa min
Elongation ≥20% >=18%
Hardness 201-255 HB Not specified
Condition Hardened and tempered R, ruling section 6 in (lowest-strength condition of the standard) Normalised and tempered, ruling section up to 50 mm
Izod Impact Not specified 55 J min
Hardness (soft annealed) Not specified <=187 HB
Typical Applications
BS 970 EN41B
Nitrided gears, crankshafts, cylinder liners
IS 4367 10Cr9Mo10
Not documented
Key Differences
Can BS 970 EN41B Be Substituted With IS 4367 10Cr9Mo10?
BS 970 EN41B and IS 4367 10Cr9Mo10 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 4367 10Cr9Mo10
No active listings currently.
On M-EX Right Now
BS 970 EN41B
3 active listings and RFQs →
IS 4367 10Cr9Mo10
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN41B and IS 4367 10Cr9Mo10?
BS 970 EN41B specifies Al which is not specified for IS 4367 10Cr9Mo10.
Can BS 970 EN41B be substituted with IS 4367 10Cr9Mo10?
BS 970 EN41B and IS 4367 10Cr9Mo10 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.