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EN 10085 41CrAlMo7 vs BS 970 (Part 1) 708M40

Close Alternative — 80% match based on chemical composition and mechanical property overlap.

EN 10085 41CrAlMo7 (EN 10085:2001) and BS 970 (Part 1) 708M40 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. EN 10085 41CrAlMo7 is typically used for nitrided precision components, crankshafts, gears, while BS 970 (Part 1) 708M40 is commonly used for used for axles, gears, shafts, studs, crankshafts, and heavy-duty machinery parts.. EN 10085 41CrAlMo7 is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 708M40 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10085 41CrAlMo7 vs BS 970 (Part 1) 708M40 is a 80% 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 80%.

Frequently Compared With EN 10085 41CrAlMo7:
GOST 4543 12HN3A NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
80%
MECHANICAL MATCH
No shared data
OVERALL
80%
Specifications
Property EN 10085 41CrAlMo7 BS 970 (Part 1) 708M40
Standard EN 10085:2001 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.38–0.45 0.36-0.44
Mn (%) 0.40–0.70 0.70-1.00
Cr (%) 1.40–1.80 0.90-1.20
Mo (%) 0.15–0.25 0.15-0.25
Al (%) 0.85–1.20 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 EN 10085 41CrAlMo7 BS 970 (Part 1) 708M40
Tensile Strength 850–1000 MPa Not specified
Surface Hardness HV ≥900 (nitrided) Not specified
Core Hardness HB 248–302 Not specified
Typical Applications
EN 10085 41CrAlMo7
Nitrided precision components, crankshafts, gears
BS 970 (Part 1) 708M40
Used for axles, gears, shafts, studs, crankshafts, and heavy-duty machinery parts.
Key Differences
Can EN 10085 41CrAlMo7 Be Substituted With BS 970 (Part 1) 708M40?
EN 10085 41CrAlMo7 and BS 970 (Part 1) 708M40 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.
Forms & Sizes Available on M-EX
EN 10085 41CrAlMo7
Round Bar → (4 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6300–6500 mm (248.03–255.91 in)
BS 970 (Part 1) 708M40
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5700–6000 mm (224.41–236.22 in)
On M-EX Right Now
EN 10085 41CrAlMo7
4 active listings and RFQs →
BS 970 (Part 1) 708M40
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10085 41CrAlMo7 and BS 970 (Part 1) 708M40?
EN 10085 41CrAlMo7 specifies Al which is not specified for BS 970 (Part 1) 708M40.
Can EN 10085 41CrAlMo7 be substituted with BS 970 (Part 1) 708M40?
EN 10085 41CrAlMo7 and BS 970 (Part 1) 708M40 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.