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BS 970 (Part 1) 905M39 vs DIN 17211 41CrAlMo7-4

Close Alternative — 84.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 905M39 (BS 970 (Part 1):1983) and DIN 17211 41CrAlMo7-4 (DIN 17211:1987) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 905M39 is typically used for through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of table 6., while DIN 17211 41CrAlMo7-4 is commonly used for used for nitrided shafts, gears, crankshafts, spindles, extrusion screws, and wear-resistant machine components.. BS 970 (Part 1) 905M39 is defined under British Standards (BS), originating from United Kingdom, while DIN 17211 41CrAlMo7-4 is defined under Deutsches Institut fur Normung (DIN), originating from Germany.

As per chemical composition, BS 970 (Part 1) 905M39 vs DIN 17211 41CrAlMo7-4 is a 84.2% 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 84.2%.

Frequently Compared With BS 970 (Part 1) 905M39:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
84.2%
MECHANICAL MATCH
No shared data
OVERALL
84.2%
Specifications
Property BS 970 (Part 1) 905M39 DIN 17211 41CrAlMo7-4
Standard BS 970 (Part 1):1983 DIN 17211:1987
Category Alloy Steel Alloy Steel
C (%) 0.35-0.43 0.38–0.48
Mn (%) 0.40-0.65 0.40–0.70
P (%) <=0.025 Not specified
S (%) <=0.025 Not specified
Cr (%) 1.40-1.80 1.40–1.80
Mo (%) 0.15-0.25 0.20–0.30
Al (%) 0.90-1.30 0.85–1.20
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 (Part 1) 905M39 DIN 17211 41CrAlMo7-4
Tensile Strength Not specified 900–1050 MPa
Surface Hardness HV Not specified ≥950 (nitrided)
Typical Applications
BS 970 (Part 1) 905M39
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
DIN 17211 41CrAlMo7-4
Used for nitrided shafts, gears, crankshafts, spindles, extrusion screws, and wear-resistant machine components.
Key Differences
Can BS 970 (Part 1) 905M39 Be Substituted With DIN 17211 41CrAlMo7-4?
BS 970 (Part 1) 905M39 and DIN 17211 41CrAlMo7-4 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
BS 970 (Part 1) 905M39
No active listings currently.
DIN 17211 41CrAlMo7-4
Round Bar → (4 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4800–6900 mm (188.98–271.65 in)
On M-EX Right Now
BS 970 (Part 1) 905M39
0 active listings and RFQs →
DIN 17211 41CrAlMo7-4
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 905M39 and DIN 17211 41CrAlMo7-4?
BS 970 (Part 1) 905M39 specifies P, S which are not specified for DIN 17211 41CrAlMo7-4.
Can BS 970 (Part 1) 905M39 be substituted with DIN 17211 41CrAlMo7-4?
BS 970 (Part 1) 905M39 and DIN 17211 41CrAlMo7-4 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.