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BS 970 (Part 1) 817A37 vs DIN 17200 40NiCrMo6

Close Alternative — 78.5% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 817A37 (BS 970 (Part 1):1983) and DIN 17200 40NiCrMo6 (DIN 17200:1986) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 817A37 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 17200 40NiCrMo6 is commonly used for heavy forgings, crankshafts, high strength components. BS 970 (Part 1) 817A37 is defined under British Standards (BS), originating from United Kingdom, while DIN 17200 40NiCrMo6 is defined under Deutsches Institut fur Normung (DIN), originating from Germany.

As per chemical composition, BS 970 (Part 1) 817A37 vs DIN 17200 40NiCrMo6 is a 78.5% 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 78.5%.

Frequently Compared With BS 970 (Part 1) 817A37:
UNI 11234 100Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
78.5%
MECHANICAL MATCH
No shared data
OVERALL
78.5%
Specifications
Property BS 970 (Part 1) 817A37 DIN 17200 40NiCrMo6
Standard BS 970 (Part 1):1983 DIN 17200:1986
Category Alloy Steel Alloy Steel
C (%) 0.35-0.40 0.36–0.44
Mn (%) 0.45-0.70 0.50–0.80
Cr (%) 1.00-1.40 0.60–1.00
Mo (%) 0.20-0.35 0.15–0.30
Ni (%) 1.30-1.70 1.30–1.70
P (%) <=0.035 Not specified
S (%) <=0.040 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 (Part 1) 817A37 DIN 17200 40NiCrMo6
Tensile Strength Not specified 900–1100 MPa
Yield Strength Not specified ≥720 MPa
Elongation Not specified ≥12%
Typical Applications
BS 970 (Part 1) 817A37
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
DIN 17200 40NiCrMo6
Heavy forgings, crankshafts, high strength components
Key Differences
Can BS 970 (Part 1) 817A37 Be Substituted With DIN 17200 40NiCrMo6?
BS 970 (Part 1) 817A37 and DIN 17200 40NiCrMo6 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) 817A37
No active listings currently.
DIN 17200 40NiCrMo6
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5500–6900 mm (216.54–271.65 in)
On M-EX Right Now
BS 970 (Part 1) 817A37
0 active listings and RFQs →
DIN 17200 40NiCrMo6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 817A37 and DIN 17200 40NiCrMo6?
BS 970 (Part 1) 817A37 specifies P, S which are not specified for DIN 17200 40NiCrMo6.
Can BS 970 (Part 1) 817A37 be substituted with DIN 17200 40NiCrMo6?
BS 970 (Part 1) 817A37 and DIN 17200 40NiCrMo6 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.