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BS 970 (Part 1) 637M17 vs EN 10084 10NiCr5-4

Close Alternative — 70.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 637M17 (BS 970 (Part 1):1983) and EN 10084 10NiCr5-4 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 637M17 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., while EN 10084 10NiCr5-4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). BS 970 (Part 1) 637M17 is defined under British Standards (BS), originating from United Kingdom, while EN 10084 10NiCr5-4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 637M17 vs EN 10084 10NiCr5-4 is a 70.2% 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 70.2%.

Frequently Compared With BS 970 (Part 1) 637M17:
IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
70.2%
MECHANICAL MATCH
No shared data
OVERALL
70.2%
Specifications
Property BS 970 (Part 1) 637M17 EN 10084 10NiCr5-4
Standard BS 970 (Part 1):1983 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 0.07-0.12
Mn (%) 0.60-0.90 0.60-0.90
Cr (%) 0.60-1.00 0.90-1.20
Ni (%) 0.85-1.25 1.20-1.50
P (%) <=0.035 <=0.025
S (%) <=0.040 <=0.035
Si (%) Not specified <=0.40
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) 637M17 EN 10084 10NiCr5-4
Condition Not specified Soft annealed
Hardenability Not specified +H band at 1.5 mm from the quenched end: 32 to 41 HRC
Hardness Not specified Soft annealed: 192 HB max
Typical Applications
BS 970 (Part 1) 637M17
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
EN 10084 10NiCr5-4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Key Differences
Can BS 970 (Part 1) 637M17 Be Substituted With EN 10084 10NiCr5-4?
BS 970 (Part 1) 637M17 and EN 10084 10NiCr5-4 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.
On M-EX Right Now
BS 970 (Part 1) 637M17
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EN 10084 10NiCr5-4
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 637M17 and EN 10084 10NiCr5-4?
EN 10084 10NiCr5-4 specifies Si which is not specified for BS 970 (Part 1) 637M17.
Can BS 970 (Part 1) 637M17 be substituted with EN 10084 10NiCr5-4?
BS 970 (Part 1) 637M17 and EN 10084 10NiCr5-4 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.