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BS 970 (Part 3) 635M15 vs EN 10084 10NiCr5-4

Close Alternative — 70.9% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 635M15 (BS 970 (Part 3):1991) and EN 10084 10NiCr5-4 (EN 10084:2008) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 635M15 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15), while EN 10084 10NiCr5-4 is commonly used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1). BS 970 (Part 3) 635M15 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 3) 635M15 vs EN 10084 10NiCr5-4 is a 70.9% 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 70.9%.

Frequently Compared With BS 970 (Part 3) 635M15:
IS 11169 (Part 1) 12Ni3Cr2 GOST 4543 12HN3A IS 1570 (Part 4) 103Cr4 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
70.9%
MECHANICAL MATCH
No shared data
OVERALL
70.9%
Specifications
Property BS 970 (Part 3) 635M15 EN 10084 10NiCr5-4
Standard BS 970 (Part 3):1991 EN 10084:2008
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.07-0.12
Si (%) 0.10-0.40 <=0.40
Mn (%) 0.60-0.90 0.60-0.90
Cr (%) 0.4-0.80 0.90-1.20
Ni (%) 0.70-1.10 1.20-1.50
P (%) <=0.04 <=0.025
S (%) <=0.05 <=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 (Part 3) 635M15 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 3) 635M15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
EN 10084 10NiCr5-4
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
Can BS 970 (Part 3) 635M15 Be Substituted With EN 10084 10NiCr5-4?
BS 970 (Part 3) 635M15 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.
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BS 970 (Part 3) 635M15
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EN 10084 10NiCr5-4
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 635M15 and EN 10084 10NiCr5-4?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 635M15 be substituted with EN 10084 10NiCr5-4?
BS 970 (Part 3) 635M15 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.