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BS 970 (Part 3) 835M15 vs BS 970 EN39B

Strong Match — 89.8% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 835M15 (BS 970 (Part 3):1991) and BS 970 EN39B (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 835M15 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN39B is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 3) 835M15 vs BS 970 EN39B is a 89.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 89.8%.

Frequently Compared With BS 970 (Part 3) 835M15:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Mo6 IS 11169 (Part 1) 10Ni5Cr4 UNI 11234 100Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
89.8%
MECHANICAL MATCH
No shared data
OVERALL
89.8%
Specifications
Property BS 970 (Part 3) 835M15 BS 970 EN39B
Standard BS 970 (Part 3):1991 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.12-0.18 0.12-0.18
Si (%) 0.10-0.40 0.10-0.35
Mn (%) 0.25-0.50 <=0.50
Cr (%) 1.00-1.40 1.00-1.40
Mo (%) 0.15-0.30 0.15-0.35
Ni (%) 3.90-4.30 3.80-4.50
P (%) <=0.04 <=0.050
S (%) <=0.05 <=0.050
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) 835M15 BS 970 EN39B
Tensile Strength Not specified ≥1313 MPa (85 tons/sq in, converted)
Elongation Not specified ≥12%
Condition Not specified Core, after heat treatment (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 3) 835M15
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
BS 970 EN39B
Not documented
Can BS 970 (Part 3) 835M15 Be Substituted With BS 970 EN39B?
BS 970 (Part 3) 835M15 and BS 970 EN39B overlap closely enough on chemistry and mechanical properties that BS 970 EN39B is often considered as a substitute for BS 970 (Part 3) 835M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
BS 970 (Part 3) 835M15
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BS 970 EN39B
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Frequently Asked Questions
What is the difference between BS 970 (Part 3) 835M15 and BS 970 EN39B?
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) 835M15 be substituted with BS 970 EN39B?
BS 970 (Part 3) 835M15 and BS 970 EN39B overlap closely enough on chemistry and mechanical properties that BS 970 EN39B is often considered as a substitute for BS 970 (Part 3) 835M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.