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BS 970 (Part 1) 835M30 vs BS 970 EN30B

Strong Match — 86.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 835M30 (BS 970 (Part 1):1983) and BS 970 EN30B (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 835M30 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN30B is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 835M30 vs BS 970 EN30B is a 86.4% 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 86.4%.

Frequently Compared With BS 970 (Part 1) 835M30:
IS 1570 (Part 4) 10Mo6 IS 4367 10Cr9Mo10 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 11169 (Part 1) 10Ni5Cr4 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6
Match Breakdown
CHEMISTRY MATCH
86.4%
MECHANICAL MATCH
No shared data
OVERALL
86.4%
Specifications
Property BS 970 (Part 1) 835M30 BS 970 EN30B
Standard BS 970 (Part 1):1983 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.26-0.34 0.26-0.34
Mn (%) 0.45-0.70 0.40-0.60
P (%) <=0.025 <=0.050
S (%) <=0.025 <=0.050
Cr (%) 1.10-1.40 1.10-1.40
Mo (%) 0.20-0.35 0.20-0.40
Ni (%) 3.90-4.30 3.90-4.30
Si (%) Not specified 0.10-0.35
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) 835M30 BS 970 EN30B
Tensile Strength Not specified ≥1544 MPa (100 tons/sq in, converted)
Yield Strength Not specified ≥1313 MPa (85 tons/sq in, converted)
Elongation Not specified ≥10%
Hardness Not specified 444 HB
Condition Not specified Air hardened and tempered (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 1) 835M30
Through hardening steel for mechanical and allied engineering purposes; supplied in the hardened and tempered conditions of Table 6.
BS 970 EN30B
Not documented
Key Differences
Can BS 970 (Part 1) 835M30 Be Substituted With BS 970 EN30B?
BS 970 (Part 1) 835M30 and BS 970 EN30B overlap closely enough on chemistry and mechanical properties that BS 970 EN30B is often considered as a substitute for BS 970 (Part 1) 835M30 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 1) 835M30
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BS 970 EN30B
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 835M30 and BS 970 EN30B?
BS 970 EN30B specifies Si which is not specified for BS 970 (Part 1) 835M30.
Can BS 970 (Part 1) 835M30 be substituted with BS 970 EN30B?
BS 970 (Part 1) 835M30 and BS 970 EN30B overlap closely enough on chemistry and mechanical properties that BS 970 EN30B is often considered as a substitute for BS 970 (Part 1) 835M30 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.