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BS 970 EN12 vs BS 970 EN10

Close Alternative — 79.8% match based on chemical composition and mechanical property overlap.

BS 970 EN12 (BS 970:1955) and BS 970 EN10 (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN12 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable in hardened and tempered condition for tensile range 40/50 (q) tons/sq in; purchaser to state normalised or hardened and tempered., while BS 970 EN10 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. used to a limited extent for special applications; supplied to a specified composition.. BS 970 EN12 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN12 vs BS 970 EN10 is a 79.8% 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 79.8%.

Frequently Compared With BS 970 EN12:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
79.8%
MECHANICAL MATCH
No shared data
OVERALL
79.8%
Specifications
Property BS 970 EN12 BS 970 EN10
Standard BS 970:1955 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.30-0.45 0.50-0.60
Si (%) 0.10-0.35 0.05-0.35
Mn (%) <=1.50 0.50-0.80
Ni (%) 0.60-1.00 0.50-0.80
S (%) <=0.050 <=0.060
P (%) <=0.050 <=0.060
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 EN12 BS 970 EN10
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Yield Strength ≥309 MPa (20 tons/sq in, converted) Not specified
Elongation ≥20% Not specified
Hardness 152-207 HB Not specified
Condition Normalised, ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN12
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable in hardened and tempered condition for tensile range 40/50 (Q) tons/sq in; purchaser to state normalised or hardened and tempered.
BS 970 EN10
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Used to a limited extent for special applications; supplied to a specified composition.
Can BS 970 EN12 Be Substituted With BS 970 EN10?
BS 970 EN12 and BS 970 EN10 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 EN12
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BS 970 EN10
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Frequently Asked Questions
What is the difference between BS 970 EN12 and BS 970 EN10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN12 be substituted with BS 970 EN10?
BS 970 EN12 and BS 970 EN10 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.