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BS 970 EN12 vs BS 970 EN12C

Strong Match — 92.9% match based on chemical composition and mechanical property overlap.

BS 970 EN12 (BS 970:1955) and BS 970 EN12C (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN12 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN12C is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN12 vs BS 970 EN12C is a 89.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 92.9%.

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
89.3%
MECHANICAL MATCH
100%
OVERALL
92.9%
Specifications
Property BS 970 EN12 BS 970 EN12C
Standard BS 970:1955 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.30-0.45 0.40-0.45
Si (%) 0.10-0.35 0.10-0.35
Mn (%) <=1.50 0.70-0.90
Ni (%) 0.60-1.00 0.60-1.00
S (%) <=0.050 <=0.050
P (%) <=0.050 <=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 EN12 BS 970 EN12C
Tensile Strength ≥541 MPa (35 tons/sq in, converted) ≥541 MPa (35 tons/sq in, converted)
Yield Strength ≥309 MPa (20 tons/sq in, converted) ≥309 MPa (20 tons/sq in, converted)
Elongation ≥20% ≥20%
Hardness 152-207 HB 152-207 HB
Condition Normalised, ruling section 6 in (lowest-strength condition of the standard) Normalised, ruling section 6 in (lowest-strength condition of the standard)
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 EN12C
Not documented
Can BS 970 EN12 Be Substituted With BS 970 EN12C?
BS 970 EN12 and BS 970 EN12C overlap closely enough on chemistry and mechanical properties that BS 970 EN12C is often considered as a substitute for BS 970 EN12 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 EN12
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BS 970 EN12C
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Frequently Asked Questions
What is the difference between BS 970 EN12 and BS 970 EN12C?
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 EN12C?
BS 970 EN12 and BS 970 EN12C overlap closely enough on chemistry and mechanical properties that BS 970 EN12C is often considered as a substitute for BS 970 EN12 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.