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BS 970 EN12 vs BS 970 EN14B

Related Material — 63.9% match based on chemical composition and mechanical property overlap.

BS 970 EN12 (BS 970:1955) and BS 970 EN14B (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 EN14B is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable hardened and tempered for 40/50 (q) and 45/55 (r) tons/sq in according to ruling section.. BS 970 EN12 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN14B is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN12 vs BS 970 EN14B is a 76.9% match. As per mechanical properties, the match is 38%. Combined, this makes them a related material overall at 63.9%.

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
76.9%
MECHANICAL MATCH
38%
OVERALL
63.9%
Specifications
Property BS 970 EN12 BS 970 EN14B
Standard BS 970:1955 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.30-0.45 0.20-0.30
Si (%) 0.10-0.35 0.10-0.35
Mn (%) <=1.50 1.30-1.70
Ni (%) 0.60-1.00 <=0.40
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 EN14B
Tensile Strength ≥541 MPa (35 tons/sq in, converted) ≥510 MPa (33 tons/sq in, converted)
Yield Strength ≥309 MPa (20 tons/sq in, converted) ≥355 MPa (23 tons/sq in, converted)
Elongation ≥20% ≥20%
Hardness 152-207 HB 170-223 HB
Condition Normalised, ruling section 6 in (lowest-strength condition of the standard) Normalised, ruling section 5 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 EN14B
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable hardened and tempered for 40/50 (Q) and 45/55 (R) tons/sq in according to ruling section.
Can BS 970 EN12 Be Substituted With BS 970 EN14B?
BS 970 EN12 and BS 970 EN14B share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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BS 970 EN12
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BS 970 EN14B
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Frequently Asked Questions
What is the difference between BS 970 EN12 and BS 970 EN14B?
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 EN14B?
BS 970 EN12 and BS 970 EN14B share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.