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BS 970 EN51 vs BS 970 EN57

Related Material — 68% match based on chemical composition and mechanical property overlap.

BS 970 EN51 (BS 970:1955) and BS 970 EN57 (BS 970:1955) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN51 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars., while BS 970 EN57 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 55 tons/sq in min.. BS 970 EN51 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN57 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN51 vs BS 970 EN57 is a 68% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 68%.

Frequently Compared With BS 970 EN51:
ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
68%
MECHANICAL MATCH
No shared data
OVERALL
68%
Specifications
Property BS 970 EN51 BS 970 EN57
Standard BS 970:1955 BS 970:1955
Category Stainless Steel Stainless Steel
C (%) 0.25-0.35 <=0.25
Si (%) 0.10-0.35 0.10-1.00
Mn (%) 0.35-0.75 <=1.00
Ni (%) 2.75-3.25 1.00-3.00
Cr (%) <=0.30 15.5-20.0
S (%) <=0.050 <=0.045
P (%) <=0.050 <=0.045
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 EN51 BS 970 EN57
Tensile Strength Not specified ≥849 MPa (55 tons/sq in, converted)
Yield Strength Not specified ≥680 MPa (44 tons/sq in, converted)
Elongation Not specified ≥15%
Hardness Not specified 248 HB
Condition Not specified Hardened and tempered (ruling 6), ruling section 6 in (lowest-strength condition of the standard)
Typical Applications
BS 970 EN51
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars.
BS 970 EN57
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 55 tons/sq in min.
Can BS 970 EN51 Be Substituted With BS 970 EN57?
BS 970 EN51 and BS 970 EN57 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 EN51
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BS 970 EN57
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Frequently Asked Questions
What is the difference between BS 970 EN51 and BS 970 EN57?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN51 be substituted with BS 970 EN57?
BS 970 EN51 and BS 970 EN57 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.