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BS 970 EN56BM vs ASTM A959 .-

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 EN56BM (BS 970:1955) and ASTM A959 .- (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN56BM is defined under British Standards (BS), originating from United Kingdom, while ASTM A959 .- is defined under ASTM International, originating from United States.

As per chemical composition, BS 970 EN56BM vs ASTM A959 .- is a 56.5% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 EN56BM:
GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr12MoH GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH GOST 5632 06Kh23N28 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
56.5%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN56BM ASTM A959 .-
Standard BS 970:1955 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) 0.12-0.18 <=0.030
Si (%) <=1.00 <=1.00
Mn (%) <=1.50 <=1.00
Ni (%) <=1.00 <=0.50
Cr (%) 12.0-14.0 18.0-20.0
Mo (%) <=0.60 Not specified
S (%) <=0.75 <=0.030
Se (%) <=0.60 Not specified
Zr (%) <=0.60 Not specified
Pb (%) <=0.35 Not specified
P (%) <=0.045 <=0.040
Cb (%) Not specified 0.10-0.60
N (%) Not specified <=0.030
Ti (%) Not specified 0.07-0.30
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 EN56BM ASTM A959 .-
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Elongation ≥20% Not specified
Hardness 152-207 HB Not specified
Condition Hardened and tempered P, ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN56BM
Not documented
ASTM A959 .-
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can BS 970 EN56BM Be Substituted With ASTM A959 .-?
BS 970 EN56BM and ASTM A959 .- 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 EN56BM
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ASTM A959 .-
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Frequently Asked Questions
What is the difference between BS 970 EN56BM and ASTM A959 .-?
BS 970 EN56BM specifies Mo, Se, Zr, Pb which are not specified for ASTM A959 .-. ASTM A959 .- specifies Cb, N, Ti which are not specified for BS 970 EN56BM.
Can BS 970 EN56BM be substituted with ASTM A959 .-?
BS 970 EN56BM and ASTM A959 .- 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.