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BS 970 EN56D vs BS 970 (Part 1) 410S21

Close Alternative — 84.9% match based on chemical composition and mechanical property overlap.

BS 970 EN56D (BS 970:1955) and BS 970 (Part 1) 410S21 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN56D is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 410S21 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN56D vs BS 970 (Part 1) 410S21 is a 87.1% 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 84.9%.

Frequently Compared With BS 970 EN56D:
EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 ASTM A959 .- GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
87.1%
MECHANICAL MATCH
No shared data
OVERALL
84.9%
Specifications
Property BS 970 EN56D BS 970 (Part 1) 410S21
Standard BS 970:1955 BS 970 (Part 1):1991
Category Stainless Steel Stainless Steel
C (%) 0.25-0.35 0.09-0.15
Si (%) <=1.00 <=1.0
Mn (%) <=1.00 <=1.0
Ni (%) <=1.00 <=1.00
Cr (%) 12.0-14.0 11.5-13.5
S (%) <=0.045 <=0.030
P (%) <=0.045 <=0.040
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 EN56D BS 970 (Part 1) 410S21
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Yield Strength ≥386 MPa (25 tons/sq in, converted) Not specified
Elongation ≥25% Not specified
Hardness 152-207 HB Not specified
Condition Hardened and tempered P (ruling 6), ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN56D
Not documented
BS 970 (Part 1) 410S21
Ferritic and martensitic stainless and heat resisting steel (section five)
Can BS 970 EN56D Be Substituted With BS 970 (Part 1) 410S21?
BS 970 EN56D and BS 970 (Part 1) 410S21 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 EN56D
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BS 970 (Part 1) 410S21
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Frequently Asked Questions
What is the difference between BS 970 EN56D and BS 970 (Part 1) 410S21?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN56D be substituted with BS 970 (Part 1) 410S21?
BS 970 EN56D and BS 970 (Part 1) 410S21 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.