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BS 970 EN56B vs BS 970 (Part 1) 420S29

Strong Match — 91.3% match based on chemical composition and mechanical property overlap.

BS 970 EN56B (BS 970:1955) and BS 970 (Part 1) 420S29 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN56B is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 420S29 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN56B vs BS 970 (Part 1) 420S29 is a 91.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 91.3%.

Frequently Compared With BS 970 EN56B:
GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- GOST 5632 06Kh23N28 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
91.3%
MECHANICAL MATCH
No shared data
OVERALL
91.3%
Specifications
Property BS 970 EN56B BS 970 (Part 1) 420S29
Standard BS 970:1955 BS 970 (Part 1):1991
Category Stainless Steel Stainless Steel
C (%) 0.12-0.18 0.14-0.20
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 EN56B BS 970 (Part 1) 420S29
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 EN56B
Not documented
BS 970 (Part 1) 420S29
Ferritic and martensitic stainless and heat resisting steel (section five)
Can BS 970 EN56B Be Substituted With BS 970 (Part 1) 420S29?
BS 970 EN56B and BS 970 (Part 1) 420S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 420S29 is often considered as a substitute for BS 970 EN56B 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 EN56B
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BS 970 (Part 1) 420S29
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Frequently Asked Questions
What is the difference between BS 970 EN56B and BS 970 (Part 1) 420S29?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN56B be substituted with BS 970 (Part 1) 420S29?
BS 970 EN56B and BS 970 (Part 1) 420S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 420S29 is often considered as a substitute for BS 970 EN56B in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.