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BS 970 (Part 1) 420S29 vs BS 970 (Part 1) 410S21

Strong Match — 92.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 420S29 (BS 970 (Part 1):1991) and BS 970 (Part 1) 410S21 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 420S29 is typically used for ferritic and martensitic stainless and heat resisting steel (section five), while BS 970 (Part 1) 410S21 is commonly used for ferritic and martensitic stainless and heat resisting steel (section five). BS 970 (Part 1) 420S29 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 (Part 1) 420S29 vs BS 970 (Part 1) 410S21 is a 92.4% 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 92.4%.

Frequently Compared With BS 970 (Part 1) 420S29:
IS 1570 (Part 7) 12Cr13H ASTM A959 .- EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
92.4%
MECHANICAL MATCH
No shared data
OVERALL
92.4%
Specifications
Property BS 970 (Part 1) 420S29 BS 970 (Part 1) 410S21
Standard BS 970 (Part 1):1991 BS 970 (Part 1):1991
Category Stainless Steel Stainless Steel
C (%) 0.14-0.20 0.09-0.15
Si (%) <=1.0 <=1.0
Mn (%) <=1.0 <=1.0
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Cr (%) 11.5-13.5 11.5-13.5
Ni (%) <=1.00 <=1.00
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 1) 420S29
Ferritic and martensitic stainless and heat resisting steel (section five)
BS 970 (Part 1) 410S21
Ferritic and martensitic stainless and heat resisting steel (section five)
Can BS 970 (Part 1) 420S29 Be Substituted With BS 970 (Part 1) 410S21?
BS 970 (Part 1) 420S29 and BS 970 (Part 1) 410S21 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 410S21 is often considered as a substitute for BS 970 (Part 1) 420S29 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 (Part 1) 420S29
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BS 970 (Part 1) 410S21
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 420S29 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 (Part 1) 420S29 be substituted with BS 970 (Part 1) 410S21?
BS 970 (Part 1) 420S29 and BS 970 (Part 1) 410S21 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 410S21 is often considered as a substitute for BS 970 (Part 1) 420S29 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.