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BS 970 (Part 1) 431S29 vs ASTM A959 205

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 431S29 (BS 970 (Part 1):1991) and ASTM A959 205 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 431S29 is typically used for ferritic and martensitic stainless and heat resisting steel (section five), while ASTM A959 205 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). BS 970 (Part 1) 431S29 is defined under British Standards (BS), originating from United Kingdom, while ASTM A959 205 is defined under ASTM International, originating from United States.

As per chemical composition, BS 970 (Part 1) 431S29 vs ASTM A959 205 is a 72.3% 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 69.9%.

Frequently Compared With BS 970 (Part 1) 431S29:
IS 1570 (Part 7) 11Cr17Ni13W3TiH GOST 5632 08X18H10 EN 10088-1 1.4401 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- EN 10088-1 1.4006 EN 10088-1 1.4301 GOST 5632 06Kh23N28
Match Breakdown
CHEMISTRY MATCH
72.3%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 (Part 1) 431S29 ASTM A959 205
Standard BS 970 (Part 1):1991 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) 0.12-0.20 0.12-0.25
Si (%) <=1.0 <=1.00
Mn (%) <=1.0 14.0-15.0
P (%) <=0.040 <=0.060
S (%) <=0.030 <=0.030
Cr (%) 15.0-18.0 16.5-18.0
Ni (%) 2.0-3.0 1.00-1.75
N (%) Not specified 0.32-0.40
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) 431S29
Ferritic and martensitic stainless and heat resisting steel (section five)
ASTM A959 205
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can BS 970 (Part 1) 431S29 Be Substituted With ASTM A959 205?
BS 970 (Part 1) 431S29 and ASTM A959 205 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 (Part 1) 431S29
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ASTM A959 205
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 431S29 and ASTM A959 205?
ASTM A959 205 specifies N which is not specified for BS 970 (Part 1) 431S29.
Can BS 970 (Part 1) 431S29 be substituted with ASTM A959 205?
BS 970 (Part 1) 431S29 and ASTM A959 205 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.