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ASTM A276/A276M S43100 vs BS 970 (Part 1) 431S29

Strong Match — 86.3% match based on chemical composition and mechanical property overlap.

ASTM A276/A276M S43100 (ASTM A276/A276M:2017) and BS 970 (Part 1) 431S29 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Stainless Steel category. ASTM A276/A276M S43100 is typically used for stainless steel bars and shapes (hot-finished or cold-finished), while BS 970 (Part 1) 431S29 is commonly used for stainless and heat resisting steel for mechanical and allied engineering purposes (table 13).. ASTM A276/A276M S43100 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 431S29 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A276/A276M S43100 vs BS 970 (Part 1) 431S29 is a 86.3% 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 86.3%.

Frequently Compared With ASTM A276/A276M S43100:
EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
86.3%
MECHANICAL MATCH
No shared data
OVERALL
86.3%
Specifications
Property ASTM A276/A276M S43100 BS 970 (Part 1) 431S29
Standard ASTM A276/A276M:2017 BS 970 (Part 1):1983
Category Stainless Steel Stainless Steel
C (%) <=0.20 0.12-0.20
Mn (%) <=1.00 <=1.0
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.0
Cr (%) 15.0-17.0 15.0-18.0
Ni (%) 1.25-2.50 2.0-3.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A276/A276M S43100 BS 970 (Part 1) 431S29
Hardness <=285 HB Not specified
Condition Condition A (Annealed), hot-finished or cold-finished, all sizes (first row printed) Not specified
Typical Applications
ASTM A276/A276M S43100
Stainless steel bars and shapes (hot-finished or cold-finished)
BS 970 (Part 1) 431S29
Stainless and heat resisting steel for mechanical and allied engineering purposes (Table 13).
Can ASTM A276/A276M S43100 Be Substituted With BS 970 (Part 1) 431S29?
ASTM A276/A276M S43100 and BS 970 (Part 1) 431S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 431S29 is often considered as a substitute for ASTM A276/A276M S43100 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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ASTM A276/A276M S43100
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BS 970 (Part 1) 431S29
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Frequently Asked Questions
What is the difference between ASTM A276/A276M S43100 and BS 970 (Part 1) 431S29?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A276/A276M S43100 be substituted with BS 970 (Part 1) 431S29?
ASTM A276/A276M S43100 and BS 970 (Part 1) 431S29 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 431S29 is often considered as a substitute for ASTM A276/A276M S43100 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.