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BS 970 (Part 1) 304S11 vs ASTM A959 S30430

Strong Match — 91% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 304S11 (BS 970 (Part 1):1991) and ASTM A959 S30430 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 304S11 is typically used for austenitic stainless and heat resisting steel (section five), while ASTM A959 S30430 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). BS 970 (Part 1) 304S11 is defined under British Standards (BS), originating from United Kingdom, while ASTM A959 S30430 is defined under ASTM International, originating from United States.

As per chemical composition, BS 970 (Part 1) 304S11 vs ASTM A959 S30430 is a 91% 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%.

Frequently Compared With BS 970 (Part 1) 304S11:
EN 10088-1 1.4301 EN 10088-1 1.4845 ASTM A959 201L ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
91%
MECHANICAL MATCH
No shared data
OVERALL
91%
Specifications
Property BS 970 (Part 1) 304S11 ASTM A959 S30430
Standard BS 970 (Part 1):1991 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.03
Si (%) <=1.0 <=1.00
Mn (%) <=2.0 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Cr (%) 17.0-19.0 17.0-19.0
Ni (%) 9.0-12.0 8.0-10.0
Cu (%) Not specified 3.0-4.0
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 (Part 1) 304S11 ASTM A959 S30430
Condition Softened, 1000-1100 deg C Not specified
Tensile Strength 480 MPa min Not specified
Yield Strength 180 MPa min (0.2% proof) Not specified
Elongation 40 % min Not specified
Hardness 183 HB max Not specified
Typical Applications
BS 970 (Part 1) 304S11
Austenitic stainless and heat resisting steel (section five)
ASTM A959 S30430
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can BS 970 (Part 1) 304S11 Be Substituted With ASTM A959 S30430?
BS 970 (Part 1) 304S11 and ASTM A959 S30430 overlap closely enough on chemistry and mechanical properties that ASTM A959 S30430 is often considered as a substitute for BS 970 (Part 1) 304S11 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) 304S11
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ASTM A959 S30430
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 304S11 and ASTM A959 S30430?
ASTM A959 S30430 specifies Cu which is not specified for BS 970 (Part 1) 304S11.
Can BS 970 (Part 1) 304S11 be substituted with ASTM A959 S30430?
BS 970 (Part 1) 304S11 and ASTM A959 S30430 overlap closely enough on chemistry and mechanical properties that ASTM A959 S30430 is often considered as a substitute for BS 970 (Part 1) 304S11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.