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

Strong Match — 94.6% match based on chemical composition and mechanical property overlap.

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

As per chemical composition, ASTM A959 304L vs BS 970 (Part 1) 304S11 is a 94.6% 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 94.6%.

Frequently Compared With ASTM A959 304L:
EN 10088-1 1.4301 GOST 5632 08X18H10 EN 10088-1 1.4845 ASTM A959 201L ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
94.6%
MECHANICAL MATCH
No shared data
OVERALL
94.6%
Specifications
Property ASTM A959 304L BS 970 (Part 1) 304S11
Standard ASTM A959:2011 BS 970 (Part 1):1991
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Cr (%) 17.5-19.5 17.0-19.0
Mn (%) <=2.00 <=2.0
Ni (%) 8.0-12.0 9.0-12.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A959 304L BS 970 (Part 1) 304S11
Condition Not specified Softened, 1000-1100 deg C
Tensile Strength Not specified 480 MPa min
Yield Strength Not specified 180 MPa min (0.2% proof)
Elongation Not specified 40 % min
Hardness Not specified 183 HB max
Typical Applications
ASTM A959 304L
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
BS 970 (Part 1) 304S11
Austenitic stainless and heat resisting steel (section five)
Can ASTM A959 304L Be Substituted With BS 970 (Part 1) 304S11?
ASTM A959 304L and BS 970 (Part 1) 304S11 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 304S11 is often considered as a substitute for ASTM A959 304L 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 A959 304L
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BS 970 (Part 1) 304S11
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Frequently Asked Questions
What is the difference between ASTM A959 304L and BS 970 (Part 1) 304S11?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 304L be substituted with BS 970 (Part 1) 304S11?
ASTM A959 304L and BS 970 (Part 1) 304S11 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 304S11 is often considered as a substitute for ASTM A959 304L in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.