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ASTM A276/A276M S30403 vs BS 970 (Part 3) 304S11

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

ASTM A276/A276M S30403 (ASTM A276/A276M:2017) and BS 970 (Part 3) 304S11 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Stainless Steel category. ASTM A276/A276M S30403 is typically used for stainless steel bars and shapes (hot-finished or cold-finished), while BS 970 (Part 3) 304S11 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (table 18). ASTM A276/A276M S30403 is defined under ASTM International, originating from United States, while BS 970 (Part 3) 304S11 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A276/A276M S30403 vs BS 970 (Part 3) 304S11 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 ASTM A276/A276M S30403:
EN 10088-1 1.4401 GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- GOST 5632 08X18H10 EN 10088-1 1.4301 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
92.4%
MECHANICAL MATCH
No shared data
OVERALL
92.4%
Specifications
Property ASTM A276/A276M S30403 BS 970 (Part 3) 304S11
Standard ASTM A276/A276M:2017 BS 970 (Part 3):1991
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Mn (%) <=2.00 <=2.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.0
Cr (%) 18.0-20.0 17.0-19.0
Ni (%) 8.0-12.0 9.0-12.0
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 S30403 BS 970 (Part 3) 304S11
Tensile Strength >=485 MPa Not specified
Yield Strength >=170 MPa Not specified
Elongation >=40% Not specified
Condition Condition A (Annealed), hot-finished, all sizes (first row printed) Not specified
Typical Applications
ASTM A276/A276M S30403
Stainless steel bars and shapes (hot-finished or cold-finished)
BS 970 (Part 3) 304S11
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; austenitic stainless and heat resisting steel (Table 18)
Can ASTM A276/A276M S30403 Be Substituted With BS 970 (Part 3) 304S11?
ASTM A276/A276M S30403 and BS 970 (Part 3) 304S11 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 304S11 is often considered as a substitute for ASTM A276/A276M S30403 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 S30403
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BS 970 (Part 3) 304S11
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Frequently Asked Questions
What is the difference between ASTM A276/A276M S30403 and BS 970 (Part 3) 304S11?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A276/A276M S30403 be substituted with BS 970 (Part 3) 304S11?
ASTM A276/A276M S30403 and BS 970 (Part 3) 304S11 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 304S11 is often considered as a substitute for ASTM A276/A276M S30403 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.