Post Stock Login Register

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

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

BS 970 (Part 3) 304S11 (BS 970 (Part 3):1991) and ASTM A276/A276M S30403 (ASTM A276/A276M:2017) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 3) 304S11 is typically 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), while ASTM A276/A276M S30403 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished). BS 970 (Part 3) 304S11 is defined under British Standards (BS), originating from United Kingdom, while ASTM A276/A276M S30403 is defined under ASTM International, originating from United States.

As per chemical composition, BS 970 (Part 3) 304S11 vs ASTM A276/A276M S30403 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 BS 970 (Part 3) 304S11:
GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4301 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 201L
Match Breakdown
CHEMISTRY MATCH
92.4%
MECHANICAL MATCH
No shared data
OVERALL
92.4%
Specifications
Property BS 970 (Part 3) 304S11 ASTM A276/A276M S30403
Standard BS 970 (Part 3):1991 ASTM A276/A276M:2017
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
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 18.0-20.0
Ni (%) 9.0-12.0 8.0-12.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 3) 304S11 ASTM A276/A276M S30403
Tensile Strength Not specified >=485 MPa
Yield Strength Not specified >=170 MPa
Elongation Not specified >=40%
Condition Not specified Condition A (Annealed), hot-finished, all sizes (first row printed)
Typical Applications
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)
ASTM A276/A276M S30403
Stainless steel bars and shapes (hot-finished or cold-finished)
Can BS 970 (Part 3) 304S11 Be Substituted With ASTM A276/A276M S30403?
BS 970 (Part 3) 304S11 and ASTM A276/A276M S30403 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30403 is often considered as a substitute for BS 970 (Part 3) 304S11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
BS 970 (Part 3) 304S11
0 active listings and RFQs →
ASTM A276/A276M S30403
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 3) 304S11 and ASTM A276/A276M S30403?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 304S11 be substituted with ASTM A276/A276M S30403?
BS 970 (Part 3) 304S11 and ASTM A276/A276M S30403 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30403 is often considered as a substitute for BS 970 (Part 3) 304S11 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.