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BS 970 (Part 1) 303S42 vs ASTM A959 .-

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 303S42 (BS 970 (Part 1):1991) and ASTM A959 .- (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 303S42 is typically used for austenitic stainless and heat resisting steel (section five), while ASTM A959 .- is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). BS 970 (Part 1) 303S42 is defined under British Standards (BS), originating from United Kingdom, while ASTM A959 .- is defined under ASTM International, originating from United States.

As per chemical composition, BS 970 (Part 1) 303S42 vs ASTM A959 .- is a 59.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 1) 303S42:
ASTM A959 16-8-2H EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH 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) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
59.1%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 (Part 1) 303S42 ASTM A959 .-
Standard BS 970 (Part 1):1991 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.12 <=0.030
Si (%) <=1.0 <=1.00
Mn (%) <=2.0 <=1.00
P (%) <=0.060 <=0.040
S (%) <=0.060 <=0.030
Cr (%) 17.0-19.0 18.0-20.0
Mo (%) <=1.00 Not specified
Ni (%) 8.0-10.0 <=0.50
Cb (%) Not specified 0.10-0.60
N (%) Not specified <=0.030
Ti (%) Not specified 0.07-0.30
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) 303S42 ASTM A959 .-
Condition Softened, 1000-1100 deg C Not specified
Tensile Strength 510 MPa min Not specified
Yield Strength 190 MPa min (0.2% proof) Not specified
Elongation 40 % min Not specified
Hardness 183 HB max Not specified
Typical Applications
BS 970 (Part 1) 303S42
Austenitic stainless and heat resisting steel (section five)
ASTM A959 .-
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can BS 970 (Part 1) 303S42 Be Substituted With ASTM A959 .-?
BS 970 (Part 1) 303S42 and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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BS 970 (Part 1) 303S42
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ASTM A959 .-
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 303S42 and ASTM A959 .-?
BS 970 (Part 1) 303S42 specifies Mo which is not specified for ASTM A959 .-. ASTM A959 .- specifies Cb, N, Ti which are not specified for BS 970 (Part 1) 303S42.
Can BS 970 (Part 1) 303S42 be substituted with ASTM A959 .-?
BS 970 (Part 1) 303S42 and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.