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ASTM A959 25-4-4 vs ASTM A240/A240M S32520

Close Alternative — 70.8% match based on chemical composition and mechanical property overlap.

ASTM A959 25-4-4 (ASTM A959:2011) and ASTM A240/A240M S32520 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 25-4-4 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S32520 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 25-4-4 is defined under ASTM International, originating from United States, while ASTM A240/A240M S32520 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 25-4-4 vs ASTM A240/A240M S32520 is a 70.8% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 70.8%.

Frequently Compared With ASTM A959 25-4-4:
ASTM A959 29-4 ASTM A959 2507 ASTM A959 26-3-3 ASTM A959 29-4C ASTM A959 29-4-2 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 ASTM A959 .- GB/T 3280 06Cr19Ni10 EN 10088-1 1.4401
Match Breakdown
CHEMISTRY MATCH
70.8%
MECHANICAL MATCH
No shared data
OVERALL
70.8%
Specifications
Property ASTM A959 25-4-4 ASTM A240/A240M S32520
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.025 <=0.030
Cr (%) 24.5-26.0 24.0-26.0
Mn (%) <=1.00 <=1.50
Mo (%) 3.5-4.5 3.0-4.0
N (%) <=0.035 0.20-0.35
Ni (%) 3.5-4.5 5.5-8.0
P (%) <=0.040 <=0.035
S (%) <=0.030 <=0.020
Si (%) <=0.75 <=0.80
Cu (%) Not specified 0.50-2.00
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 25-4-4 ASTM A240/A240M S32520
Tensile Strength Not specified >=770 MPa
Yield Strength Not specified >=550 MPa
Elongation Not specified >=25%
Hardness Not specified <=310 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 25-4-4
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S32520
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 25-4-4 Be Substituted With ASTM A240/A240M S32520?
ASTM A959 25-4-4 and ASTM A240/A240M S32520 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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ASTM A959 25-4-4
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ASTM A240/A240M S32520
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Frequently Asked Questions
What is the difference between ASTM A959 25-4-4 and ASTM A240/A240M S32520?
ASTM A240/A240M S32520 specifies Cu which is not specified for ASTM A959 25-4-4.
Can ASTM A959 25-4-4 be substituted with ASTM A240/A240M S32520?
ASTM A959 25-4-4 and ASTM A240/A240M S32520 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.