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ASTM A959 29-4 vs ASTM A240/A240M S44800

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A959 29-4 (ASTM A959:2011) and ASTM A240/A240M S44800 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 29-4 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S44800 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 29-4 is defined under ASTM International, originating from United States, while ASTM A240/A240M S44800 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 29-4 vs ASTM A240/A240M S44800 is a 91.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With ASTM A959 29-4:
ASTM A959 29-4C ASTM A959 .- ASTM A959 25-4-4 GOST 5632 06Kh23N28 ASTM A959 29-4-2 EN 10088-1 1.4006 EN 10088-1 1.4401 EN 10088-1 1.4845 GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoH EN 10088-1 1.4301 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Match Breakdown
CHEMISTRY MATCH
91.7%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property ASTM A959 29-4 ASTM A240/A240M S44800
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.010 <=0.010
Cr (%) 28.0-30.0 28.0-30.0
Cu (%) <=0.15 <=0.15
Mn (%) <=0.30 <=0.30
Mo (%) 3.5-4.2 3.5-4.2
N (%) <=0.020 <=0.020
Ni (%) <=0.15 2.00-2.50
P (%) <=0.025 <=0.025
S (%) <=0.020 <=0.020
Si (%) <=0.20 <=0.20
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 29-4 ASTM A240/A240M S44800
Tensile Strength Not specified >=550 MPa
Yield Strength Not specified >=415 MPa
Elongation Not specified >=20%
Hardness Not specified <=223 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 29-4
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S44800
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 29-4 Be Substituted With ASTM A240/A240M S44800?
ASTM A959 29-4 and ASTM A240/A240M S44800 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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ASTM A959 29-4
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ASTM A240/A240M S44800
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Frequently Asked Questions
What is the difference between ASTM A959 29-4 and ASTM A240/A240M S44800?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 29-4 be substituted with ASTM A240/A240M S44800?
ASTM A959 29-4 and ASTM A240/A240M S44800 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.