What material is 1.4410 equivalent to ASTM?

What Is the ASTM Equivalent of 1.4410 Material?

1.4410 is the European EN material number for super duplex stainless steel, commonly designated UNS S32750 or SAF 2507. It combines a high chromium, molybdenum, and nitrogen content with a duplex microstructure containing both austenite and ferrite.
For ASTM specifications, UNS S32750 is the key material designation to look for. However, the applicable ASTM standard depends on the product form: pipe, tube, plate, sheet, bar, or fittings. A material designation alone does not establish full compliance with a particular ASTM product specification.

 

Is UNS S32750 equivalent to 1.4410?

Yes. UNS S32750 is the widely used US material designation corresponding to EN 1.4410 / X2CrNiMoN25-7-4. The product standard, heat treatment and acceptance requirements must still be verified.

 

Is 1.4410 the same as ASTM A182 F53?

Not in every context. EN 1.4410 and UNS S32750 identify the material grade, while ASTM A182 F53 is the forging designation used for applicable forged products. For pipe, plate and bar, other ASTM product standards may apply.

 

1.4410 Material Equivalent ASTM: Grade and Product Standards

For purchasing purposes, UNS S32750 is the main cross-reference for EN 1.4410, while ASTM A182 F53 is the forging grade designation commonly specified for flanges and other forged components. The ASTM standard must be selected according to the product being purchased.

Standard system	Grade or designation	Description
EN / Werkstoff	1.4410	European material number
EN material name	X2CrNiMoN25-7-4	Chemical composition-based designation
UNS	S32750	Unified Numbering System designation
ASTM A790/A790M	UNS S32750	Seamless and welded duplex stainless steel pipe
ASTM A789/A789M	UNS S32750	Seamless and welded duplex stainless steel tubing
ASTM A240/A240M	UNS S32750	Plate, sheet and strip
ASTM A182/A182M	Grade F53	Forged flanges, fittings, valves and related components
ASTM A479/A479M	UNS S32750	Stainless steel bars and shapes for pressure and general applications
ASTM A815/A815M	WPS32750	Duplex stainless steel wrought fittings

Chemical Composition (EN 1.4410 / UNS S32750)

Element	EN 10088-2 (1.4410)	ASTM A240 (S32750)
C	≤ 0.030	≤ 0.030
Si	≤ 1.00	≤ 0.80
Mn	≤ 2.00	≤ 1.20
P	≤ 0.035	≤ 0.035
S	≤ 0.015	≤ 0.020
Cr	24.0 – 26.0	24.0 – 26.0
Ni	6.0 – 8.0	6.0 – 8.0
Mo	3.0 – 4.5	3.0 – 5.0
N	0.24 – 0.32	0.24 – 0.32
Cu	-	≤ 0.50

⚠️ Note: EN 1.4410 specifies Mo max 4.5 %; ASTM A240 allows up to 5.0 %. When substituting, confirm your MTC falls within the governing standard's limits.

PREN (mid-range): 25 + (3.3 × 4.0) + (16 × 0.28) ≈ 42.5

 

Mechanical Properties (Solution-Annealed)

Property	EN 10088-2 (1.4410)	ASTM A240 (S32750)
Tensile Rm	730 – 1000 MPa	≥ 800 MPa (116 ksi)
Yield Rp0.2	≥ 530 MPa	≥ 550 MPa (80 ksi)
Elongation A50	≥ 25 %	≥ 15 %
Hardness	≤ 32 HRC	≤ 32 HRC (310 HRB)
Density	7.8 g/cm³	7.8 g/cm³
Max. service temp	300 °C	300 °C
Ferrite (annealed)	35 – 55 vol %	35 – 60 vol %

 

What is the difference between 1.4410 and 1.4462?

Compared to EN 1.4462 (UNS S32205, Duplex 2205), EN 1.4410 (UNS S32750, Super Duplex 2507) offers higher strength and superior resistance to chloride-induced corrosion. 1.4410 typically contains 24%–26% chromium, 3%–5% molybdenum, and 0.24%–0.32% nitrogen, whereas 1.4462 contains approximately 21%–23% chromium and 2.5%–3.5% molybdenum. Their respective minimum yield strengths are approximately 550 MPa and 450 MPa. In more demanding corrosive environments, 1.4410 should be selected; however, if the performance of 1.4462 is sufficient for the requirements and offers a lower cost, it may be used instead.

 

Is 1.4410 stainless steel magnetic?

Yes. EN 1.4410 (UNS S32750) is magnetic because its duplex microstructure consists of both ferrite and austenite, typically in a roughly balanced proportion.

 

Can 1.4410 stainless steel be welded?

Yes. EN 1.4410 can be welded using qualified procedures, such as TIG/GTAW (Tungsten Inert Gas/Gas Tungsten Arc Welding), MIG/GMAW (Metal Inert Gas/Gas Metal Arc Welding), or other suitable welding methods. During welding, it is essential to strictly control heat input, interpass temperature, and cooling conditions to maintain the balance of the duplex microstructure and prevent the formation of detrimental intermetallic phases.

 

 Applications of 1.4410 Stainless Steel

Industry	Typical Use
Oil & Gas (offshore)	Subsea flowlines, risers, manifolds, wellhead, separators
Marine / Desalination	Seawater cooling, RO feed, brine concentrators, ship shafts
Chemical Processing	HCl / H₂SO₄ reactors, heat exchangers, evaporators, scrubbers
Power / Mining	Flue-gas desulphurisation, acid slurry pumps
Construction (marine)	Bridge reinforcement in salt atmosphere

 

1.4410 Stainless Steel price per kg

Plates and Sheets:
• General market price: Products with standard dimensions and surface finishes range from $4.00 to $8.50 per kg.
• Thicker-gauge or certified industrial-grade plates: $8.50 – $12.50 per kg.
• Bars, Rounds, and Flats:
• Round and flat bars: Approximately $5.50 – $7.65 per kg.
• Pipes/Tubes:
• Super duplex stainless steel welded or seamless pipes (e.g., 159×4mm specification): $6.80 – $7.80 per kg.

 

Request a 1.4410 / Super Duplex 2507 quotation: Send GNEE your product form, ASTM standard, dimensions, quantity, delivery destination and inspection requirements. The team can then confirm feasibility, lead time and pricing against the actual specification.

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