ASTM A240 UNS S31803 Plate

1. Standard: ASTM A240、ASME SA240
2. Thickness: 0.3mm - 50mm
3. Width: 1000 - 3000mm
4. Length: Customer's Requirement

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Product Introduction

ASTM A240 UNS S31803 Plate is a duplex stainless steel with excellent corrosion resistance, high strength and good weldability. With a PREN value above 34, its pitting resistance is lower than super duplex grades, but higher than most austenitic steels. ASTM A240 GR S31803 coil also has good resistance to corrosion cracking. It also has good ductility at ambient and sub-zero temperatures. Our supplier strictly manufactures according to ASTM A240 standards, and our company has 15+ export experience. Contact us for more information and free quotes!

ASTM A240 UNS S31803 Duplex Stainless Steel Plate Applications:

Chemical Engineering Components
Oil and Gas Industry Components
Pressure Vessels and Offshore Drilling Platforms
Automotive Products
Mining Industry
Pulp and Paper Industry
Marine Utilities
Oil and Gas Exploration

ASTM A240 UNS S31803 Duplex Stainless Steel Plate Suppliers

ASTM A240 S31803 Duplex Steel Plate Specifications

Specifications	ASTM A240 , ASME SA240
Thickness	0.3mm-50mm
Sizes	1000 mm x 2000 mm, 1000 mm x 2000 mm, 122 0 mm x 2440 mm, 1250mm x 2500mm, 1500mm x 3000mm to 6000mm, 2000mm x 4000mm to 6000mm, 1500 mm x 3000 mm, 2000 mm x 2000 mm, 2000 mm x 4000 mm, 2m, 2.44m, 3m, 36" X 120" or 48" X 144", 4' x 8', Cut to size available
Surface	BA, 2B, 2D, NO.1, NO.4, NO.8, 8K, checkered, sandblast, brush, mirror, embossed, hairline, etching, etc
MOQ	No Minimum Order Quantity
Test Report	Raw material certificate 100% radiographic inspection report Third-party inspection report, etc. PED certificate
Supplied Forms	Fittings, Flanges Pipe, Tube Plate, Sheet, Strip, Coil Round Bar
Sample	Provide free samples
Delivery time	5-35 days

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Duplex S31803 Chemical Composition

Cr	Chromium	22.0 - 23.0%
Ni	Nickel	4.5 - 6.5%
Mn	Manganese	2.0% max
Si	Silicon	1.0% max
P	Phosphorous	0.03% max
S	Sulfur	0.02% max
C	Carbon	0.03% max
N	Nitrogen	0.1 - 0.2%
Mo	Molybdenum	3.0 - 3.5%
Fe	Iron	Balance

UNS S31803 Mechanical Properties

Grade	Tensile Str	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
	(MPa) min
				Rockwell C (HR C)	Brinell (HB)
2205	621	448	25	31 max	293 max

ASTM A240 GR S31803 UNS Plate Surface Finish

Surface Finish	Thickness (mm)	Width (mm)
1D – Hot rolled, heat treated, pickled Plate & Sheet	2.4–12.7	max. 2032
2B – Cold rolled, heat treated, pickled, skin passed Plate	0.25–8.0	max. 2032
2D – Cold rolled, heat treated, pickled Plate & Sheet	0.4–6.35	max. 1524
2R – Cold-rolled, bright-annealed	0.05–1.50	3–649
2E – Cold rolled, heat treated, mechanically descaled Sheet	0.4–8.0	max. 2032
2R – Cold rolled, bright annealed Plate Sheet	0.25–3.5	max. 1524
2H – Work hardened	0.4–6.35	max. 1524
Polished, brushed	0.5–4.0	max. 1524
Coil Sheet Plate Strip	0.30–3.5	max. 1,524

UNS S31803 Equivalent Material

ASTM A240 S31803 plate is also known as F51 or 1.4462 and meets multiple other standards such as EN 1.4462, X2CrNiMoN22-5-3 and SS 2377.

ASTM A240 UNS S31803 Plate Manufacturing Process

Raw Material Pretreatment
Hot rolling process: including three stages of rough rolling, intermediate rolling and finishing rolling. During the hot rolling process, the heating temperature should be kept above 1100°C.
Steel Plate Cooling
Cutting
Inspection
Packaging and Shipping