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Corrosion Resistant ASTM A240 Standard 254 SMO Stainless Steel Plate with High Molybdenum Content

Certification	ISO, AISI, ASTM
Minimum Order Quantity	50 kg
Price	US $3.25-10.85 / kg

Product Details

Model NO.	254smo	Shape	Flat
Technique	Cold Rolled	Surface Treatment	Bright
Specification	12202440, 15003000, 15006000, 20006000mm	Thickness	4mm-100mm
Width	1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm	Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm
Surface	2B, 2D, BA, NO.1, NO.4, NO.8, 8K, Mirror, Checkered, Embossed, Hair Line, Sand Blast, Brush, Etching	Finish	Hot Rolled Plate (HR), Cold Rolled Sheet (CR), 2B, 2D, BA NO(8), SATIN (Met With Plastic Coated)
Density	8.0 G/cm3	Melting Point	1320-1390 °C
Yield Strength	300	Tensile Strength	650
Elongation	35 %
Highlight	Corrosion Resistant Stainless Steel Plate , High Molybdenum Content 254 SMO Plate , ASTM A240 Standard UNS S31254 Plate

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Product Description

ASTM A240 UNS S31254 / 1.4547 / 254 SMO Duplex Stainless Steel Plates & Sheets

Alloy 254 UNS S31254 Plate, also known as 254 SMO Plate, SA 240 UNS S31254 Plate, and SS 254 SMO F44 Plates, represents a premium super austenitic stainless steel solution for demanding industrial applications.

Product Specifications

Specification	Details
Standard	ASTM A240 / ASME SA240
Thickness	4mm - 100mm
Width	1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc.
Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc.
Surface Finish	2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc.
Processing	Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Available Forms	Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange), etc.

Chemical Composition

Element	Content (%)
Nickel (Ni)	17.5 - 18.5
Chromium (Cr)	19.5 - 20.5
Molybdenum (Mo)	6.0 - 6.5
Copper (Cu)	0.5 - 1.0
Nitrogen (N)	0.18 - 0.22
Carbon (C)	0.02 max
Manganese (Mn)	1.0 max
Silicon (Si)	0.08 max
Phosphorus (P)	0.03 max
Sulfur (S)	0.01 max

Mechanical Properties

Property	Value
Density	8.0 g/cm³
Melting Point	1320-1390 °C
Yield Strength (0.2% Offset)	300 MPa
Tensile Strength	650 MPa
Elongation	35%

Equivalent Grades

Standard	Designation
UNS	S31254
Werkstoff Nr.	1.4547
AFNOR	Z1 CNDU 20.18.06Az
EN	X1CrNiMoCuN20-18-7
SIS	2378

Material Characteristics

Alloy 254 SMO is a premium super austenitic stainless steel with low carbon content, alloyed with molybdenum and nitrogen. This composition delivers exceptional resistance to pitting, crevice corrosion, stress corrosion cracking, and corrosion fatigue. The material offers substantially higher strength than common 300 series stainless steels—nearly double—while maintaining high ductility and impact strength.

Corrosion Resistance

Excellent resistance to pitting and crevice corrosion due to high chromium, molybdenum, and nitrogen content
Very low carbon content minimizes risk of carbide precipitation during heating
Superior resistance in chloride-containing environments, suitable for prolonged seawater exposure without crevice corrosion

Industrial Applications