ASTM A182 Duplex Steel

Duplex & Super Duplex Steel

Duplex 2205 Pipes & Tubes, Plate, Sheet, Coil, Filler Wire, Coil

Super Duplex 2507 Pipe Fittings, Flange, Round Bar, Fasteners

Standard:
AISI ASTM JIS SUS DIN GB
ASTM/ASME:
ASTM/ASME A789/SA789, A240/SA240, A928/SA928, A815/SA815, A182/SA182, A479/SA479, A193/SA193
Grades:
Duplex 2205, ER2209 for Duplex, F51/F60 for Duplex 2205, B8M Class 2 for Duplex 2205, Super Duplex 2507, ER2594, F53/F55, B8M Class 2 etc.
Forms and Products:
Pipes and Tubes, Buttweld Fittings, Flanges, Forged Fittings, Sheets, Plates, and Coils, Bars and Rods, Filler wire, Outlet
Applications:
Oil & Gas Industry, Chemical Processing, Marine Industry, Pulp & Paper Industry, Power Generation, Food & Beverage Industry, Pharmaceutical

Precision Metal is a trusted supplier of Duplex and Super Duplex stainless steels, offering high-quality materials such as pipes and tubes, plates, sheets, coils, fittings, flanges, round bars, and fasteners. With a focus on providing materials that combine strength and corrosion resistance, PMI delivers products that meet the stringent requirements of various industries. Our commitment to quality ensures that clients receive durable and reliable duplex and super duplex stainless steel products for a range of applications.

Duplex steel refers to a type of stainless steel that consists of a mixed microstructure of austenite and ferrite phases, typically in a 50-50 ratio. This combination provides duplex stainless steels with unique properties, making them highly desirable in various industries.

Duplex stainless steel is an alloy that combines the properties of both austenitic and ferritic stainless steels. By balancing these two phases, duplex stainless steel offers a unique combination of strength, corrosion resistance, and durability, making it ideal for demanding applications.

Super Duplex Stainless Steel is a highly alloyed, high-performance stainless steel that is a further development of duplex stainless steel. It has an even greater balance of austenite and ferrite phases and offers enhanced strength and corrosion resistance compared to standard duplex grades. Super Duplex stainless steel is designed to perform in extremely aggressive and corrosive environments, particularly those rich in chlorides, and is commonly used in industries such as oil and gas, chemical processing, and marine engineering.

Duplex & Super Duplex Steel Products We Specialize In

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A815 Duplex & Super Duplex Pipe Fittings

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) stainless steel pipe fittings, ensuring exceptional strength and corrosion resistance in various industrial applications.

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A182 Duplex & Super Duplex Forged Fittings

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) Socket weld & Threaded fittings, featuring a unique microstructure that combines austenitic and ferritic phases, which enhances strength.

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A182 Duplex & Super Duplex Flanges

ADuplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) flanges, which are designed to provide superior mechanical properties, enhanced resistance to pitting and crevice corrosion

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A479 Duplex & Super Duplex Round Bar

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) round bars, offering a unique combination of strength and ductility that enhances their performance in demanding environments.

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A789 Duplex & Super Duplex Pipe & Tube

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) pipes and tubes, known for their exceptional strength-to-weight ratio and excellent resistance to pitting and crevice corrosion.

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A240 Duplex & Super Duplex Plate, Sheet, Coil

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) plates, sheets, and coils, which are known for their outstanding mechanical properties and corrosion resistance.

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A182 Duplex & Super Duplex Outlets

Duplex (UNS S31803/S32205) and Super Duplex (UNS S32750/S32760) outlets, designed to provide strong, reliable connections in piping systems while maintaining excellent corrosion resistance.

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A928 Duplex & Super Duplex Filler Wire

Duplex (ER2209) and Super Duplex (ER2594) filler wires, which are engineered to provide exceptional corrosion resistance and mechanical strength during welding processes.

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A193 Duplex & Super Duplex Fasteners

Duplex (B8M Class 2) and Super Duplex (B8M Class 2) fasteners, which are known for their high strength and exceptional corrosion resistance.

Product Duplex (UNS S31803/S32205) Super Duplex (UNS S32750/S32760)
Pipes & Tubes ASTM A789/A790 (Duplex 2205) ASTM A789/A790 (Super Duplex 2507)
Plate, Sheet, Coil ASTM A240 (Duplex 2205) ASTM A240 (Super Duplex 2507)
Filler Wire ASTM A928 (ER2209 for Duplex) ASTM A928 (ER2594 for Super Duplex)
Pipe Fittings ASTM A815 (Duplex 2205) ASTM A815 (Super Duplex 2507)
Flanges ASTM A182 (F51/F60 for Duplex 2205) ASTM A182 (F53/F55 for Super Duplex 2507)
Round Bar ASTM A479 (Duplex 2205) ASTM A479 (Super Duplex 2507)
Fasteners ASTM A193 (B8M Class 2 for Duplex 2205) ASTM A193 (B8M Class 2 for Super Duplex 2507)

Equivalent Grades of Duplex & Super Duplex

Steel Grade Type ASTM EN (DIN) BS JIS GOST
UNS S31803 Duplex A790/A815 1.4462 32205S31 SUS329J3L 08X18H10
UNS S32205 Duplex A790/A815 1.4410 32205S31 SUS329J3L 08X19H10
UNS S32750 Super Duplex A790/A815 1.4410 2507S31 SUS329J3L 08X22H6
UNS S32760 Super Duplex A790/A815 1.4501 2507S31 SUS329J4L 08X23H6

Chemical Composition of Duplex & Super Duplex

Grade C Mn Si P S Cr Ni Mo N Fe
Duplex (UNS S31803) ≤ 0.03 1.0-2.0 0.5-1.0 ≤ 0.03 ≤ 0.01 18.0-20.0 4.5-6.5 2.5-3.5 0.08-0.2 Balance
Duplex (UNS S32205) ≤ 0.03 1.0-2.0 0.5-1.0 ≤ 0.03 ≤ 0.01 22.0-24.0 4.5-6.5 3.0-4.0 0.10-0.20 Balance
Super Duplex (UNS S32750) ≤ 0.03 1.0-2.0 0.5-1.0 ≤ 0.03 ≤ 0.01 24.0-26.0 6.0-8.0 3.5-4.5 0.20-0.30 Balance
Super Duplex (UNS S32760) ≤ 0.03 1.0-2.0 0.5-1.0 ≤ 0.03 ≤ 0.01 25.0-27.0 6.0-8.0 4.0-5.0 0.20-0.30 Balance

Mechanical Properties of Duplex & Super Duplex

Property Duplex (UNS S31803) Duplex (UNS S32205) Super Duplex (UNS S32750) Super Duplex (UNS S32760)
Tensile Strength (MPa) ≥ 620 ≥ 620 ≥ 750 ≥ 800
Yield Strength (MPa) ≥ 450 ≥ 450 ≥ 550 ≥ 600
**Elongation (%) ≥ 25 ≥ 25 ≥ 25 ≥ 25
Hardness (HB) ≤ 300 ≤ 300 ≤ 300 ≤ 300
Impact Toughness (J) ≥ 40 (at -40°C) ≥ 40 (at -40°C) ≥ 50 (at -40°C) ≥ 50 (at -40°C)

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