Duplex Steel S31803 Washers Manufacturers

Duplex Steel S31803 Washers are made from Duplex 2205, which is an alloy composed of a combination of austenitic and ferritic stainless steels. The S31803 grade is commonly referred to as Duplex 2205 and is known for its excellent corrosion resistance, high strength, and good weldability.

Key Characteristics of Duplex Steel S31803 Washers

1. Chemical Composition:
• Chromium (Cr): 21 - 23%
• Nickel (Ni): 4.5 - 6.5%
• Molybdenum (Mo): 2.5 - 3.5%
• Nitrogen (N): 0.08 - 0.20%
• Manganese (Mn): Max 2%
• Silicon (Si): Max 1%
• Phosphorus (P): Max 0.03%
• Sulfur (S): Max 0.02%
• Iron (Fe): Balance

2. Mechanical Properties:

• Yield Strength: ≥ 450 MPa
• Tensile Strength: 620 - 850 MPa
• Elongation: ≥ 25%
• Hardness: Max 293 HBW (Brinell Hardness)

3. Corrosion Resistance:

• Duplex Steel S31803 offers high resistance to stress corrosion cracking, pitting, and crevice corrosion, especially in chloride-rich environments.
• Suitable for both acidic and alkaline environments, including exposure to seawater and brackish water.
1. Applications:
• Commonly used in oil and gas industries, petrochemical plants, desalination plants, chemical processing, pulp and paper industry, and marine applications.
• Suitable for use in heat exchangers, pressure vessels, flanges, and pipelines.
2. Advantages:
• High Strength: The duplex structure provides higher strength than austenitic or ferritic steels.
• Excellent Weldability: Can be welded with most welding methods.
• Cost-Effective: Offers a good balance of strength and cost compared to other corrosion-resistant alloys.
• Good Durability: Suitable for harsh environments due to its excellent mechanical and corrosion properties.
3. Standards and Specifications:
• ASTM A182, ASTM A240, ASTM A276, ASTM A479
• ASME SA182, SA240, SA479

EN 1.4462, UNS S31803

Chhajed Steel Limited is one of the apparent producers, exporters and suppliers of ASTM A479 Duplex Steel UNS S31803 and UNS S32205 Washers, which is the most broadly used duplex austenitic and ferritic compound level. ASTM A479 Duplex Steel UNS S32205 Spring Washers has extraordinary weldability and can be joined by most of the average welding draws near, for instance, Shielded metal twist welding, Plasma round fragment welding, Submerged-bend welding and Gas tungsten roundabout portion welding. ASME SA 479 Duplex Steel UNS S31803 Square Washers is ferritic, austenitic 22 percent of chromium, two-arrange, 3 percent of molybdenum, and 5-6 percent of nickel alloyed steel. ASTM A479 Duplex Steel UNS S32205 Round Washers is nitrogen expanded duplex compound which was encircled to fight with fundamental utilization issues that are being uncover with 300 plan mixes. ASME SA 479 Duplex Steel UNS S31803 Machined Washers is fortified at 1868 to 1958 Deg F and after that water is smothered.

DUPLEX STEEL UNS S31803 & UNS S32205 WASHER SPECIFICATION

Material

Specification

Standards

Size

Length

Duplex Steel

IS

BS

ASTM

ASTM / ASME - A/ SA 479 / 479

3 mm

to

200 mm

M02 to M30

Conclusion

Duplex Steel S31803 washers are a superior choice for demanding environments that require high strength, excellent corrosion resistance, and long-term reliability. Their unique combination of properties makes them a valuable component in industries ranging from oil and gas to marine applications.

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