Duplex Steel S31803 Round Bar Manufacturer, Supplier, and Stockists in India

Duplex Steel S31803 Round Bar is a versatile material widely used in various industrial manufacturing applications due to its unique combination of properties. This grade of duplex stainless steel is characterized by its mixed microstructure of austenite and ferrite, which provides enhanced strength and corrosion resistance. Typical applications include the oil and gas industry, chemical processing, and marine environments, where its durability and resistance to pitting and crevice corrosion are vital for long-term performance.

One of the primary advantages of Duplex Steel S31803 is its excellent mechanical properties, including high tensile and yield strength. With a tensile strength of approximately 620 MPa and a yield strength around 450 MPa, it can withstand significant loads and stress without deformation. Additionally, its elongation percentage, which is around 25%, indicates good ductility, making it suitable for various fabrication processes including welding and machining.

In terms of corrosion resistance, Duplex Steel S31803 excels in harsh environments, particularly in chloride-containing conditions. Its composition includes a balanced amount of chromium and molybdenum, which enhances its resistance to localized corrosion. This makes it an ideal choice for applications in coastal and offshore installations, where exposure to saltwater can lead to rapid material degradation. Furthermore, the alloy's ability to maintain mechanical strength at elevated temperatures makes it suitable for high-temperature applications.

Overall, the use of Duplex Steel S31803 Round Bar in industrial manufacturing not only ensures longevity and reliability but also contributes to cost efficiency by reducing maintenance and replacement needs. Its favorable combination of mechanical and chemical properties positions it as a preferred choice among engineers and manufacturers looking for robust materials that can withstand the rigors of industrial applications.

Specification Table

Specification	Duplex Steel S31803 Round Bar
Material Grade	Duplex Steel S31803 Round Bar
Standards	ASTM A240, ASME SA240
Form	Round Bar
Size Range	10 mm - 300 mm
Wall Thickness	N/A
Length	Single Random, Double Random
Density	7.8 g/cm³
Tensile Strength	620 MPa
Yield Strength (0.2% Offset)	450 MPa
Elongation	25%
Hardness	Rockwell B85
Melting Point	1350°C
Corrosion Resistance	Excellent in marine & chemical environments
Applications	Oil & Gas, Chemical Processing, Marine
Exported To	UAE, USA, Canada, Germany, Africa

Chemical Properties Table

Chemical Element	Duplex Steel S31803 Round Bar
Nickel (Ni)	5.0 - 6.5%
Chromium (Cr)	19.0 - 21.0%
Iron (Fe)	Balance
Manganese (Mn)	1.0 - 1.5%
Carbon (C)	≤ 0.03%
Silicon (Si)	≤ 1.0%
Other elements	Molybdenum (Mo) 2.5 - 3.5%, Nitrogen (N) 0.08 - 0.20%

Mechanical Properties Table

Mechanical Property	Duplex Steel S31803 Round Bar
Tensile Strength (MPa)	620
Yield Strength (0.2% Offset, MPa)	450
Elongation (%)	25
Hardness (Rockwell)	B85
Modulus of Elasticity (GPa)	200
Poisson's Ratio	0.3
Shear Modulus (GPa)	80
Density (g/cm³)	7.8
Reduction of Area (%)	50
Ultimate Tensile Strength (MPa)	800

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