Duplex Steel S31803 Flanges Manufacturer in Canberra, Australia

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Marsh Nickel Alloys is a reputable manufacturer and supplier located in Canberra, Australia, focusing on high-quality Duplex Steel S31803 Flanges. These flanges are celebrated for their remarkable strength, durability, and resistance to corrosion, making them perfect for even the toughest industrial settings. At Marsh Nickel Alloys, there’s a strong commitment to precision manufacturing and rigorous quality control, ensuring that every product delivers consistent and reliable performance. You’ll find Duplex Steel S31803 Flanges in various industries, including oil and gas, chemical processing, marine, and power generation, where they provide robust and long-lasting solutions for piping systems and critical infrastructure that face high pressures, corrosive substances, and harsh operating conditions.

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These flanges are made up of about 22% chromium, 5–6% nickel, 3% molybdenum, and trace amounts of nitrogen, which allows them to harness the best features of both austenitic and ferritic stainless steels. This unique composition results in excellent mechanical properties, such as high tensile strength, superior toughness, and outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion. They maintain stability even in high temperatures and aggressive chemical environments, ensuring they perform reliably and last long in demanding applications.

Duplex Steel S31803 Flanges Specifications

Specifications	ASTM A182 / ASME SA182
Size	1/8″ NB TO 48″ NB
Standards	ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure	150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Grades	S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61

Duplex Steel S31803 Flanges Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S31803	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	22.0 – 23.0	3.0 – 3.5	4.50 – 6.50	0.14 – 0.20	63.72 min

Duplex Steel S31803 Flanges Mechanical Properties

Grades	Density (g/cm 3)	Density (lb/in 3)	Melting Point (°C)	Melting Point (°F)
S31803	7.805	0.285	1420 – 1465	2588 – 2669

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Largest Manufacturer and Supplier of Duplex Steel S31803 Flanges in Canberra, Australia

At Marsh Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Flanges in Canberra, Australia, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Australia, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.

Types of Duplex Steel S31803 Flanges

We offer These Products as per DIN, ISO, JIS or ANSI Standard.

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Duplex Steel S31803 Flanges Uses

Duplex Steel S31803 Flanges are widely utilized in oil and gas pipelines, chemical and petrochemical facilities, seawater desalination systems, and marine engineering projects. They’re perfect for connecting pipes, valves, pumps, and other essential components in high-pressure and corrosive settings. With exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, these flanges guarantee leak-proof, durable joints. Their impressive mechanical strength, corrosion resistance, and reliability make them indispensable for offshore platforms, refineries, chemical reactors, and heat exchangers that operate under tough and challenging conditions.

Duplex Steel S31803 Flanges Manufacturer in Canberra, Australia

Table of Contents

Duplex Steel S31803 Flanges Specifications

Duplex Steel S31803 Flanges Chemical Composition