Duplex Steel S31803 Nuts Manufacturer in Cape Town , South Africa

Home > Duplex Steel > Duplex Steel S31803 Nuts

Duplex Steel S31803 nuts are robust fasteners crafted from duplex stainless steel, which features a well-balanced mix of austenite and ferrite. This unique blend gives them impressive mechanical strength, outstanding resistance to corrosion, and remarkable durability, even in harsh environments. These nuts stand up well against pitting, crevice corrosion, and stress corrosion cracking caused by chlorides, making them perfect for applications in chemical processing, petrochemicals, oil and gas, as well as marine and offshore settings.

Duplex Steel S31803 Nuts Durban, Duplex Steel S31803 Nuts Johannesburg, Duplex S31803 Nuts In Cape Town , Duplex Steel S31803 Nuts Price In Cape Town , Duplex F51 Nuts Manufacturer In Johannesburg, Duplex Steel F51 Shoulder Nuts Supplier In Durban, Duplex Steel F51 Dome Nuts Price In Germiston, Duplex S31803 Nuts Supplier In Gqeberha, Duplex Steel F51 Nut Suppliers & Exporters in Cape Town , South Africa.

Typically, the makeup of Duplex Steel S31803 nuts includes 22–25% chromium, 4–7% nickel, 2–4% molybdenum, and nitrogen, all of which boost their corrosion resistance and mechanical performance. They boast a tensile strength of about 620–850 MPa and a yield strength of around 450–550 MPa, along with excellent toughness, ductility, and fatigue resistance. The duplex microstructure also ensures thermal stability and guards against intergranular corrosion, providing reliable performance even under high-pressure and high-temperature conditions.

Duplex Steel S31803 Nuts Specifications

Material	Specification	Standards	Size	Length
Duplex Steel S31803	IS BS ASTM	ASTM / ASME – A/ SA 479 / 479	3 mm to 200 mm	M02 to M30

Duplex Steel S31803 Nuts Chemical Composition

Cr	N	Ni	C	Mn	Si	P	S	Mo
S31803	min: 21.0 max: 23.0	min: 0.08 max: 0.20	min: 4.5 max: 6.5	0.03 max	2.0 max	1.0 max	0.03 max	0.02 max	min: 2.5 max: 3.5
S32205	min: 22.0 max: 23.0	min: 0.14 max: 0.20	min: 4.5 max: 6.5	0.03 max	2.0 max	1.0 max	0.03 max	0.02 max	min: 3.0 max: 3.5

Duplex Steel S31803 Nuts Mechanical Properties

Grade	Tensile Strength (MPa) min	Elongation (% in 50mm)	Yield Strength 0.2% Proof (MPa) min	Hardness Rockwell C (HR C)
UNS-S 31803	650-880	25	448
UNS-S 32205	621	25	448	21 max

Duplex Steel F51 Dome Nuts Price In Cape Town , Duplex S31803 Nuts Supplier In Johannesburg, Duplex Steel F51 Nut Suppliers & Exporters in Durban, Suppliers of Duplex Steel F51 Coupling Nut In Germiston, Duplex Steel S31803 Acorn Nuts Manufacturer In Gqeberha, Duplex Steel F51 Dome Nuts In Cape Town , South Africa.

ISO Certified

Largest Inventory

On Time Deliveries

Customer Support

Largest Manufacturer and Supplier of Duplex Steel S31803 Nuts in Cape Town , South Africa

At Themban Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Nuts in Cape Town , South Africa, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Cape Town, 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 Nuts

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

Duplex Steel S31803 Nuts In Durban, Stockist of Duplex S31803 Nuts In Cape Town , Duplex Steel F51 Dome Nuts Price In Johannesburg, Duplex S31803 Nuts Supplier In Durban, Duplex Steel F51 Nut Suppliers & Exporters in Germiston, Duplex Steel S31803 Nuts Price In Gqeberha, Duplex F51 Nuts Manufacturer In Johannesburg, Duplex Steel F51 Shoulder Nuts Supplier In Cape Town , South Africa.

Duplex Steel S31803 Nuts Uses

You’ll find Duplex Steel S31803 nuts commonly used in pipelines, pressure vessels, heat exchangers, structural assemblies, and offshore platforms. Their blend of high strength, corrosion resistance, and durability guarantees secure fastening, a long service life, and minimal maintenance in demanding industrial and marine environments. These nuts ensure dependable and safe connections in both structural and process-critical applications.

Duplex Steel S31803 Nuts Manufacturer in Cape Town , South Africa

Table of Contents

Duplex Steel S31803 Nuts Specifications

Duplex Steel S31803 Nuts Chemical Composition