Stainless Steel 321 and 321H Welded Pipes

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Stainless Steel 321 and 321H Welded Pipes Manufacturer, Supplier and Exporter in Hyderabad, India

Aman Pipes and Tubes, located in Hyderabad, India, has built a solid reputation as a manufacturer and supplier of Stainless Steel 321/321H Welded Pipes. They pride themselves on delivering top-notch products that cater to various industrial needs. SS 321 is a titanium-stabilized austenitic stainless steel, celebrated for its remarkable resistance to intergranular corrosion and high-temperature oxidation. On the other hand, SS 321H, the high-carbon version, boasts improved creep strength. These welded pipes are a go-to choice for heat-intensive applications, thanks to their durability, weldability, and structural integrity. Aman Pipes and Tubes is committed to precision engineering, timely deliveries, and customization, making them a reliable partner for industries like petrochemicals, refineries, and thermal power plants.

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Stainless Steel 321/321H Welded Pipes are mainly made up of Chromium (17–19%), Nickel (9–12%), and Titanium (≥5xC%). The Carbon content is low in 321 (≤0.08%) and slightly higher in 321H (0.04–0.10%) to enhance high-temperature strength. These pipes offer a tensile strength of about 515 MPa, a yield strength of around 205 MPa, and an elongation of 35%. SS 321/321H is known for its excellent creep resistance, stress rupture strength, and oxidation resistance up to 870°C. They are non-magnetic when annealed and maintain their mechanical properties even after long exposure to high temperatures.

Stainless Steel 321 and 321H Welded Pipes Specification

Specifications : ASTM A312 / ASME SA312

Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock

Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Size : 1/2″ NB – 24″ NB

Type : Welded

Form: Round Pipes, Square Pipes, Rectangular Pipes.

Length : Single Random, Double Random & Required Length

End : Plain End, Beveled End, Treaded

Equivalent Grades for Stainless Steel 321 and 321H Welded Pipes

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10
SS 321H	1.4878	S32109	SUS 321H	X12CrNiTi18-9

321 and 321H Stainless Steel Welded Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	5(C+N) – 0.70 max
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

SS 321 and 321H Welded Pipes Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000, MPa – 515	Psi – 30000, MPa – 205	35 %

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose 321 and 321H Stainless Steel Welded Pipes from Aman Pipes and Tubes?

Choosing Stainless Steel 321 and 321H Welded Pipes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.

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Largest 321 and 321H Stainless Steel Welded Pipes Supplier in Hyderabad, India

Aman Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H Welded Pipes in Hyderabad, India, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.

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321 and 321H Stainless Steel Welded Pipe Sizes

NB Sizes	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/8″	✓	✓	✓	✓
1/4″	✓	✓	✓	✓
3/8″	✓	✓	✓	✓
1/2″	✓	✓	✓	✓	✓
3/4″	✓	✓	✓	✓	✓
1″	✓	✓	✓	✓	✓
1 1/4″	✓	✓	✓	✓	✓
1 1/2″	✓	✓	✓	✓	✓
2″	✓	✓	✓	✓	✓
2 1/2″	✓	✓	✓	✓	✓
3″	✓	✓	✓	✓	✓
4″	✓	✓	✓	✓	✓
5″	✓	✓	✓	✓
6″	✓	✓	✓	✓

Physical Properties of SS 321 and 321H Welded Pipes

Grade	Density (kg/m3)	Elastic Modulus (GPA)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
321 and 321H	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

Types of 321 and 321H Stainless Steel Welded Pipes

Are Custom Sizes Available for 321 and 321H Stainless Steel Welded Pipes?

We offer custom sizes for Stainless Steel 321 and 321H Welded Pipes to meet your specific needs. Our dedicated team at Aman Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@amanpipesandtubes.co.in.

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Stainless Steel 321/321H Welded Pipes are perfect for high-temperature, corrosive settings like heat exchangers, furnace components, and expansion joints. They are widely utilized in the aerospace, chemical, and petroleum refining sectors, providing dependable performance in systems that experience both continuous and intermittent heating. SS 321 is often the material of choice for applications that need resistance to intergranular corrosion post-welding, while 321H is favored for its superior strength at elevated temperatures. Other common uses include exhaust manifolds, boiler tubes, and pressure vessels. Their outstanding properties make them a reliable option for demanding environments.