201 Stainless Steel Pipe

We supply a full range of 201 stainless steel pipes and tubes with reliable quality and flexible customization for industrial and architectural applications. Our products are available in various sizes, wall thicknesses, surface finishes, and processing options to meet structural, mechanical, decorative, and general fabrication requirements.

Available wall thickness ranges from 0.5 mm to 20 mm, with common outer diameters such as 1/2″, 3/4″, 1″, or custom cut-to-size upon request.

By Manufacturing Process:
Cold Drawn 201 Stainless Steel Seamless Pipe, Hot Rolled 201 Stainless Steel Seamless Pipe, ERW 201 Stainless Steel Pipe, Welded 201 Stainless Steel Tube

By Surface Treatment Type:
201 Pickled Stainless Steel Pipe, 201 Bright Annealed Stainless Steel Tube (BA), 201 Polished Stainless Steel Pipe, 201 Mirror Stainless Steel Tube, 201 Brushed Stainless Steel Tube

Specifications

201 Stainless Steel Pipe

201 stainless steel is an austenitic chromium-manganese stainless steel grade. Its typical chemical composition includes 16.0–18.0% chromium (Cr), 3.5–7.5% manganese (Mn), ≤ 4.5% nickel (Ni), and ≤ 0.15% carbon (C). By partially replacing nickel with manganese, 201 stainless steel provides a cost-effective alternative to 304 stainless steel while maintaining good strength and formability.

Compared with higher-nickel austenitic grades, 201 stainless steel pipe offers higher yield strength, good cold-working performance, and acceptable corrosion resistance in indoor, dry, or mildly corrosive environments. It is widely used in applications where appearance, strength, and cost efficiency are prioritized over high corrosion resistance.

Chemical Composition (Typical, %)

Mechanical Properties (Typical)

Heat Treatment of 201 Stainless Steel Pipe / Tube

1. Annealing

Temperature range: 1010–1065 °C

Process: Heating followed by rapid cooling (water quenching or air cooling, depending on thickness)

Purpose:
Relieves stresses caused by cold forming and welding, restores austenitic structure, and improves ductility and corrosion resistance.

2. Stress Relieving

Applied after cold working or welding, especially for precision pipes.

Helps reduce residual stress and improves dimensional stability during fabrication and service.

3. Hardening

201 stainless steel cannot be hardened by conventional heat treatment.

Mechanical properties are mainly determined by chemical composition and cold working, not by heat treatment.

4. Performance Stability

Proper solution annealing stabilizes the austenitic microstructure, improves formability, and enhances performance consistency, especially in welded areas.

Ensures reliable performance in decorative, structural, and general fabrication applications.

Note: 201 stainless steel is an austenitic grade and cannot be strengthened by heat treatment. Heat treatment is used for stress relief, structure restoration, and formability improvement rather than strength enhancement.

Features of 201 Stainless Steel Pipe / Tube

Corrosion Resistance:
Moderate resistance to atmospheric corrosion and mild environments. Suitable for indoor and low-corrosion applications, but not recommended for marine or highly corrosive conditions.

Mechanical Properties:
Higher yield strength than 304 stainless steel in cold-worked condition, with good ductility and forming performance.

Weldability:
Good weldability using standard stainless steel welding methods. Post-weld annealing may be applied to improve weld zone stability when required.

Magnetic Property:
Generally non-magnetic in annealed condition, but slight magnetism may appear after cold working.

Cost Efficiency:
Lower nickel content provides a cost-effective alternative to 304 stainless steel for applications where high corrosion resistance is not critical.

Applications of 201 Stainless Steel Pipe / Tube

Decorative and Architectural Use:
Handrails, railings, furniture frames, indoor decorative structures;
Recommended: thin to medium wall tubes.

Furniture and Fixtures:
Metal furniture frames, display racks, shop fittings;
Recommended: polished or brushed surface tubes.

Structural and Fabrication Use:
Indoor support structures, light-duty frames, welded assemblies;
Recommended: standard wall thickness pipes.

Household and Commercial Equipment:
Appliance frames, enclosures, support components;
Recommended: small to medium diameter tubes.

Indoor Piping Systems:
Non-pressure or low-corrosion fluid and air conveyance;
Recommended: welded pipes in annealed condition.

201 stainless steel pipes are especially suitable for indoor or low-corrosion environments where appearance, strength, and cost control are key considerations.

FAQ – 201 Stainless Steel Pipe / Tube

Q1: Does 201 stainless steel pipe require heat treatment?
Heat treatment is not always required. Annealing is commonly used after cold forming or welding to relieve stress and restore ductility.

Q2: Can 201 stainless steel pipe be hardened by heat treatment?
No. 201 stainless steel cannot be hardened by heat treatment. Strength is mainly influenced by cold working.

Q3: Is 201 stainless steel pipe suitable for outdoor use?
It can be used in mild outdoor environments, but it is not recommended for coastal or highly corrosive conditions.

Q4: Does 201 stainless steel pipe become magnetic?
In annealed condition, it is generally non-magnetic. Cold working may introduce slight magnetism.

Q5: When is post-weld heat treatment recommended for 201 stainless steel pipes?
Post-weld annealing is recommended for precision, heavily welded, or high-formability applications, but may not be necessary for general decorative or structural use.