201 Stainless Steel Pipe
✓ Standard:AISI, ASTM, GB, JIS, SUS
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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
| Item | Specification |
|---|---|
| Material Grade | 201 Stainless Steel |
| UNS No. | S20100 |
| EN Grade | 1.4372 |
| Standards | ASTM A554, ASTM A312, ASTM A269, EN 10217, JIS G3446 |
| Pipe Type | Seamless Pipe / Welded Pipe |
| Manufacturing Process | Cold Drawn, Hot Rolled, ERW, Welded |
| Outer Diameter (OD) | 6 mm – 219 mm (1/4″ – 8″) |
| Wall Thickness | 0.5 mm – 20 mm |
| Length | 6 m, 12 m, or Custom Length |
| Surface Finish | Pickled, Bright Annealed (BA), Polished, Mirror, Brushed |
| End Type | Plain End, Beveled End |
| Form | Round Pipe (Other shapes available upon request) |
| Condition | Annealed / Cold Worked |
| Application | Structural, Decorative, Mechanical, General Fabrication |
| Custom Service | Cutting, Polishing, Bending, Welding |
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, %)
| Element | C | Si | Mn | P | S | Cr | Ni |
|---|---|---|---|---|---|---|---|
| 201 | ≤0.15 | ≤1.00 | 3.5–7.5 | ≤0.060 | ≤0.030 | 16.0–18.0 | ≤4.5 |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 275 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 217 HB |
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.
1. Standard Export Packaging
All stainless steel sheets, plates, pipes, coils, and bars are packed according to export standards to ensure safety during handling and transportation.
Sheets & Plates: Covered with PVC protective film or waterproof paper, then fixed on fumigated wooden pallets or packed in wooden cases .
Coils: Secured with steel strips and supported by steel frames to prevent deformation.
Pipes & Bars: Bundled with steel straps or packed in wooden boxes based on length and diameter.
2. Surface & Damage Protection
Packaging focuses on protecting the material surface and structural integrity.
Moisture-resistant wrapping to reduce the risk of corrosion
Edge and corner protection for sheets and plates
Firm strapping to avoid movement during container loading and unloading
This helps minimize scratches, bending, and other damage during long-distance transportation.
3. Container & Long-Distance Transportation
All packaging is suitable for container shipping and international logistics.
Stable pallet stacking for container loading
Secure fixing to prevent shifting during sea transportation
Suitable for sea, land, and multimodal transport
Products are packed to remain stable during extended transit and storage.
4. Customized Packaging Options
Packaging can be adjusted based on customer requirements.
Customized pallet sizes or reinforced packaging
Special labeling or marking for easy identification
Mixed loading arrangements for different products
Packaging details can be confirmed before shipment, and photos are available upon request.
| English Name | China GB/T | Japan JIS | USA AISI/UNS | Europe EN/DIN |
|---|---|---|---|---|
| Austenitic Stainless Steel 201 | 0Cr17Mn6Ni5N | SUS201 | AISI 201 / UNS S20100 | EN 1.4372 |
| Austenitic Stainless Steel 202 | 0Cr18Mn9Ni6N | SUS202 | AISI 202 / UNS S20200 | EN 1.4122 |
| Austenitic Stainless Steel 301 | 06Cr17Ni7 | SUS301 | AISI 301 / UNS S30100 | EN 1.4310 |
| Austenitic Stainless Steel 303 | 0Cr17Ni13Mo | SUS303 | AISI 303 / UNS S30300 | EN 1.4305 |
| Austenitic Stainless Steel 304 | 0Cr18Ni9 | SUS304 | AISI 304 / UNS S30400 | EN 1.4301 |
| Austenitic Stainless Steel 304L | 06Cr19Ni10 | SUS304L | AISI 304L / UNS S30403 | EN 1.4307 |
| Austenitic Stainless Steel 305 | 0Cr17Ni14Cu2 | SUS305 | AISI 305 / UNS S30500 | EN 1.4303 |
| Austenitic Stainless Steel 309S | 00Cr23Ni13 | SUS309S | AISI 309S / UNS S30908 | EN 1.4828 |
| Austenitic Stainless Steel 310S | 0Cr25Ni20 | SUS310S | AISI 310S / UNS S31008 | EN 1.4845 |
| Austenitic Stainless Steel 316 | 0Cr17Ni12Mo2 | SUS316 | AISI 316 / UNS S31600 | EN 1.4401 |
| Austenitic Stainless Steel 316L | 00Cr17Ni12Mo2 | SUS316L | AISI 316L / UNS S31603 | EN 1.4404 |
| Austenitic Stainless Steel 316Ti | 00Cr17Ni12Mo2Ti | SUS316Ti | AISI 316Ti / UNS S31635 | EN 1.4571 |
| Austenitic Stainless Steel 317 | 00Cr19Ni13Mo3 | SUS317 | AISI 317 / UNS S31700 | EN 1.4438 |
| Austenitic Stainless Steel 321 | 00Cr19Ni10Ti | SUS321 | AISI 321 / UNS S32100 | EN 1.4541 |
| Austenitic Stainless Steel 347 | 0Cr19Ni12Mo2Ti | SUS347 | AISI 347 / UNS S34700 | EN 1.4550 |
| Austenitic Stainless Steel 904L | ZG0Cr19Ni25Mo4Cu2 | SUS904L | AISI 904L / UNS N08904 | EN 1.4539 |
| Austenitic Stainless Steel 254SMO | ZG17Cr20Ni14Mo3Cu | SUS312L1 | AISI 254SMO / UNS S31254 | EN 1.4547 |
| Ferritic Stainless Steel 409 | 0Cr11Mo | SUS409 | AISI 409 / UNS S40900 | EN 1.4512 |
| Martensitic Stainless Steel 410 | 1Cr13 | SUS410 | AISI 410 / UNS S41000 | EN 1.4006 |
| Martensitic Stainless Steel 420 | 0Cr17Ni4Cu4Nb | SUS420 | AISI 420 / UNS S42000 | EN 1.4021 |
| Ferritic Stainless Steel 430 | 0Cr17 | SUS430 | AISI 430 / UNS S43000 | EN 1.4016 |
| Ferritic Stainless Steel 439 | 0Cr18Mn11Nb | SUS439 | AISI 439 / UNS S43900 | EN 1.4517 |
| Ferritic Stainless Steel 444 | 0Cr18Mn13Si | SUS444 | AISI 444 / UNS S44400 | EN 1.4521 |
| Ferritic Stainless Steel 446 | 0Cr25Mo4N | SUS446 | AISI 446 / UNS S44600 | EN 1.4762 |
| Martensitic Stainless Steel 416 | 0Cr13MoS4 | SUS416 | AISI 416 / UNS S41600 | EN 1.4005 |
| Duplex Stainless Steel 2205 | ZG2CrNiMo | SUS329J4L | UNS S32205 | EN 1.4462 |
| Duplex Stainless Steel 2304 | ZG0Cr23Ni5MoN | SUS329J1L | UNS S32304 | EN 1.4362 |
| Precipitation Hardening Stainless 17-4PH | ZG0Cr17Ni4Cu4Nb | SUS630 | UNS S17400 | EN 1.4542 |
| Martensitic Stainless Steel 431 | ZG1Cr17Ni2Mo | SUS431 | AISI 431 / UNS S43100 | EN 1.4057 |
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