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  • 201 Stainless Steel Pipe

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201 Stainless Steel Pipe
201 stainless steel pipe is a cost-effective chromium-nickel-manganese austenitic stainless steel pipe. Through the addition of manganese and nitrogen to partially replace nickel, it maintains an austenitic structure while reducing cost. Suitable for applications with mild corrosion requirements and decorative purposes.
Phone：+86 18954208811
Email：info@hwdsteel.com
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Add：Keda Xunfei Weilaigang Building, No. 1 Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province
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◉ PRODUCT SPECIFICATION


1. Standard Designations


  • UNS: S20100

  • ASTM: A312/A312M (Partial)

  • GB/T: 12Cr17Mn6Ni5N

  • JIS: SUS 201


2. Chemical Composition (% by weight)


Element

C

Si

Mn

P

S

Cr

Ni

N

Min

-

-

5.50

-

-

16.0

3.50

0.15

Max

0.15

1.00

7.50

0.060

0.030

18.0

5.50

0.25


3. Mechanical Properties


Property

Yield Strength

Tensile Strength

Elongation

Hardness

Value

≥275 MPa

≥655 MPa

≥35%

≤241 HB


4. Corrosion Resistance


  • General Corrosion: Moderate resistance to atmospheric corrosion

  • Application Limitation: Not recommended for strong corrosive environments

  • PREN Value: ~16-18


5. Physical Properties


Property

Value

Density

7.80 g/cm³

Melting Range

1399-1421°C

Thermal Conductivity

16.3 W/m·K

Thermal Expansion

16.5 × 10⁻⁶/K

Modulus of Elasticity

200 GPa


6. Product Range & Specifications


Parameter

Seamless Pipe

Welded Pipe

Outer Diameter

6mm - 219mm

6mm - 600mm

Wall Thickness

1.0mm - 20mm

0.8mm - 15mm

Length

4-6m (Random)

4-6m (Random)


7. Manufacturing Processes


  • Seamless Pipe: Hot extrusion, cold drawing

  • Welded Pipe: ERW (Electric Resistance Welding)


8. Surface Finishes


  • Annealed & Pickled: Standard industrial finish

  • Mechanically Polished: 180G, 240G, 320G, etc.

  • Mirror Polished: #600, #800

  • Electropolished: High-purity applications


9. Typical Applications


  • Decorative handrails and guardrails

  • Furniture and architectural decoration

  • Indoor water pipes and low-pressure fluid transport

  • Automotive exhaust systems

  • Household appliance components


Quality Assurance:


  • Hydrostatic test available

  • Eddy current testing for welded pipes

  • Material certificate provided

  • Size and thickness tolerance per standards


Technical Notes:


  • Cost-effective alternative to 304 for mild environments

  • Good formability and weldability

  • Not suitable for chemical processing or marine environments

  • Recommended for indoor and decorative applications

All pipes meet relevant industry standards and come with complete quality documentation.

◉ Surfcae selection

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SURFACE CHARACTERISTIC SUMMARY OF MANUFACTURING METHOD APPLICATION
NO.1 Silvery white Hot rolled to specified thickness Do not need to have a glossy surface use
lackluster
NO.2D Silvery white After cold rolling, heat treatment and pickling are carried out General material, deep material
NO.2B Gloss is stronger than No.2D After No.2D treatment, the final light cold rolling is carried out through the polishing roller The general material
BA As bright as a sixpence No standard, but usually a bright annealed surface with high reflectivity. Building materials, kitchen utensils
NO.3 Rough lapping Grind with 100~200# (unit) strop tape Building materials, kitchen utensils
NO.4 Intermediate grinding Polished surface obtained by grinding with 150~180# strop abrasive tape Building materials, kitchen utensils
NO.240 Fine lapping Grinding with 240# strop abrasive tape kitchenware
NO.320 Very fine grinding Grinding was carried out with 320# strop abrasive tape kitchenware
NO.400 The luster is close to BA Use 400# polishing wheel to grind General timber, building timber, kitchen appliances
HL Hairline grinding Suitable particle material for hair stripe grinding (150~240#) with many grains Building, construction material
NO.7 It's close to mirror grinding Use a 600# rotary polishing wheel to grind For art or decoration
NO.8 Mirror ultrafinish The mirror is ground with a polishing wheel Reflector, for decoration

◉ PRODUCTION AND WAREHOUSING

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Keda Xunfei Weilaigang Building, No. 1 Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province