201 STAINLESS STEEL ALLOY

201 STAINLESS STEEL ALLOY

201 STAINLESS STEEL ALLOY UNS: S2010 Industries supplied include: Cooking Utensils, Restaurant Equipment, Appliances, Automotive Trim, and Architectural Applications. Nominal Composition Physical Properties At 70°F (At 20°C) Density 0.283 lb./in3 / (7.81 g/cm3) Modulus of Elasticity (E) 28.6 x...
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Product Details

201 STAINLESS STEEL ALLOY

UNS: S2010

Industries supplied include: Cooking Utensils, Restaurant Equipment, Appliances, Automotive Trim, and Architectural Applications.


Nominal Composition

C:

0.15 max

Mn:

5.50 – 7.50

P:

0.060 max

S:

0.030 max

Si:

1.00 max

Cr:

16.0 – 18.0

Ni:

3.5 – 5.5

N:

0.25 max

Fe:

BAL


Physical Properties
At 70°F (At 20°C)


Density
0.283 lb./in3 / (7.81 g/cm3)


Modulus of Elasticity (E)
28.6 x 103 ksi / (197 x 103MPa)


Coefficient of Expansion
10.2 x 10-6 microinches/in.-°F (70-600°F) / (18.4 μm/m-°C) (20-300°C)


Electrical Resistivity
27 μ ohm.in / (68.5 μ ohm.cm)


Thermal Conductivity
9.4 Btu-in./ft.2hr.-°F / (16.2 W/m-K)


Typical Mechanical Properties – Typical Room Temperature Mechanical Properties

Typical mechanical properties are based on ASTM A240


Condition Annealed (Min)


Tensile Strength Min (UTS)
75 ksi (515 MPa)

0.2% YS Min
38 ksi (260 MPa)


Elongation% in 2” Min (50.8 mm)
40%


Hardness Rockwell
95 HRBW (Max)

*Tempered Properties available upon request*


Qualities of type 201 stainless steel are:

Density (lb./ in2) @ RT: 0.283
Modulus of Elasticity in Tension (psi x 106): 28.6
Specific Heat (BTU/° F/lb.): 32 to 212°F 0.12
Thermal Conductivity (BTU/hr/ft2/ft): 212°F 9.4
Melting Point Range (°F): 2550-2650°F


Type 201LN Stainless:
This alloy is very comparable to type 304 in many respects, but they can provide some advantages over type 304 in certain applications.


  1. Resistance to corrosion comparable to type 304.

  2. Good resistance to oxidation.

  3. Ease of fabrication. High elongation permits bending and forming.

  4. Lower cost manganese and nitrogen are added as partial substitutes for nickel. Providing a lower more stable cost.

  5. Same physical appearance as type 304 stainless.

  6. Superior mechanical strength compared to type 304 stainless.

  7. The higher strength of type 201LN may permit weight reduction through the use of thinner material.

  8. Increased hardness over type 304 Stainless.

  9. Excellent toughness especially at low temperatures. Yield and Tensile strengths increase as temperature decreases.

  10. If type 304 is working satisfactorily in an application, the substitution of 201LN should be considered.

  11. Alloy is non-magnetic.

  12. Readily available in sheet and plate forms. No structural availability at this time.


Type 201LN stainless has been available for over 40 years and has gained acceptance in a number of applications.


This alloy is used extensively in the transportation industry for Dump bodies, truck trailer components and railroad cars as well as cryogenic tanks and vessels.


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