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Carlson 20 Plus Alloy
Categories: Metal; Nonferrous Metal; Nickel Alloy
Material Notes:

Carlson C20 Plus is a super-austenitic alloy, developed to provide maximum resistance to corrosion by sulfuric acid. Nickel chromium, molybdenum and copper contribute to the excellent overall resistance of C 20 Plus to chloride stress corrosion cracking and general pitting. Because this alloy is stabilized with columbium, it can be used in the as-welded condition, thus expediting on-site fabrication.

Applications

Although C 20 Plus was developed primarily for sulfuric acid applications, it is also widely used in other chemical processing environments. C 20 Plus is employed in flue-gas scrubbers, sulfuric acid pickling, and in various other industries such as petroleum refining, pulp and paper, food and dyes.

  • Chemical Processing – sulfuric acid, phosphoric acid, pesticides, formic and nitric acids, butadiene (synthetic rubber), caustics, solvents, explosives.
  • Petroleum Refining.
  • Flue Gas Scrubbing Systems
  • Pulp and Paper
  • Food and Dye Processing
  • Sulfuric Acid Pickling Equipment.

Information provided by Carlson
Key Words: UNS N08020
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Physical PropertiesMetricEnglishComments
Density 8.06 g/cc0.291 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell <= 217<= 217
Hardness, Rockwell B <= 95<= 95
Tensile Strength at Break >= 552 MPa>= 80000 psi
Tensile Strength, Yield >= 241 MPa
@Strain 0.2 %		>= 35000 psi
@Strain 0.2 %
Elongation at Break >= 30 %>= 30 %
Modulus of Elasticity 193 GPa28000 ksi
 
Thermal PropertiesMetricEnglishComments
CTE, linear  14.7 µm/m-°C
@Temperature 25.0 - 100 °C		8.16 µin/in-°F
@Temperature 77.0 - 212 °F
 15.9 µm/m-°C
@Temperature 25.0 - 450 °C		8.84 µin/in-°F
@Temperature 77.0 - 842 °F
 17.2 µm/m-°C
@Temperature 25.0 - 900.0 °C		9.53 µin/in-°F
@Temperature 77.0 - 1652 °F
Specific Heat Capacity 0.502 J/g-°C
@Temperature 0.000 - 100 °C		0.120 BTU/lb-°F
@Temperature 32.0 - 212 °F
 
Component Elements PropertiesMetricEnglishComments
Carbon, C <= 0.070 %<= 0.070 %
Chromium, Cr 19 - 21 %19 - 21 %
Copper, Cu 3.0 - 4.0 %3.0 - 4.0 %
Iron, Fe 29.85 - 44 %29.85 - 44 %
Manganese, Mn <= 2.0 %<= 2.0 %
Molybdenum, Mo 2.0 - 3.0 %2.0 - 3.0 %
Nb + Ta <= 1.0 %<= 1.0 %
Nickel, Ni 32 - 38 %32 - 38 %
Phosphorus, P <= 0.045 %<= 0.045 %
Silicon, Si <= 1.0 %<= 1.0 %
Sulfur, S <= 0.035 %<= 0.035 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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