Alloy 20 Stainless Steel

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Applications

Extraction columns, Heat exchangers, Mixing tanks, Pipes, Pumps, Valves, Food processing equipment, Springs

Description

Alloy 20 is a nickel-iron-chromium alloy with excellent corrosion resistance in acidic environments including phosphoric, sulfuric, and nitric acids. Alloying additions also provide resistance to stress corrosion cracking in chloride rich environments. Alloy 20 can be fabricated and welded through most conventional processes while maintaining resistance to pitting and crevice corrosion.

Industries Supplied

Chemical Processing, Food Processing, Oil & Gas

Nominal Composition

C: 0.07 max
Mn: 2.00 max
Si: 1.00 max
P: 0.045 max
S: 0.035 max
Cr: 19.0 – 21.0
Ni: 32.0 – 38.0
Mo: 2.00 – 3.00
Cu: 3.00 – 4.00
Cb + Ta: 8*C-1.0 min
Fe: Balance

Physical Properties

Density: 0.292 lb/in³, (8.08 g/cm³)

Modulus of Elasticity (E):
At 70°F (20°C): 28.0 x 10³ ksi (193 GPa)

Modulus of Rigidity (G)
At 70°F (20°C):  11.0 x 10³ ksi (76 GPa)

Coefficient of Expansion:
8.2 µin/in.-°F (70-212°F)
14.7 µm/m-°C (25-100°C)

Electrical Resistivity: 53.5 µohm-in, (135.9 µohm-cm)

Thermal Conductivity:
85 Btu-in/ft²hr-°F
12.3 W/m-°C

Applicable Specifications

Strip and Foil: ASTM A240, ASTM B463, NACE MR0175/ISO 15156, NACE MR0103

Typical Mechanical Properties

• Annealed
  • Heat Treatment: 1650-1830°F (900-1000°C)
  • Tensile Strength: 80 – 110 ksi (550-760MPa)
  • Suggested Operating Conditions: up to 930°F (500°C)

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For further information Contact:

Contact Us
Phone: 1 888 843 2350
Elgiloy Specialty Metals – Strip Products
1565 Fleetwood Dr.
Elgin, IL 60123 USA

Limitation of Liability and Disclaimer of Warranty:

• The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only.  It is not intended for engineering or design.
• Applications may be discussed, however, Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, does not recommend or endorse any material for any particular end use or application.
• The data included in this data sheet are typical values and may vary.
• Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.

In no event will Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.