Nickel Alloy 20, Carpenter® 20, Incoloy® 20

Alloy 20, also known as Carpenter® 20 and Incoloy® 20, is an austenitic nickel-iron-chromium alloy. This super alloy, which also includes copper and molybdenum, is popular in the production of gasoline, solvents, explosives, chemicals, pharmaceuticals and food and synthetic materials. It offers users a wide variety of benefits including:

  • Excellent resistance to corrosion, crevice corrosion, and pitting
  • Perfect for use around sulfuric, phosphoric, and nitric acids
  • Ease of fabrication and elevated mechanical properties

Available in flat bar, forging stock, hexagon, plate, pipe, sheet, strip, round bar, tube, and wire, Alloy 20 can be fabricated to produce:

  • Mixing Tanks
  • Heat Exchangers
  • Process Piping
  • Pickling Equipment
  • Pumps, valves, fasteners, and fittings

Alloy 20 meets or exceeds different industry standards including a multitude of ASTM, ASME, ISO, and DIN standards. TIG, MIG, and SAW welding can be used on Alloy 20, and can be formed through hot and cold working.

Alloy 20 has a unique chemical composition:

  • Fe 31-44% balance
  • Ni 32.5-35%
  • Cr 19-21%
  • Cu 3-4%
  • Mo 2-3%

Due to its high nickel content (32-38%), there is some disagreement whether Alloy 20 is a nickel or a stainless steel alloy. No matter what side of the discussion you fall on, it is clear that Alloy 20 is an excellent choice for a wide variety of industries and applications. At Continental Steel, we are proud to stock and sell Nickel Alloy 20, Carpenter® 20, and Incoloy® 20 in all of the popular sizes and forms.

We stock and sell Nickel Alloy 20, Carpenter® 20 and Incoloy® 20 in Flat Bar, Forging Stock, Hexagon, Plate, Pipe, Sheet, Strip, Round Bar, Tube and Wire.

Chemical Composition of Nickel Alloy 20, Carpenter® 20 and Incoloy® 20

C

.06 max

Cb

1.0 max

Cr

19.0 - 21.0

Cu

3.0 - 4.0

Fe

31.0 - 44.0

Mn

2.0 max

Mo

3.0 - 4.0

Ni

32.5 - 35.0

Nb

1.0 max

Si

1.0 max


Nickel Alloy 20, Carpenter® 20 and Incoloy® 20 Standards

Rod, Bar, Wire, Forging Stock

ASTM B 462
ASTM B 472
ASTM B 473
ASME SB 472
ASME SB 473
ISO 9723
ISO 9724
ISO 9725
DIN 17752-17754

Plate, Sheet, Strip

ASTM A 240
ASTM A 480
ASTM B 463
ASTM B 906
ASME SA 240
ASME SA 480
ASME SB 463
ASME SB 906
ISO 6208
DIN 17750

Pipe and Tube

ASTM B 729
ASTM B 829
ASTM B 468
ASTM B 751
ASTM B 464
ASTM B 775
ASTM B 474
ASME SB 729
ASME SB 829
ASME SB 468
ASME SB 751
ASME SB 464
ASME SB 775
ASME SB 474
ISO 6207
DIN 77751

Other

DIN 17744
ASTM B 366
ASTM B 462
ASTM B 471
ASTM B 475
ASME SB 366
ASME SB-462
ASME SB 471
ASME SB 475


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