Alloy 20 (UNS N08020 )
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Alloy 20 (UNS N08020 ) Alloy 20 (UNS N08020 )
Alloy 20 (UNS N08020 )
Alloy 20 (UNS N08020 )
Alloy 20 (UNS N08020 )
Alloy 20 (UNS N08020 )
  • Description
Jiangsu Bealloy Co.,Ltd produce special alloy products, including Bar,Rod,Sheet,Plate,Pipe,Tube Pipe Fittings,Rings,Forgings,Flange Coil and Strip,if any requirements not found, Please email us sales@bealloy.com. We will offer you best price and more details. Any customization are accepted.
  • ASTM A 265, B 366, B 463
    B 464, B 471, B 472, B 473
    B 474, B 475
    UNS N08020
    NACE MR0175

  • Other common names: Carpenter 20, 20Cb-3®, Incoloy® alloy 20
    Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid. This superalloy has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. Carpenter 20 combines excellent corrosion resistance with elevated mechanical properties and relatively easy fabrication. Although originally designed for use in sulfuric acid related industries, Alloy 20 is now a popular choice for a wide variety of industries including the chemical, food, pharmaceutical, and plastics industries. In addition, this superalloy is used in heat exchangers, mixing tanks, metal cleaning and pickling equipment, and piping.

  • There has long been a debate on whether Carpenter 20 is a stainless steel or a nickel alloy because the nickel content is right on the border of defining it as one way or the other. So, depending on who you talk to this alloy may be referred to as alloy 20 Stainless Steel or as a nickel alloy. Either way it is still great for corrosion resistance.

  • In what forms is Alloy 20 Available at Mega Mex?
    Sheet
    Plate
    Bar
    Pipe & Tube (welded & seamless)
    Fittings
    Flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples
    Welding Wire (AWS Classifications: ER320LR and E320LR-16)
    What are the characteristics of Alloy 20?
    Excellent general corrosion resistance to sulfuric acid
    Excellent resistance to chloride stress corrosion cracking
    Excellent mechanical properties and fabricability
    Minimal carbide precipitation during welding
    Excels in resisting corrosion to hot sulfuric acids

  • Chemical Composition, %

    Ni

    Fe

    Cr

    Cu

    Mo

    Nb

    32.00-38.00

    Balance

    19.0-21.0

    3.0-4.0

    2.0-3.0

    8xC-1.0max


    C

    Mn

    P

    S

    Si

    .07max

    2.0max

    .045max

    .035max

    1.0max



  • In what applications is Alloy 20 used?
    Synthetic rubber manufacturing equipment
    Processing of pharmaceuticals, plastics and organic and heavy chemicals
    Tanks, piping, heat exchangers, pumps, valves, and other process equipment
    Acid cleaning and pickling equipment
    Chemical process piping, reactor vessels
    Bubble caps
    Petrochemical process equipment
    Food and dye production

  • ASTM Specifications

    Pipe Smls

    Pipe Welded

    Tube Smls

    Tube Welded

    Sheet/Plate

    Bar

    Forging

    Fitting

    B729

    B464

    B729

    B468

    B463

    B473

    B462

    B366


  • Mechanical Properties Annealed Material

    Form

    Tensile Min.

    Yield Min. (.2% offset)

    Elongation Min.

    Reduction of Area Min.

    Bar (hot or cold finished)

    80 ksi

    35 ksi

    30%

    50%

    Sheet/Plate

    80 ksi

    35 ksi

    30%

    -



Alloy

ASTM

DIN

BS

AFNOR

GB

New grades

Old grades

Incoloy 800

UNS N08800

1.4876 / X10NiCrAlTi3220

NA15

Z8NC32.21

NS1101

NS111

Incoloy 800H

UNS N08810

1.4958 / X5 NiCrAlTi 31-20

NA 15 (H)


NS1102

NS112

Incoloy 800HT

UNS N08811

1.4959 / X 8 NiCrAlTi 32-21





Incoloy 825

UNS N08825

2.4858 / NiCr21Mo

NA16

NC21FeDu

NS1402

NS142

Incoloy 925

UNS N09925

1.4529 / X1NiCrMoCu





Incoloy 926

UNS N08926

1.4529 / X1NiCrMoCu

X1NiCrMoCu

X1NiCrMoCu



Incoloy 901

UNS N09901

2.4662





Incoloy 330

UNS N08830






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