ALLOY 20 SEAMLESS NICKEL PIPE, Seamless Welded Pipes Tubes Manufacturers Suppliers Stockist India

Brand ALLOY 20 SEAMLESS NICKEL PIPE, Seamless Welded Pipes Tubes Exporters in Mumbai India

ALLOY 20 SEAMLESS NICKEL PIPE, Seamless Welded Pipes Tubes Manufacturers Suppliers Stockist India

ALLOY 20 SEAMLESS NICKEL PIPE, Seamless Welded Pipes Tubes

Nickel Pipe

ALLOY 20 SEAMLESS NICKEL PIPE

Alloy 20 nickel pipe is made from a nickel-iron-chromium alloy with additions of copper and molybdenum. Contains niobium for stabilization against sensitization resulting in intergranular corrosion. Has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals,containing chlorides and sulfuric, phosphoric, nitric acids.

Typical applications include tanks, piping, heat exchangers, pumps, valves.

Stock Size Range:

OD:
1/2" through 4"
Wall:
Schedule 40 through Schedule 80

Specifications: ASTM B729, ASME SB 729

Typical Chemical Composition %
Nickel 32.0-38.0
Chromium 19.0-21.0
Iron Remainder
Molybdenum 2.0-3.0
Sulfur .035 max
Carbon 0.07 max
Manganese 2.0 max
Silicon 1.00 max
Phosphorous .045 max
Copper 3.0-4.0
Nb+Ta 8 X C-1.0
Typical Mechanical Properties
Annealed   Mpa
Yield Strength 35 ksi 240
Tensile Strength 80 ksi 550
Elongation % 30  

Online Inquiry

ALLOY 20

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 K.M Steel ?

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
  • Wire

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%
-

*Incoloy® is a registered trademark of Special Metals Corporation group of Companies.

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Available Stock at K.M Steel India

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