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ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

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ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

Brand Name : HT

Model Number : ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

Certification : ISO SGS BV TUV,ETC.

Place of Origin : China

MOQ : 1KG

Price : negotiable

Payment Terms : L/C, T/T, Western Union

Supply Ability : 100000000000000kgs per month

Delivery Time : 5~60days

Packaging Details : Plywood case,pallet,carton,etc.as per your requirements.

Product Name : ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

Standard : ASTM B166 / ASTM SB166

Type : Plate,Sheet,Strip Coil

Length : 0~12mm or As Per Client's Requirements

Width : 0~2500mm or As Per Client's Requirements

Thickness : 0.3~1200mm or As Per Client's Requirements

Surface : No.1 No.2D No.2B BA No.3 No.4 No.6 No.7

Process : Hot/Cold Rolled

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ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

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.

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	C	Mn	P	S	Si
32.00-38.00	Balance	19.0-21.0	3.0-4.0	2.0-3.0	8xC-1.0 max	.07max	2.0 max	.045 max	.035 max	1.0 max

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%	-

Mechanical & Physical Properties :

Element	Alloy 20
Density	8.1 g/cm3
Melting Point	1443 °C (2430 °F)
Tensile Strength	Psi -80,000, MPa -551
Yield Strength (0.2%Offset)	Psi - 35,000, MPa - 241
Elongation	30 %

ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar

ASTM/ASME SB 473 Alloy20/UNS N08020 nickel-iron-chromium austenitic alloy bar Images

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