Alloy 20 Stainless Steel Sheet/Plate

1. Thickness:0.1mm - 80mm
Width:800mm - 2,000mm
Length:300mm - 12,000mm

2. Surface:2B/HL/NO.4/8K

3. Grades: Alloy 20

4. PVC film: Novacel(laser cutting)
Nitto(deep drawing)

GAUGE REFERENCE [restabs alignment="osc-tabs-left" responsive="false"] [restab title="Product Overview" active="active"]

Alloy 20 (UNS N08020) is an austenitic, nickel-iron-chromium based super alloy with additions of Copper and Molybdenum which provide resistance to hostile environments, pitting, and crevice corrosion. It is also stabilized with Columbium to minimize carbide precipitation during welding. Alloy 20 appears to fall between both the stainless and nickel categories as it contains characteristics of both. It was designed for maximum resistance to acid attack and demonstrates superior resistance to stress-corrosion cracking in boiling 20% to 40% sulfuric acid, and also has excellent general corrosion resistance to sulfuric acid and to chloride stress corrosion cracking. Alloy 20 has good mechanical properties at both ambient and elevated temperatures, up to approximately 930°F (500°C) and is readily fabricated by usual industrial processes.


Weight% C Cr Cu Fe Mn Mo Ni P Si S Nb (Cb)
Alloy 20 0.07max min:19.00
Balance 2.00 max min:2.00
0.045 max 1.00 max 0.035 max 8 XC min
1.00 max


Ultimate Tensile Strength (ksl) 0.2% Yield Strength (ksl) Elongation% (min) %Reduction of Area %(min) Hardness Brinell (max) Hardness Rockwell B (max)
80 35 30 - 217 95

(condition A)

Density Specific Gravity Specific Heat 32 to 212℉ Electrical Resistivity at 68℉ Poissons Ration Magnetic Permeability at 68℉ Modulus of Elasticity at 68℉
0.292lbs/in3 8.08 0.12 BTU/lb/℉ 644 ohm-cir mil/ft 0.31 1.002 Mu 29.3 x 106 psi



  • Chemical and allied industries
  • Food and dye production
  • Heat exchangers
  • Explosives
  • Tanks
  • Valves
  • Pickling racks
  • Manufacture of synthetic rubber and plastics
  • Pharmaceuticals
  • SO2 scrubbers and other severe environments
[/restab] [restab title="Additional Properties"]


  • Corrosion Resistance:
    >>Excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids.
    >>Nickel content aids in chloride ion stress and corrosion resistance.
    >>Additions of Copper and Molybdenum provide resistance to hostile environments, pitting, and crevice corrosion.
    >>Chromium adds to its resistance of oxidizing environments such as nitric acids.
    >>Columbium reduces the effects of carbide precipitation.
  • Weldability:
    >>All commonly used welding methods, with the exception of oxyacetylene, can be successfully used.
    >>The presence of Columbium tends to minimize the precipitation of carbides in the heat-affected zone, so the material may be used in the as-welded condition in most cases.
    >>Pre-heating is not required.
  • Heat Treatment:
    >>Cannot be hardened by heat treatment.
    >>Stabilized-annealing is done at 1750-1850°F, followed by water quenching.
    >>Stress relieving can be performed on annealed material up to 950°F.
  • Processing – Hot Forming:
    >>Heat uniformly to a starting temperature of 2100-2225°F. Finish forging before the stock drops below 1800°F.
    >>In order to stabilize the material after hot working operations, reheat at 1750-1850°F for a minimum of 1/2-hour per one inch of thickness and water quench.
  • Processing – Cold Forming:
    >>Alloy 20 has good cold formability. Bending, drawing and pressing, and other forming operations that occur in the production of fabricated items are readily performed.
    >>Alloy 20 can normally be press brake bent over a radius twice the materials thickness.
    >>After cold reductions of more than 15%, a final stabilizing annealing is often required.
  • Machinability:
    >>Because of Alloy 20′s high work-hardening rate the following are required:
    >>Only low surface-cutting speeds are possible compared with low-alloy standard austenitic stainless steel.
    >>Tools should be engaged at all times.
    >>Heavy feeds are important in getting below the work-hardened ‘skin’. 
[/restab] [restab title="Surface Finish"]

*Not all finishes are available in all alloys - (contact Yieh United Sales for more information)

#1 Finish Hot rolled, annealed and pickled.
#2D Finish A uniform, dull silver gray mill finish that is applied to thinner stainless steel coils,the thickness of which has been reduced by cold rolling.
#2B Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line.
#3 Finish A semi polished surface achieved by finishing with the equivalent of a 80 to 120 grit abrasive. This finish has a pronounced grit line.
#4 Finish Also called brushed, directional or satin finish. A is characterized by fine polishing grit lines that are uniform and directional in appearance. The final abrasive used in the process is 150 to 220 grit.
#4 Satin Brush Finish 150 to 180 grit finish A fine directional polish, typically used in the washroom accessories industry. Most 3.5″ floppy diskette cover plates have this finish.
#6 Finish Polished finish achieved with the equivalent of a 240 grit abrasive. Finer grit lines and higher reflectivity than a No. 4 finish.
#7 Finish Highly reflective surface obtained with the equivalent of a 320 grit abrasive. Minimal grit lines.
No. 8 or True #8 mirror This is the most reflective mirror finish on the market. All of the polishing, or “grit,” lines from the preliminary polishing operations are removed. The look is that of a glass mirror. Sometimes referred to as a non directional mirror finish, Super 8, No. 9, Perfect No. 10, and even No. 12 mirror.
CMP Super #8 mirror Chemical Mechanical Polished Super #8 mirror finished sheets are guaranteed to be free from any manufacturing defects. This product represents the ultimate in mirror polished stainless steel. It is available as a single-sided or double-sided mirror polished sheet.
Hairline finish 80 – 140 grit finish A well defined directional polish. Starting base substrate is a No. 4 finish sheet; these sheets are polished to provide a “continuous long grain” hairline look. A finish which is popular with architects for its aesthetic, it is equally popular with fabricators due to it’s ease of fabrication and finish matching properties after welding operations.
[/restab] [restab title="Innovative Technology"]


At Yieh United Corporation, we never stop improving and developing our technologies to go beyond our customer’s expectations. We strive towards these goals to produce reliable products and ensure they can be fully utilized throughout their lifetime.


[/restab] [restab title="Packing"]


Our alloy 20 stainless steel products are packed and labeled according to the regulations and customers’ requests.

stainless-steel-sheet-standardpackageNote: This is Yieh United Corporation’s standard seaworthy packing for stainless steel sheet metal.

stainless-steel-sheet-special-packageNote: This is Yieh United Corporation’s special packing for stainless steel sheet metal (Extra fee is needed).

[/restab] [restab title="FAQ"]


1. What is the minimum order quantity (MOQ)?
- Normally, the MOQ for our stainless steel sheet is 200 Kg. If we have any excess inventory of stainless steel sheet, there’s no MOQ requirement. You can ask us to check when you are interested in purchasing them.

2.What is the payment method?

- For new customers: 30%T/T deposit 70%T/T Before shipment.
– For partners and distributors, 30%T/T deposit 70% T/T Against B/L Copy.

3.What is the acceptable currency?
- We accept USD, EUR and RMB.

4.What is the delivery time?

- 5 days in advance.

5.Where is the loading port?
- Normally, our loading ports are Shanghai, Tianjin, and Shenzhen. You can choose anyone of them, or you can select the other ports.

6.What is the delivery term?

7.Do you offer free samples?

- Yes, based on our stock status, we will send our customer free samples. The express fee is to be paid by our customers.

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