Silver Tubes is one of the prominent in exporting & stocking of Alloy 20 Sheets, plates, coils, etc., which provides highly safe and reliable operations. The surface of flame-hardened Alloy 20 Sheets is likely to have poorer wear resistance than the carbon-rich case of a carburized steel of equal hardness. Exceptions are nitrided parts in Alloy 20 Plates, which have better wear resistance than would be expected from the carbon content alone. Fully hardened-and-tempered, low-carbon Alloy 20 Coils have a good combination of strength and toughness, both at room and low temperature. Care must be taken in heat treatment of Carpenter 20 Sheets, however, because toughness may be decreased substantially by temper brittleness. In Carpenter 20 Plates, a form of embrittlement is developed by slow cooling through the range of 900 Degree F to 600 Degree F, or by holding or tempering in this range.
For any combination of Carpenter 20 Coils and heat treatment, three factors tend to decrease toughness: low service temperature, high loading rates, and stress concentrations or residual stress. Nickel, aluminium, and silicon in UNS N08020 Sheets are examples of the elements that form compounds in the steel. While in a molten state, these UNS N08020 Plates are exposed to a vacuum which removes hydrogen and, to a lesser degree, oxygen and nitrogen. Tungsten and vanadium will form carbides in UNS N08020 Coils, both of which increase the hardness and stability of the finished product.
|Specifications||ASTM B463, ASME SB463|
|Standards||ASTM, ASME and API|
|Size||1000 mm x 2000 mm, 1220 mm x 2440 mm, 1500 mm x 3000 mm, 2000 mm x 2000 mm, 2000 mm x 4000 mm|
|Thickness||0.3 mm to 120mm|
|Form||Coils, Foils, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) & Angle, Channel, Tray Etc.|
|Hardness||Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.|
|Alloy 20||0.07 max||2.00 max||1.00 max||0.035 max||3.00 – 4.00||32.00 – 38.00||19.00 – 21.00||29.85 min*||2.00 – 3.00||0.045 max|
|Element||Density||Melting Point||Tensile Strength||Yield Strength (0.2%Offset)||Elongation|
|Alloy 20||8.1 g/cm3||1443 °C (2430 °F)||Psi -80,000, MPa -551||Psi - 35,000, MPa - 241||30 %|
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