ASTM B473, CB-3, UNS N08020, W.Nr.2.4660, AWS 130
Alloy 20 Springs have excellent mechanical properties and they can be easily fabricated. Alloy 20 Springs have moderate to good corrosion resistance. Carpenter 20 Springs are used extensively in petrochemical and refining applications. Torqbolt is a prominent Alloy 20 Spring supplier in India.
Alloy 20 CB 3 is an austenitic stainless steel with excellent resistance to hot sulphuric acid and many other aggressive environments that would readily attack stainless steel 316. This alloy exhibits superior resistance to stress-corrosion cracking in boiling 20 to 40% sulphuric acid.
|Nominal Composition||Chromium(Cr): 19.0 - 21
Nickel(Ni): 32.0 - 38.0
Molybdenum(Mo): 2.0 - 3.0
Copper(Cu): 3.0 - 4.0
|Modulus of Elasticity (E)||26 x 106 psi|
|Modulus of Rigidity (G)||10675 ksi|
|Coefficient of Expansion||8.16 µin/in.-°F (70°F)|
|Electrical Resistivity||65 ohm -cir mil/ft.|
|Thermal Conductivity||7.05 Btu/(hr/ft2/in/°F)|
|Min Size||0.018 in (0.47 mm)|
|Max Temp||537oC (1000oF)|