Alloy 20C Nickel Alloy Steel

Description

Alloy 20C is a nickel-based alloy known for its excellent corrosion resistance, especially in acidic environments. It offers high strength, good toughness, and good formability. It is commonly used in various industries where resistance to corrosion and chemical attack is required.

Applications

Alloy 20C is widely used in chemical processing, pharmaceutical, food processing, petrochemical, and oil and gas industries. It is suitable for applications such as tanks, reactors, heat exchangers, piping systems, valves, pumps, and other components handling corrosive substances.

Blacksmith Applications

Alloy 20C is also used in blacksmithing applications where resistance to corrosion and high temperatures is crucial. It can be utilized in the manufacturing of tools, such as hammers, anvils, tongs, and other equipment requiring strength and resistance to acidic environments.

Alloy 20C Forging Temperature

Forging of Alloy 20C is typically performed in the temperature range of 2000°F - 2200°F (1093°C - 1204°C), followed by slowly cooling in a controlled manner to relieve stresses.

Alloy 20C Heat Treatment

Alloy 20C Annealing Temperature

Annealing of Alloy 20C is usually carried out at 1800°F - 1950°F (982°C - 1066°C) for an appropriate duration, followed by air cooling or water quenching.

Alloy 20C Normalizing Temperature

Normalizing can be done at 1725°F - 1850°F (941°C - 1010°C) with sufficient soak time, followed by air cooling or rapid cooling in water.

Alloy 20C Hardening Temperature

Alloy 20C does not respond to conventional hardening methods. It achieves its strength through cold working and precipitation hardening processes.

Alloy 20C Tempering Temperature

Tempering is not applicable to Alloy 20C as it does not harden by heat treatment.

Machinability

Alloy 20C has a lower machinability rating compared to carbon steels. It requires appropriate cutting tools and techniques, and slower speeds to achieve good results.

Weldability

Alloy 20C exhibits good weldability using appropriate procedures. Preheating and post-weld heat treatment may be required to reduce the risk of sensitization and maintain corrosion resistance.

Chemical Analysis

The chemical make up of this steel.

Chemical Content (%)
Nickel (Ni)32.5-38
Chromium (Cr)19-21
Molybdenum (Mo)2-3
Copper (Cu)3-4
Iron (Fe)Balance
Carbon (C)0.06 max
Manganese (Mn)2 max
Silicon (Si)1 max
Phosphorus (P)0.045 max
Sulfur (S)0.035 max