X20Cr13, 1.4021, 1.4022, ASTM 420 – Stainless steel

Grade X20Cr13 steel is characterized by high hardness and strength, making it an ideal choice for applications requiring wear resistance. Due to its martensitic structure, it achieves excellent mechanical properties after heat treatment.

Key properties of X20Cr13, 1.4021, 1.4022 steel

• Hardness: X20Cr13 steel achieves hardness up to 50 HRC after proper heat treatment.
• Strength: Significant tensile strength, allowing for use in demanding mechanical applications.
• Resistance to corrosion: Good corrosion resistance in mildly aggressive environments.
• Magnetic properties: The steel has ferromagnetic properties.

Chemical composition of X20Cr13, 1.4021, 1.4022 steel

The chemical composition of grade X20Cr13 steel includes several key elements that together ensure its characteristic properties. The typical composition of this steel is:

• Chromium (Cr): 12–14% – Ensures corrosion resistance and hardness.
• Carbon (C): 0.16–0.25% – Contributes to the hardness and strength of the steel.
• Manganese (Mn): Max. 1.0% – Aids in heat treatment and improves toughness.
• Silicon (Si): Max. 1.0% – Improves strength and oxidation resistance.
• Sulphur (S): Max. 0.03% – May affect machinability.
• Phosphorus (P): Max. 0.04% – May affect machinability.

Typical applications of grade X20Cr13, 1.4021, 1.4022 steel

Grade X20Cr13 steel is widely used in various industrial applications due to its exceptional properties. The most common applications include:

Tool manufacturing

X20Cr13 steel is commonly used in the production of tools such as cutting tools, knives, surgical instruments, and woodworking tools. Its high hardness and strength make it an ideal choice for these applications.

Automotive industry

In the automotive industry, grade X20Cr13 steel is used for the production of components that require high strength and wear resistance. These include valves, shafts, and other mechanical parts.

Mechanical engineering

Due to its excellent strength and corrosion resistance, grade X20Cr13 steel is used in engineering applications. These include pumps, valves, and compressors that must withstand high pressure and wear.

Power industry

In the energy sector, grade X20Cr13 steel is used for the production of components for power plants. These include turbine blades and other parts that must withstand high temperatures and pressure.

Petrochemical industry

Grade X20Cr13 steel is also used in the petrochemical industry. It is used for the production of equipment that must withstand corrosive environments, such as piping and valves.

The material is weldable, provided that welding electrodes of a very similar material are used. This steel is generally easier to process than “standard” austenitic steels. The heat treatment condition for 1.4021 material is QT700, and it should be hot worked in the temperature range of 1100–800 °C. Slow cooling after hot forming.

Based on the above information, it is clear that grade X20Cr13, 1.4021, 1.4022, ASTM 420 steel is a material with exceptional properties. These properties make it essential for a wide range of industrial applications. Its chemical composition and mechanical properties ensure high performance and durability in demanding conditions.