Stainless Steel 1.4037 / AISI 420
General Technical Characteristics
Stainless steel 1.4037 / AISI 420 is a martensitic corrosion-resistant steel with increased carbon content, designed to achieve high hardness and strength after heat treatment. This grade belongs to the AISI 420 family and combines good wear resistance, strength, and satisfactory corrosion resistance.
AISI 420 steel is widely used in mechanical engineering and tool manufacturing due to its ability to achieve high hardness after quenching and tempering. At the same time, stainless steel 1.4037 maintains corrosion resistance in atmospheric conditions as well as in mildly aggressive environments.
The material is well suited for machining in the annealed condition and for heat treatment to achieve the required performance characteristics.
Applications
Stainless steel 1.4037 / AISI 420 is used in various industries:
- production of cutting tools
- knives and blades
- medical instruments
- components for pump and valve equipment
- shafts and axles
- instrument engineering
- wear-resistant machine parts
Due to the combination of strength and hardness, AISI 420 is widely used for manufacturing parts operating under increased loads.
Features and Advantages
Key advantages of stainless steel 1.4037:
- high hardness after heat treatment
- good wear resistance
- sufficient corrosion resistance
- high strength
- ability to tailor properties through heat treatment
- good polishability
These properties make AISI 420 a versatile material for the production of tools and mechanical components.
Chemical Composition
| Element | Content % |
|---|---|
| Chromium (Cr) | 12–14 |
| Carbon (C) | 0.16–0.25 |
| Manganese (Mn) | ≤ 1 |
| Silicon (Si) | ≤ 1 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | balance |
Mechanical Properties
Main mechanical properties of AISI 420 steel (after heat treatment):
- Tensile Strength (Rm): 700–900 MPa
- Yield Strength (Rp0.2): ≥ 450 MPa
- Elongation: ≥ 12 %
- Hardness: up to 48–52 HRC
Due to its high strength, hardness, and wear resistance, stainless steel 1.4037 / AISI 420 is a reliable material for manufacturing cutting tools, medical instruments, and components operating under increased mechanical loads.
