Stainless Steel 1.4029 / AISI 420F
General Technical Characteristics
Stainless steel 1.4029 / AISI 420F is a martensitic corrosion-resistant steel with increased sulfur content, specifically developed to improve machinability on machine tools. This grade belongs to the AISI 420 steel family and is characterized by high hardness after heat treatment, good wear resistance, and stable mechanical properties.
Due to the addition of sulfur, AISI 420F steel demonstrates excellent machinability by cutting, making it an ideal material for the production of parts by automatic machining. At the same time, stainless steel 1.4029 maintains sufficient corrosion resistance in moderately aggressive environments and atmospheric conditions.
The material can be subjected to quenching and tempering to achieve high strength and hardness.
Applications
Stainless steel 1.4029 / AISI 420F is widely used in various industrial sectors:
- production of fasteners
- manufacturing of shafts and axles
- automatic-machined parts
- components for pump and valve equipment
- instrument engineering
- manufacturing of machine and mechanism parts
- production of cutting tools
High machinability makes AISI 420F a widely used material for mass production of metal components.
Features and Advantages
Key advantages of stainless steel 1.4029:
- excellent machinability on automatic lathes
- high hardness after heat treatment
- good wear resistance
- sufficient corrosion resistance
- high strength
- stable mechanical properties
Due to these characteristics, AISI 420F is widely used for the production of precision mechanical parts.
Chemical Composition
| Element | Content % |
|---|---|
| Chromium (Cr) | 12–14 |
| Carbon (C) | 0.26–0.35 |
| Sulfur (S) | 0.15–0.35 |
| Manganese (Mn) | ≤ 1 |
| Silicon (Si) | ≤ 1 |
| Phosphorus (P) | ≤ 0.04 |
| Iron (Fe) | balance |
Mechanical Properties
Main mechanical properties of AISI 420F steel (after heat treatment):
- Tensile Strength (Rm): 700–900 MPa
- Yield Strength (Rp0.2): ≥ 450 MPa
- Elongation: ≥ 12 %
- Hardness: up to 50 HRC
High hardness, good wear resistance, and excellent machinability make stainless steel 1.4029 / AISI 420F an optimal material for manufacturing machine parts, instruments, and mechanical components that require high precision and reliability.
