Stainless Steel 1.4114 / AISI 440F
General Technical Characteristics
Stainless steel 1.4114 / AISI 440F is a martensitic corrosion-resistant steel with increased carbon and sulfur content, designed for manufacturing parts with high hardness and improved machinability. This grade is a modification of AISI 440 steel with sulfur addition, which significantly enhances machinability on automatic machines.
AISI 440F steel combines high hardness, wear resistance, and satisfactory corrosion resistance. After heat treatment, the material can achieve high strength and stable performance characteristics.
Due to its improved machinability, stainless steel 1.4114 is widely used in mass production of precision components.
Applications
Stainless steel 1.4114 / AISI 440F is used in various industries:
- production of automatic-machined parts
- manufacturing of shafts and axles
- components for pump equipment
- valves and fittings
- bearings and bushings
- instrument engineering
- wear-resistant machine parts
The material is especially востребован where a combination of machining precision and high hardness is required.
Features and Advantages
Key advantages of stainless steel 1.4114:
- excellent machinability by cutting
- high hardness after heat treatment
- good wear resistance
- high strength
- stable mechanical properties
- suitability for mass production
The addition of sulfur makes AISI 440F an optimal choice for automatic machining production.
Chemical Composition
| Element | Content % |
|---|---|
| Chromium (Cr) | 16–18 |
| Carbon (C) | 0.85–0.95 |
| 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 440F steel (after heat treatment):
- Tensile Strength (Rm): 800–1000 MPa
- Yield Strength (Rp0.2): ≥ 600 MPa
- Elongation: ≥ 8–10 %
- Hardness: up to 55–60 HRC
High hardness, wear resistance, and excellent machinability make stainless steel 1.4114 / AISI 440F an ideal material for manufacturing precision mechanical components operating under high loads and wear conditions.
