EN31 Alloy Flat Bar Description
EN31 is a high-carbon alloy steel often used in applications that require high strength, toughness, and wear resistance. It is widely used in the manufacturing of components such as shafts, gears, and other mechanical parts. Heres a detailed description of EN31 alloy flat bars:
Material Composition
- Carbon (C) 0.90% - 1.10%
- Chromium (Cr) 0.80% - 1.20%
- Manganese (Mn) 0.50% - 0.80%
- Silicon (Si) 0.20% - 0.35%
- Nickel (Ni) Up to 0.30% (may vary)
- Sulfur (S) Up to 0.035%
- Phosphorus (P) Up to 0.035%
Properties
- Hardness EN31 can be heat-treated to achieve a high hardness level, typically ranging from 56 to 60 HRC (Rockwell Hardness).
- Strength Known for its excellent tensile strength and impact resistance, making it suitable for heavy-duty applications.
- Wear Resistance Offers good wear resistance due to its high carbon content, which contributes to its hardness and durability.
- Toughness Provides good toughness, though this can be adjusted through heat treatment to balance hardness and toughness.
Applications
- Mechanical Components Ideal for manufacturing shafts, gears, and bearings where high strength and durability are required.
- Tools Used for tools and dies that need high wear resistance and impact strength.
- Engineering Parts Suitable for various engineering applications that demand high performance and reliability.
Surface Finish
- Standard Finish EN31 flat bars typically come with a standard mill finish but can be further machined or ground to achieve desired surface conditions.
- Custom Finishing Can be supplied in a range of finishes depending on specific application requirements.
Heat Treatment
- Hardening Heat to approximately 820C - 850C (1500F - 1560F) and quench in oil or water. The exact temperature may vary based on the desired hardness and application.
- Tempering To achieve the desired hardness and relieve stresses, temper at temperatures between 150C - 200C (302F - 392F) for various durations, depending on the required properties.
Dimensions
- Thickness and Width Available in various thicknesses and widths, which can be customized based on specific project requirements.
- Length Typically available in standard lengths, with custom lengths often available upon request.
Advantages
- High Performance Provides excellent strength and wear resistance for demanding applications.
- Versatility Suitable for a wide range of applications in mechanical and structural components.
- Customizable Can be heat-treated and machined to meet specific performance and dimensional requirements.
EN31 alloy flat bars are a versatile and high-performance material choice for many engineering and manufacturing applications where strength, durability, and wear resistance are crucial.