EN1A Free Cutting Hex Bar

About EN1A Free Cutting Hex Bar

EN1A is a grade of free-cutting steel, often used in machining due to its excellent machinability. Heres a detailed description of EN1A Free Cutting Bright Bar:

EN1A Free Cutting Bright Bar Description

Material Name EN1A Free Cutting Steel

Grade EN1A

Type Bright Bar

Composition (Typical):

- Carbon (C) 0.08% - 0.13%

- Manganese (Mn) 0.50% - 0.70%

- Sulfur (S) 0.20% - 0.35%

- Phosphorus (P) 0.05%

- Other Elements Minimal amounts of other elements such as silicon and trace elements.

Properties

- Tensile Strength Approximately 450 MPa (65,000 psi)

- Yield Strength Approximately 250 MPa (36,000 psi)

- Elongation at Break Typically around 20% in standard conditions

- Hardness Generally in the range of 160-200 HB (Brinell Hardness)

Key Features

- Excellent Machinability Contains lead or sulfur, which significantly improves machinability, making it ideal for complex and precise machining operations.

- Bright Finish The bright bar has a smooth, polished surface finish, often achieved through processes like cold drawing or bright annealing.

- High Surface Quality Provides a good surface finish, which is beneficial for aesthetic applications and minimizes the need for further finishing.

Applications

- Precision Components Used in the manufacturing of precision components, shafts, bolts, nuts, and other parts requiring high-quality machining.

- Automotive Suitable for producing various automotive parts, including engine components and fittings.

- Engineering Common in general engineering and manufacturing where ease of machining is critical.

- Fasteners Often used in the production of screws, fasteners, and other threaded components.

Fabrication

- Machining Excellent for turning, drilling, and milling due to its free-cutting properties.

- Welding Not typically used for welding due to its composition; welding can affect its machinability and strength.

- Cold Drawing Often processed through cold drawing to achieve the desired dimensions and surface finish.

Standards and Specifications

- Common Standards EN 1A is covered under various standards like EN 10087 for free-cutting steels. The specifications might be aligned with national or international standards for steel grades.

Finish and Treatment

- Surface Finish The bright bar finish is achieved through a bright annealing process, which enhances surface quality and dimensional accuracy.

- Heat Treatment Can be heat treated if necessary, but generally not required due to its inherent machinability and mechanical properties.

EN1A Free Cutting Bright Bar is ideal for applications where high precision and ease of machining are required. Its free-cutting properties make it a preferred choice for high-volume production of machined parts.