Free Cutting Steel
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Free-Cutting Steel – Efficiency and Precision for Machining
Free-cutting steel is a specially developed material designed for applications with high demands on machinability and precision. Its composition and optimized processing properties make it the first choice for the serial production of precision parts. The key characteristic of this material is its cost-efficiency in machining, enabling significantly faster production processes.
Excellent Machinability
Free-cutting steel is alloyed with elements such as sulfur, phosphorus, or lead to ensure outstanding machinability. These additives allow shorter machining times, reduced tool wear, and high dimensional accuracy in the production of turned and milled components.
Various Alloys for Specific Requirements
The variety of available free-cutting steels allows for a targeted selection based on specific requirements. Common materials include:
- 9SMn28 (1.0715): A manganese-alloyed free-cutting steel with good machinability and moderate strength.
- 11SMn30 (1.0711): With a high sulfur content for optimal machining and excellent surface quality.
- 11SMnPb30 (1.0718): A lead-alloyed free-cutting steel that meets the highest standards for precision and efficiency.
Technical Specifications
Grades and Standards
- 9SMn28 (1.0715): According to EN 10087, suitable for general turning parts.
- 11SMn30 (1.0711): According to EN 10087, ideal for fast machining with excellent surface finish.
- 11SMnPb30 (1.0718): According to EN 10087, specifically for high-precision components.
Dimensions
- Round bars: Diameters from 5 mm to 80 mm.
- Hexagonal bars: Across flats from 10 mm to 60 mm.
- Flat bars: Widths from 15 mm to 150 mm.
Tolerances
Free-cutting steel is delivered with tight tolerances (e.g. h9 or h11), enabling precise further processing without additional adjustments.
Applications
Mechanical Engineering
In mechanical engineering, free-cutting steel is primarily used for manufacturing precision parts such as screws, bolts, shafts, and small machine elements. Its fast machinability reduces production costs and increases efficiency.
Automotive Industry
In the automotive industry, free-cutting steel is used for components requiring high dimensional accuracy, such as bushings, fasteners, and sensor housings. Its efficiency makes it ideal for mass production.
Electrical and Sanitary Industry
Free-cutting steel is also used in the electrical and sanitary sectors, for example in fittings, connectors, and housings. Its excellent machinability ensures high surface quality and precise fitting.
Why Choose Free-Cutting Steel?
Free-cutting steel impresses with its outstanding machining properties, enabling precise results and high cost-efficiency. Especially in series production, it saves time and cost due to reduced machining time and lower tool wear. Whether in mechanical engineering, the automotive industry or the electrical sector – free-cutting steel is the ideal solution for demanding machining tasks.
FAQ – Free-Cutting Steel
1. What is free-cutting steel?
Free-cutting steel is a specially alloyed material optimized for machining. It allows fast and precise processing, especially for turning and milling operations.
2. Which grades are available for free-cutting steel?
Typical grades include 9SMn28 (1.0715), 11SMn30 (1.0711), and 11SMnPb30 (1.0718), each offering specific properties for various requirements.
3. Which dimensions are available for free-cutting steel?
Free-cutting steel is available in various shapes and sizes, such as round bars from 5 mm to 80 mm or hexagonal bars with across flats from 10 mm to 60 mm.
4. What are the machining advantages of free-cutting steel?
Free-cutting steel offers excellent machinability, reduced tool wear, and enables economical series production with high dimensional accuracy.
5. Is free-cutting steel environmentally friendly?
Its optimized machining properties reduce energy consumption and material waste during production, contributing to more sustainable manufacturing.