C15R steel is a low-carbon structural steel that is distinguished by its increased sulfur content, which is beneficial for improving its machinability. It is particularly recommended for the production of parts requiring intensive machining. It is widely used in the engineering and automotive industries, especially where it is necessary to maintain precise dimensions with a large number of manufactured parts. C15R steel has good tensile strength and good ductility, making it suitable for a wide range of applications. Due to its low carbon content, it is well weldable. It can be heat treated to improve its mechanical properties.
C15R steel chemical composition
| Designation | C % max | Mn % max. | Si % max | P % max. | S % max. | Ni % max. | |
|---|---|---|---|---|---|---|---|
| C15R | 1.1140 | 0,12 - 0,18 | 0,35 - 0,65 | 0,40 | 0,035 | 0,020-0,040 | 0,30 |
Steel C15R mechanical properties
| Mechanical properties | ||
|---|---|---|
| Rp0,2 [MPa] | Rm [MPa] | Elongation % |
| ≥280 | 430-550 | ≥20-25 |
C15R steel application
C15R steel, thanks to its increased machinability, is particularly useful in the production of turned, milled and other complex machine parts. It is most often used for the production of:
- screws
- nuts
- pins
- axles
- gears
- precision mechanical parts requiring intensive machining.
Its good machinability makes C15R steel the preferred choice for series production, especially for parts with complex geometries.
| EU EN | Steel number | Sweden | AISI |
| C35 | 1.1140 | SS1370 | 1015R |
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