Carbon Steel / MED-C
Medium Carbon Steels (Engineering Steels)
Medium carbon engineering steels offering high strength, heat treatment capability, and excellent machinability. Preferred for precision machine parts, gears, shafts, and forging applications.
Technical Specifications
Grades
C35 (1.1180), CK45 (1.1191)
Tolerance
h9, h10, h11
Size Range
Round: 4-100mm | Hex: 6-60mm | Square: 6-60mm
Standards
EN 10277, EN 10083, DIN 1652, ASTM A108
Key Features
- High tensile and yield strength
- Heat treatable (quenching + tempering)
- Induction surface hardening capability
- Excellent machinability
- Available in 3 forms (round, hex, square)
- Precision tolerance and surface via cold drawing
- Consistent metallurgical structure
- High plasticity suitable for forging
Applications
- Gears and gearbox components
- Shafts and axles
- Crankshafts and camshafts
- Engine and transmission parts
- High strength class bolts and nuts
- Precision machine shafts and pins
- Forged parts and die components
- Hydraulic cylinder rods
Dimension Table
| Form | Diameter/AF (mm) | Tolerance | Standard Length (m) | Surface Finish |
|---|---|---|---|---|
| Round | 4 - 20 | h9 | 3 (max 6) | Ra 0.8 - 1.6 |
| Round | 20 - 50 | h9 / h10 | 3 (max 6) | Ra 0.8 - 1.6 |
| Round | 50 - 100 | h10 / h11 | 3 (max 6) | Ra 1.6 - 3.2 |
| Hexagon | 6 - 30 | h9 | 3 (max 6) | Ra 0.8 - 1.6 |
| Hexagon | 30 - 60 | h10 / h11 | 3 (max 6) | Ra 1.6 - 3.2 |
| Square | 6 - 30 | h9 | 3 (max 6) | Ra 0.8 - 1.6 |
| Square | 30 - 60 | h10 / h11 | 3 (max 6) | Ra 1.6 - 3.2 |
Technical Notes
- 01Carbon content ranges between 0.32% - 0.50%.
- 02CK45 is the most widely used engineering steel (DIN equivalent: 1.1191).
- 03C35 is ideal for applications requiring medium strength and good machinability.
- 04Tensile strength of 600-900 N/mm2 achievable via quenching + tempering.
- 05Surface hardness of 50-58 HRC achievable via induction hardening.
- 06Pre-heating to 150-300°C recommended before welding; stress relief annealing required after welding.
- 07Standard length is 3 meters, available up to 6 meters on request.