MEDIUM CARBON STEEL
NORM: PN/EN 10083-2
APPLICATION:
Steel adjusted to the parts exposed on heavy loadings and more resistant to abrasion. Such as: wheels, rims, toothed shafts, cylinders, shafts, axles, pins, eccentrics;
TECHNOLOGICAL INFORMATION:
After soft annealing, steel becomes machinable; if normalised and soft annealed, steel becomes adjusted for the mechanical cutting.
SEMI-FINISHED PRODUCTS:
After soft annealing, steel becomes machinable; if normalised and soft annealed, steel becomes adjusted for the mechanical cutting.
CHEMICAL COMPOSITION:
| C | Mn | Si | P | S | Cr | Ni | Mo | V | W | Ti | Cu | Inne |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0,57 - 0,65 | 0,60 - 0,90 | Max 0,40 | Max 0,045 | Max 0,045 | Max 0,40 | Max 0,40 | Max 0,10 | - | - | - | - | Cr+Mo+Ni max 0,63 |
MECHANICAL PROPERTIES:
| Effect of the cross-section on mechanical properties | |||
| If heat treated | |||
| Diameter d, mm
Thickness of the flat bar t, mm |
≤ 16
≤ 8 |
16 – 40
8 – 20 |
40 – 100
20 – 60 |
| Ultimate tensile strength, Rm, MPa | 850 – 1000 | 800 – 950 | 750 – 900 |
| Yield stress Re (Rp0.2), MPa | ≥ 580 | ≥ 520 | ≥ 450 |
| Elongation, A, % | ≥ 11 | ≥ 13 | ≥ 14 |
| Reduction of area, Z, % | ≥ 25 | ≥ 30 | ≥ 35 |
| If normalised | |||
| Diameter, d, mm
Thickness of the flat bar t, mm |
≤ 16
≤ 16 |
16 – 100
16 – 100 |
100 – 250
100 – 250 |
| Ultimate tensile strength, Rm, MPa | ≥ 710 | ≥ 670 | ≥ 650 |
| Yield stress Re (Rp0.2), MPa | ≥ 380 | ≥ 340 | ≥ 310 |
| Elongation, A, % | ≥ 10 | ≥ 11 | ≥ 11 |
Technological treatment processes:
| Technological treatment processes | Possible application | Temperature, °C | ||
| Hot forming | Forging | + | (1050 – 850) | |
| Rolling | + | (1050 – 850) | ||
| Treatment | Heat treatment | Quenching | + | 810-850/w,o |
| Tempering | + | 550 – 660 | ||
| Precipitation strengthening | Supersaturation | – | – | |
| Ageing | – | – | ||
| Annealing | Normalising | + | 820 – 880 | |
| Soft annealing | + | (650 – 700) | ||
| Thermochemical treatment | Carburising | – | – | |
| Other | – | – | ||
INTERNATIONAL STEEL GRADES:
| ISO | European Union | Russia | |||
| ~C60 | ISO 683-1 1987 | C60 | EN 10083-2 1996 | ~60 | GOST 1050 1988 |
| US | Japan | China | |||
| ~M 1060 | ASTM A 29-93 | ~S 60 C | JIS G 4051 1979 | ~60 | GB 699-88 |
