TOUGHENING STEEL
NORM: PN/EN 10083-3
Anmeldung:
Steel susceptible to very loaded axles, shafts, crankshafts, gears. Also adjusted for the parts which are exposed on variable movements bending, twisting, wearing, tear etc.
TECHNOLOGISCHE INFORMATIONEN::
After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.
Zwischenprodukte:
After soft annealing steel becomes machinable ( by improved shearability) and adjusted for the mechanical cutting.
Chemische Zusammensetzung:
C | Mn | Si | P | S | Cr | Ni | Mo | V | W | Ti | Cu | Inne |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0,26 - 0,34 | 0,50 - 0,80 | Max 0,40 | Max 0,025 | Max 0,035 | 1,80 - 2,20 | 1,80 - 2,20 | 0,30 - 0,50 | - | - | - | - | - |
Mechanische Eigenschaften:
Mechanical properties of a product with diameter d ≤ 16 mm | |||||||
Property | Symbol | Unit | After heat treatment | ||||
Ultimate tensile strength | Rm | MPa | 1250 – 1450 | ||||
Yield stress | Re (Rp0,2) | MPa | ≥ 1050 | ||||
Elongation | A | % | ≥ 9 | ||||
Reduction of area | Z | % | ≥ 40 | ||||
Impact energy | KV | J | ≥ 30 | ||||
The influence of the element’s cross-section on mechanical properties | |||||||
Diameter d, mm
Thickness of the flat bar t, mm |
16 – 40
8 – 20 |
40 – 100
20 – 60 |
100 – 160
60 – 100 |
160 – 250
100 – 160 |
|||
Rm, MPa | 1250 – 1450 | 1000 – 1300 | 1000 – 1200 | 900 – 1100 | |||
Re (Rp0,2), MPa | ≥ 1050 | ≥ 900 | ≥ 800 | ≥ 700 | |||
A, % | ≥ 9 | ≥ 10 | ≥ 11 | ≥ 12 | |||
Z, % | ≥ 40 | ≥ 45 | ≥ 50 | ≥ 50 | |||
KV, J | ≥ 30 | ≥ 35 | ≥ 45 | ≥ 45 |
Technologische Verarbeitung:
Technological treatment processes | Possible application | Temperature, °C | ||
Hot forming | Forging | + | (1050 – 850) | |
Rolling | + | (1180 – 850) | ||
Treatment process | Heat treatment | Quenching | + | 830-860/w,o |
Tempering | + | 540 – 660 | ||
Precipitate strengthening | Supersaturation | – | – | |
Ageing | – | – | ||
Annealing | Normalising | + | (850 – 880) | |
Soft annealing | + | (650 – 700) | ||
Thermochemical treatment | Carburising | – | – | |
Other | – | – |
INTERNATIONALE STAHLSORTEN:
ISO | EN | Russia | |||
31CrNiMo8 | ISO 683-1 1987 | 30CrNiMo8 | EN 10083-1 1996 | – | – |
US | Japan | China | |||
– | – | – | – | – | – |