| Quality | 20MnCr5 |
| Category | Special steels |
| Standard ref. |
EN 10084 |
| Werkstoff nr. | 1.7147 |
Descrizione
It is an excellent case-hardening steel which combines the high hardness of the cement layer with an excellent core toughness. It is easily hot machinable and weldable. It can be supplied in rolled bars, peeled bars or drawn bars, in addition to forged bars. It is the most suitable among special steels for the manufacturing of mechanical elements such as medium size toothed wheels, joints and axles for the manufacturing of vehicles.
Chemical composition 20MnCr5 (%)
|
C
|
Mn
|
P
|
S
|
Cr
|
Si
|
|||
|
min
|
max
|
min
|
max
|
max
|
max
|
min
|
max
|
max
|
|
0,17
|
0,22
|
1,10
|
1,40
|
0,035
|
0,035
|
1,00
|
1,30
|
0,40
|
Mechanical characteristics 20MnCr5
|
Hot-rolled with hardening core
(Ø of the specimen in mm) |
||||
|
Ø 11
|
Ø 30
|
Ø 63
|
||
| Yield Limit, Rp0,2 (MPa) min |
930
|
690
|
540
|
|
| Tensile Strength Rm (MPa) |
min |
1230
|
930
|
780
|
| max |
1570
|
1230
|
1080
|
|
| Elongation A (%) min |
7
|
8
|
9
|
|
| Resilience Kv (J) min |
17,5
|
20
|
25
|
|
| Hardness HB | min |
363
|
278
|
232
|
| max |
438
|
363
|
327
|
|
Matches table 20MnCr5
|
Italiy (UNI)
|
Europe (EN)
|
Germany (DIN)
|
France (AFNOR)
|
United Kingdom (BS)
|
USA (AISI/SAE)
|
|
20MnCr5
|
20MnCr5
|
20MnCr5
|
20MC5
|
–
|
–
|
