We are professional SCNM439 JIS SNCM439 Forged forging Steel Round Bars Rods Square rectangular rectangle Flat Hex Bars,SCNM439 Forged Forging Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tube tubings barrels Casing Cases Shells cylinders hubs housings,SCNM439 Seamless Rolled Steel Rings,SCNM439 Forged Forging Steel rings,SCNM439 Forged Forging Steel Blocks Discs Disks Plates,SCNM439 Forged Forging Steel Gear Shafts Pinion Shafts Spindles,and other SCNM439 forged forging parts Forged Products forged forging pieces forged forging steel components materials from china
For quenching and tempering.
Steel grade |
Chemical contents [%] |
|||||||||||
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
W |
V |
Ti |
Cu |
|
SCNM439 JIS SNCM439 |
0,32- 0,4 |
0,5 -0,8 |
0,17 -0,37 |
MAX 0,035 |
MAX 0,035 |
0,9-1,2 |
0,9- 1,2 |
0,15-0,25 |
MAX 0,2 |
MAX |
MAX 0,05 |
MAX 0,25 |
Technological treatment processes |
Possibility of application |
Temperature, °C |
||
Plastic forming | Forging |
+ |
850-1050 |
|
Rolling |
+ |
850-1180 |
||
Heat treatment | Heat hardening | Hardening |
+ |
820-860 |
Tempering |
+ |
540-680 |
||
Annealing | Normalizing |
+ |
850-880 |
|
Annealing | Softening |
+ |
650-700 |
1.6511 | Value |
Mechanical properties | |
Tensile strength Rm (MPa) | >=830 |
Elongation A5 (%) | >=15 |
Reduction of area Z (%) | >=55 |
Yield point Re (R0,2) (MPa) | >=690 |
Notched bar impact work KU2 (J) | >=96 |
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