Equivalent
grades |
GB |
DIN |
AISI |
DAIDO |
BOHLER |
| Cr8Mo1VSi |
- |
- |
DC53 |
K340 |
Chemical
Composition |
C |
Si |
Mn |
Cr |
P |
S |
Mo |
V |
| 0.90-1.10 |
0.80-1.20 |
0.40 MAX |
7.50-8.50 |
0.03MAX |
0.03MAX |
1.80-2.20 |
0.20-0.50 |
Available
size |
Round Bar |
Diameter |
Length |
| 16-800mm |
2000-6000mm |
| Flat Bar |
Thickness |
Width |
Length |
| 16-400mm |
100-800mm |
2000-6000mm |
Surface
condition |
Black surface/ Grinded/ Machined |
Annealed
hardness |
HB225MAX |
| Characteristics |
Uniform distribution of fine carbides
Excellent galling & wear resistance
Exceptional toughness & fatigue resistance
High temper resistance to support PVD & nitride surface treatments
Machining & grinding characteristics superior to most other tool steels
after heat treatment, the hardness is higher than SKD11; tenacity is twice of SKD11; high hardness and toughness |
| Applications |
punches & dies, draw & forum dies, shear blades, shredder knives, thread & form rolls, cold heading dies, mill rolls & slitters |
Heat
Treatment |
Austenitize |
Double High Temperature Draw |
| 1030℃ |
520℃ |
HRC 62/64 |
| 540℃ |
HRC 60/62 |
| 550℃ |
HRC 58/60 |
 |
|
