| Equivalent grades |
GB |
DIN |
AISI |
JIS |
- |
| 3Cr2W8V |
1.2581 |
H21 |
SKD5 |
- |
| Chemical Composition |
C |
Si |
Mn |
Cr |
P |
S |
V |
W |
- |
- |
| 0.26-0.36 |
0.15-0.50 |
0.15-0.40 |
3.0-3.75 |
≤0.03 |
≤0.02 |
0.30-0.60 |
8.50-10.00 |
- |
- |
| 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 |
HB240MAX |
| Characteristics |
Dry hardening,have upper hot intensity and rigidity, under middle pemperature
Good tenacity, hot tirdness nature and definite wearable empty quench under lower
Ao shi ti temperature condition, small distortion after heat treatment |
| Applications |
High stessed hot work tools,such as mandrels,dies and containers for metal tube
and rod extrusion,hot extrusion tools,tools for manufacture of hollows,screws,
rivets,nuts and bolts.die casting tools,forming dies,die inserts,hot shear blades |
| Heat treatment |
Annealing hardness: ≤241 HB;
Heat treatment temperatu
Hardening: 1070÷1150°C
Tempering: 200°C
Tempering hardness: 53 HRC |
 |
|
