Cold work tool steels include those steels which require high mechanical forces and sliding contact between the tool surface and the work material and where the surface temperature of the material is not elevated.
Cold work steel is exposed to high stresses and requires great resistance against wear, impact and bending. The development of new steel grades is mainly guided by analyzing damage suffered by tools in various processes.
In each area of use, properties are sought which will extend the working life of the tool. Different types of wear demand different types of steel. Product development is moving towards producing more robust steels with higher resistance to wear and greater durability.
EQUIVALENT GRADES |
|||||
American (AIAI) |
(W - Nr) |
German (DIN) |
Japanese (JIS) |
Bohler |
Assab |
D-2 |
1.2379 |
X155CrVMo12-1 |
SKD-11 |
K 110 |
SVERKER 21 (HCHCr) |
D-3 |
1.2080 |
X210Cr12 |
SKD - 1 |
K 100 |
- |
0-1 |
1.2510 |
100MnCrW4 |
SKS-3 |
K 460 |
DF -2 |
0-7 |
- |
- |
- |
- |
- |
S-1 |
1.2550 |
45WCrV7 |
SKS 41 |
K 455 |
M-4 |
- |
- |
- |
- |
K 340 |
- |
A-8 (MOD) |
1.2631 |
X50CrMow9-1-1 |
- |
K 329 |
- |
D2 KNL |
1.2601 |
X165CrMoV12 |
- |
K 105 |
- |
CHEMICAL COMPOSITION |
||||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Ni |
D-2 |
1.50-1.60 |
0.10-0.40 |
0.15-0.45 |
0.030 max |
0.030 max |
11.00-12.00 |
0.60-1.20 |
0.90-1.10 |
- |
- |
D-3 |
1.90-2.20 |
0.10-0.40 |
0.15-0.45 |
0.030 max |
0.030 max |
11.00-12.00 |
- |
- |
- |
- |
0-1 |
0.85-0.95 |
0.20-0.40 |
1.00-1.30 |
- |
- |
0.40-0.60 |
- |
0.00-0.20 |
0.40-0.60 |
- |
0-7 |
1.10-1.30 |
0.50-0.70 |
0.90-1.10 |
- |
- |
0.35-0.85 |
0.20-0.40 |
0.30-0.50 |
1.00-2.00 |
- |
S-1 |
0.45-0.55 |
0.70-1.00 |
0.30-0.70 |
- |
- |
1.20-1.70 |
- |
0.10-0.30 |
2.00-2.50 |
0.40M |
K 340 |
1.00-1.20 |
0.80-1.00 |
0.30-0.50 |
- |
- |
8.00-8.50 |
2.00-2.20 |
0.40-0.60 |
- |
- |
-8 (MOD) |
0.50-0.60 |
0.80-1.00 |
0.40-0.60 |
0.035 max |
0.030 max |
7.50-8.50 |
1.25-1.50 |
0.40-0.60 |
- |
- |
D2 KNL |
1.55-1.75 |
0.25-0.40 |
0.20-0.40 |
0.030 max |
0.030 max |
11.0-12.0 |
0.50-0.70 |
0.10-0.50 |
0.40-0.60 |
- |