|
Cold Work Tool Steels
|
|
Chemical Composition and Heat Treatment
|
| |
DAIDO
BRAND |
Equivalent
to |
Chemical
Composition (%) |
| JIS |
AISI
|
VDEh |
C |
Si |
Mn |
Ni |
Cr |
Mo |
W |
V |
| Carbon
Tool Steels |
| Oil
Hard |
YK30 |
SKS93 |
O2
|
- |
1.05 |
0.4 |
1.0 |
0.25
max. |
0.5 |
- |
- |
- |
Water
Hard |
YK4 |
SK4 |
W1
|
- |
0.90-1.00 |
0.35
max. |
0.50
max. |
0.25
max. |
- |
- |
- |
- |
| Low
Alloy Tool Steels |
General
Uses |
GOA |
SKS/MOD |
-
|
- |
0.86 |
0.3 |
1.2 |
0.25
max. |
0.5 |
0.13 |
0.5 |
(*1) |
| GO4 |
- |
A4
|
- |
0.85 |
0.3 |
2.0 |
0.25
max. |
1.0 |
1.4 |
- |
- |
| GO5 |
- |
-
|
- |
(Patent
Pending) |
| GO40F |
- |
-
|
- |
Cr-Mo-V
Type |
Cutting
Uses |
GM2 |
SKS2 |
-
|
- |
1.00-1.10 |
0.35
max. |
0.80
max. |
0.25
max. |
0.50-1.00 |
- |
1.00-1.50 |
(0.25
max.) |
| High
Alloy Tool Steels |
General
Uses |
DC53 |
- |
-
|
- |
(Patent
Pending) |
| DC11 |
SKD11 |
-
|
- |
1.40-1.60 |
0.40
max. |
0.60
max. |
0.50
max. |
11.00-13.00 |
0.80-1.20 |
- |
0.20-0.50 |
|
|
| |
DAIDO
BRAND |
Forging
Temperature
(℃) |
Heat Treatment(℃) |
Annealing
Temperature |
Hardening
Temperature |
Quenching
Medium |
Tempering
Temperature |
| Carbon
Tool Steels |
| Oil
Hard |
YK30 |
1050-850 |
750-780 |
790-850 |
Oil |
150-200 |
Water
Hard |
YK4 |
1100-850 |
740-760 |
760-820 |
Water |
150-200 |
| Low
Alloy Tool Steels |
General
Uses |
GOA |
1100-850 |
750-800 |
800-850 |
Oil |
150-200 |
| GO4 |
1100-850 |
770-810 |
830-870 |
Air |
|
| GO5 |
(Flame
Hard) |
| GO40F |
Prehardened
Steel(36-40 HRC) |
Cutting
Uses |
GM2 |
1100-850 |
750-800 |
830-880 |
Oil |
150-200 |
| High
Alloy Tool Steels |
General
Uses |
DC53 |
1100-900 |
830-880 |
1000-1040 |
Air |
520-530 |
| DC11 |
1100-900 |
830-880 |
1000-1050 |
Air |
150-200 |
|
|
| |
DAIDO
BRAND |
Hardness |
|
Annealed HB |
Tempered HRC |
| Carbon
Tool Steels |
| Oil
Hard |
YK30 |
217
max. |
63
min. |
Water
Hard |
YK4 |
207
max. |
61
min. |
| Low
Alloy Tool Steels |
General
Uses |
GOA |
217
max. |
61
min. |
| GO4 |
|
61
min. |
| GO5 |
(Flame
Hard) |
| GO40F |
Prehardened
Steel
(36-40 HRC) |
40 |
Cutting
Uses |
GM2 |
217
max. |
61
min. |
| High
Alloy Tool Steels |
General
Uses |
DC53 |
255
max. |
62
min. |
| DC11 |
255
max. |
61
min. |
|
|
|
|
