Daido's Dream Series
DRM1
Hot and Warm Forging Die Steel
High tough matrix type high speed tool steel
Features
High hardness and high tough
Matrix type high speed tool steel vastly surpassing hot work
die steels. DRM1 improves hot and warm die life by its
higher toughness than conventional grade.
- Applicable with the
maximum hardness of 58HRC
- High hardness and tough
grade with excellent heat checking resistance
- Fine microstructure as
that of hot work die steels resulting in higher
toughness than conventional high speed tool steels
- High softening resistance
and hot hardness
- Double melting realizes
clean and homogeneous steel with less non-metallic
inclusions
Applications
- Hot forging dies and
punches
- Warm forging dies and
punches
Heat
Treatments
| DRM1 |
Harden
1120C (2048F) |
Draws
(minimum of 2) |
Maximum
toughness |
600C
(1112F) HRC56 |
| Recommend
a minimum 6 barr quench |
Good
toughness & wear |
580C
(1076F) HRC57 |
|
|
|
Maximum
wear |
550C
(1022F) HRC58 |
Re-forging
Temperature |
Heat
treatment conditions (ºC) |
Hardness |
| Annealing |
Quenching |
Tempering |
Annealed |
Hardening/Tempering |
| Requested
to inquire |
800~880
Slow cooling |
1100~1140
OQ, GC, Salt bath |
550~620
AC, ≥ twice |
≤235HB |
56~58HRC |
| OQ: Oil
quenching, GC: Gas quenching in vacuum furnace,
AC: Air cooling |
Microstructure
(As annealed)
Fine and uniform
microstructure with less coarse carbides.
Tempering
hardness
 |
Toughness:
charpy impact property
 |
Temper
softening resistance
 |
Hot
hardness
 |
Heat
checking resistance
 |
Fatigue
strength
 |
Hardenability
 |
Dimensional
changes in heat treatment
 |
Drilling
machinability
 |
Nitriding
 |
Physical
properties
|
|
|
