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HOME --> MATRIX HIGH-SPEED STEELS --> DRM1

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. 

  1. Applicable with the maximum hardness of 58HRC
  2. High hardness and tough grade with excellent heat checking resistance
  3. Fine microstructure as that of hot work die steels resulting in higher toughness than conventional high speed tool steels 
  4. High softening resistance and hot hardness
  5. 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 (C) 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

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  International Mold Steel, Inc. 
6796 Powerline Drive 
Florence, KY 41042 USA 
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