AISI 0-1 Multipurpose Oil - Hardened Tool Steel

The cold work tool steels listed under the letter symbol "O" are all low alloy types that must be oil quenched in heat treatment. Sizes over approximately 2 to 2 inch (50.8 to 63.5) may exhibit lower hardness in the interior. 0-1 is one of the first of the tool steels grades. It is a multipurpose tool steel which maintains excellent abrasion and wears resistance, toughness and machinability characteristics. It is used extensively in dies and punches for blanking, forming and trimming, as well as in cams, bushings, guides and gauges.


Typical applications include:
-  Blanking dies
-  Drawing dies
-  Machine ways
-  Cams   
-  Forming dies  
-  Plastic mold dies
-  Coining dies  
-  Gages   
-  Shear Blades
-  Trim dies


The chemical composition of the D. B. & S Steel grade 0-1 ground flat stock falls within ranges that are rigidly monitored. These chemical ranges are shown below *



Hardening

Rate of Heating:

Slowly 

Preheat Temperature:

1, 200 F (649) C

Hardening Temperature:

1,450 1,500 F (788 816) C

Time at Temperature

Minutes 10 30

Quenching Medium: 

Oil

Tempering

Tempering Temperature:

350 500 F      (177 260) C

Approximate Tempered Hardness:

HRC     57 - 62

Attributes

WEAR RESISTANCE

MEDIUM

TOUGHNESS 

MEDIUM

RESISTANCE TO SOFTENING

LOW

DEPTH OF HARDENING

MEDIUM

MACHINABILITY

HIGH

GRINDABILITY

HIGH

DISTORTION IN HEAT-TREATING

LOW

RESISTANCE TO CRACKING

MEDIUM TO HIGH

RESISTANCE TO DECARBURIZATION

HIGH



*Source: Steel Products Manual "TOOL STEELS" a publication of the Iron and Steel Society  - June 2000