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 ½ 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 our grade 0-1 ground flat stock falls within ranges that are rigidly monitored. These chemical ranges are shown below *
Precision Ground Tolerances
Thickness:
+/-.001"
Width - Up to 8":
-.000/+.005"
Width - 9" and Over:
-.000/+.015"
Square:
+/-.001"
Length - 18":
Length - 24":
Length - 36":
Squareness (All Edges):
+1/4"
+1/2"
+5/8"
.003" per Inch
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:
HRC57 - 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
