Tool Steel Square Bar O1 offers excellent dimensional stability during heat treatment, and otherwise decent attributes. O1 is an oil-hardening, general purpose tool steel. While not as strong or wear resistant as A-2 or D-2, it experiences significantly less distortion during the heat treating process. It is typically used in rolls, punches, shear knives, food processing knives, and gauges.

MTR MTR Available
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Product Information

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Please note:

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Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Height
0.3125
Max Length
36
Metal Type
Tool Steel
Shape
Bar-Square
Yes
Eniteo Vendor ID
3145
Custom Cut Warehouse
0
Alloy
O1
Production Method
Ground Oversize
Weight/Lineal Foot
0.35 pounds
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Mechanical Properties

Density g/cm^3
8
Ultimate Tensile Strength KSI
105
Elongation % in 2 in.
20
Melting Point °F
2580 - 2660
Yield Tensile Strength KSI
58
Brinell Hardness 3000 kg load
177 - 212
Rockwell Hardness B Scale
88 - 95
Shear Strength KSI
58
Machinability %
95
Electrical Conductivity % IACS
7
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Chemistry Information : O1 Tool Steel

Element
Percentage
Element
Percentage
Element
Percentage
C
0.94
Fe
96.56
Cr
0.5
Mn
1.2
Si
0.3
W
0.5

This product is a square bar with a height of 0.3125 inches and is available in lengths of 18 and 36 inches. It is ground oversize for precise dimensional stability.

Yes, O1 tool steel offers excellent dimensional stability during heat treatment and has a high machinability rating of 95, making it suitable for various machining applications.

It is typically used for rolls, punches, shear knives, food processing knives, and gauges due to its general-purpose tool steel properties and good wear resistance.

Yes, MTR reports are available for this O1 tool steel square bar to verify its material properties and compliance.

The 18-inch length weighs approximately 0.51 lb and the 36-inch length weighs about 1.02 lb. Both sizes are in stock and ready to ship from Online Metals.

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