Tool Steel Rectangle 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.
Metal Type
Tool Steel
Shape
Bar-Rectangle
Yes
Eniteo Vendor ID
3145
Custom Cut Warehouse
0
Thickness
0.0625
Width
4
Max Length
36
Alloy
O1
Production Method
Precision Ground
Weight/Lineal Foot
0.85 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 rectangle bar is precision ground with a thickness of 0.0625 inches and a width of 4 inches. It is made from O1 tool steel, known for its excellent dimensional stability during heat treatment and general-purpose use.

The bar is available in standard lengths of 18 and 36 inches, with no custom cut warehouse availability, so custom cutting options are limited.

Yes, O1 tool steel experiences significantly less distortion during heat treating compared to other tool steels like A-2 or D-2, making it ideal for rolls, punches, shear knives, and gauges.

This O1 tool steel bar has a high machinability rating of 95 and an ultimate tensile strength of 105 ksi, with good elongation and shear strength, making it suitable for precision machining and tooling.

Yes, material test reports (MTR) are available for this product to ensure quality and compliance.

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