Supreme Steels

O1

Product Description:

O1 is a high-carbon, oil-hardening tool steel that is widely used for general-purpose applications. It is known for its excellent balance of hardness, wear resistance, and toughness, making it ideal for a variety of cutting tools, dies, and other tooling applications. O1 tool steel is easy to heat treat and is commonly used in situations where precise and sharp edges are necessary. It is primarily hardened and tempered using oil, which gives it its characteristic properties. O1 offers good dimensional stability during heat treatment and is often selected for applications where ease of machining and high wear resistance are critical.

Features:

Specifications:

Composition of O1 Tool Steel:

Element Percentage
Carbon (C) 0.85 – 1.00
Chromium (Cr) 0.40 – 0.60
Molybdenum (Mo) 0.20 – 0.30
Vanadium (V) 0.10 – 0.20
Manganese (Mn) 0.60 – 0.90
Silicon (Si) 0.50 – 0.80
Phosphorus (P) 0.03% max
Sulfur (S) 0.03% max
Iron (Fe) Balance

Physical Properties:

Property Value
Density 7.85 g/cm³
Melting Point 1425°C (2597°F)
Hardness (Rockwell C) 58-64 HRC
Tensile Strength (Ultimate) 230,000 psi (1580 MPa)
Yield Strength 210,000 psi (1450 MPa)
Elongation 12-15%
Modulus of Elasticity 210 GPa