O1
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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:
- Good Wear Resistance: Offers excellent wear resistance, making it suitable for tools exposed to high friction and wear.
- High Hardenability: Can be hardened to high levels, providing excellent strength and hardness after heat treatment.
- Ease of Machining: O1 is easy to machine, which makes it a versatile tool steel for manufacturing and tool-making processes.
- Good Toughness: Although it is a high-carbon steel, it has a good balance of toughness, preventing brittleness in tools and parts.
- Dimensional Stability: Offers good dimensional stability after heat treatment, making it useful for applications requiring high precision.
- Oil Hardening: O1 is oil-hardening, which simplifies the heat treatment process, reducing the risk of cracking compared to water-hardening steels.
Specifications:
- ASTM A681: Standard Specification for Tool Steel, Oil-Hardening, which includes O1.
- SAE J437: Standard for oil-hardening tool steels, including O1.
- UNS T31501: Unified Numbering System designation for O1 tool steel.
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 |