O1
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Product Description:
O1 tool steel is a high-carbon, cold-work tool steel that is commonly used in applications requiring good wear resistance, hardness, and dimensional stability. It is an oil-hardening steel, meaning it can be heat-treated by quenching in oil, which offers convenience and cost-effectiveness for heat treatment processes. O1 steel is used in the manufacturing of cutting tools, dies, and other tools that experience moderate to high stresses and wear. It is widely used in industries such as tool-making, automotive, and machining..
Features:
- Good Hardness: O1 tool steel can be heat-treated to a hardness range of 58-65 HRC (Rockwell Hardness), making it ideal for cutting tools and dies.
- Wear Resistance: It has good wear resistance, making it suitable for applications where abrasion resistance is essential.
- Excellent Machinability: O1 is relatively easy to machine compared to other high-carbon steels, allowing for the creation of precise parts and tools.
- Edge Retention: It maintains a sharp cutting edge for extended periods, which is crucial in applications involving cutting and shaping materials.
- Toughness: While it has high hardness, O1 also offers a reasonable level of toughness, preventing brittle failure under impact.
- Easy Heat Treatment: The steel can be easily heat-treated by oil quenching, which is a convenient and cost-effective method of hardening.
Specifications:
- ASTM A681: Standard specification for tool steels (includes O1 steel) that outlines the composition, mechanical properties, and applications of tool steels.
- SAE J437: Specifies the general requirements for tool steels, including O1, to ensure quality and uniformity.
- UNS T31501: The Unified Numbering System (UNS) designation for O1 tool steel.
- DIN 1.2510 (Germany): A European specification for O1 tool steel, confirming its suitability for cold-work applications.
Composition of O1 Tool Steel:
Element | Percentage |
---|---|
Carbon (C) | 0.90 – 1.05% |
Manganese (Mn) | 0.60 – 0.90% |
Chromium (Cr) | 0.50 – 0.80% |
Vanadium (V) | 0.10 – 0.25% |
Silicon (Si) | 0.50 – 0.80% |
Iron (Fe) | Balance |
Phosphorus (P) | 0.03% Max |
Sulfur (S) | 0.03% Max |
Physical Properties:
Property | Value |
---|---|
Density | 7.85 g/cm³ |
Melting Point | 1410°C (2570°F) |
Hardness (Brinell) | 200-250 HB |
Tensile Strength | 850-1100 MPa (123,000-160,000 psi) |
Yield Strength | 700-1000 MPa (101,500-145,000 psi) |
Elongation | 10-15% |
Modulus of Elasticity | 210 GPa |
Thermal Conductivity | 46 W/m·K |
Coefficient of Thermal Expansion | 11.5 × 10⁻⁶ /°C |