Multi-specification O1 tool steel
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O1 tool steel is a popular oil-hardening tool steel known for its excellent wear resistance and good machinability.
It belongs to the group of cold work steels and is widely used in various industrial applications due to its versatility and ease of heat treatment.
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Description
Specifications for O1 Tool Steel
| O1 Tool Steel Specifications and Details | |
| Property | Specification |
| Grade | O1 |
| Carbon(C) | 0.85-1.00% |
| Manganese(Mn) | 1.00-1.40% |
| Silicon(Si) | ≤0.50% |
| Chromium(Cr) | 0.40-0.60% |
| Molybdenum(Mo) | 0.40-0.60% |
| Vanadium(V) | 0.30% |
| Phosphorus(P) | ≤0.03% |
| Sulfur(S) | ≤0.03% |
| Other Elements | — |
Key Properties
- Hardness: O1 tool steel can achieve a high hardness of up to 64 HRC when properly heat treated. This makes it suitable for applications requiring high wear resistance.
- Toughness: It offers a good balance between hardness and toughness, making it less prone to cracking or chipping under stress.
- Machinability: O1 steel is known for its good machinability, which allows for easy shaping and forming during manufacturing.
- Dimensional Stability: It maintains dimensional stability during heat treatment, ensuring minimal distortion and precise machining.
Heat Treatment Process
- Annealing: Heat the steel to 760-790°C (1400-1450°F), then slowly cool in the furnace to 480°C (900°F) and air cool to room temperature. This process softens the steel for easier machining.
- Hardening: Preheat to 400-650°C (750-1200°F) and then raise the temperature to 780-820°C (1440-1500°F). Quench in oil to achieve desired hardness.
- Tempering: Reheat to 150-350°C (300-660°F) depending on the desired hardness and toughness balance. Hold at temperature for 1 hour per inch of thickness, then air cool to room temperature.
Applications of Spring steel
- Cutting Tools: O1 steel is ideal for manufacturing various cutting tools, including knives, punches, and dies due to its high wear resistance and edge retention.
- Molds and Dies: Used in injection molds, extrusion dies, and other forming tools where precision and durability are critical.
- Industrial Blades: Commonly used for making industrial blades that require a sharp and long-lasting edge.
- Measuring Tools: Due to its dimensional stability, it is used in precision measuring tools like gauges and micrometers.
