Latrobe Whitebear® Cold Work Tool Steel (ASTM A18)

Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) Product Information -:- For detailed product information, please contact sales. -: Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: Latrobe Whitebear® Cold Work Tool Steel (AISI O1 / ASTM A681)** **Latrobe Whitebear®** is a premium-grade, oil-hardening cold work tool steel renowned for its exceptional combination of toughness, dimensional stability during heat treatment, and good wear resistance. It is classified under the AISI O1 grade and conforms to the ASTM A681 specification. As a versatile, non-deforming steel, Whitebear® is a trusted choice for a wide range of tooling applications requiring reliable performance and predictable behavior in manufacturing. Its key advantage lies in its excellent machinability in the annealed condition and its relatively low hardening temperature, which minimizes the risk of distortion and cracking. This makes it an ideal material for complex tools and dies where maintaining precise dimensions is critical. --- ### **1. Chemical Composition** The balanced composition of Latrobe Whitebear® provides its characteristic properties of hardenability, wear resistance, and stability. | Element | Content (%) | | :--- | :--- | | Carbon (C) | 0.90 | | Manganese (Mn) | 1.20 | | Chromium (Cr) | 0.50 | | Tungsten (W) | 0.50 | | Vanadium (V) | 0.20 | | **Balance** | Iron (Fe) | *(Note: Composition may vary slightly within standard AISI O1 / ASTM A681 ranges.)* --- ### **2. Physical & Mechanical Properties** **Typical Properties in the Annealed Condition:** * **Hardness:** ~ 192 HB (Brinell) * **Machinability:** Excellent (rated at approximately 65% of a 1% carbon steel standard). **Typical Properties in the Hardened & Tempered Condition:** * **Hardening Method:** Oil quenching. * **Typical Hardening Temperature:** 790°C - 815°C (1450°F - 1500°F). * **Tempering Range:** 150°C - 260°C (300°F - 500°F) for optimal combination of hardness and toughness. * **Achievable Hardness:** **58 - 62 HRC** (Rockwell C) (depending on section size and tempering temperature). * **Key Characteristics:** * **Minimal Dimensional Change:** Exhibits very low distortion during quenching due to its oil-hardening nature. * **Good Toughness:** Resists chipping and breakage under impact. * **Fair Wear Resistance:** Suitable for many wear applications; for severe abrasive wear, higher alloy steels like A2 or D2 are recommended. --- ### **3. International Standards & Cross-Reference** Latrobe Whitebear® (O1) is recognized globally under several standard designations: * **USA:** AISI O1, ASTM A681 (Grade O1), UNS T31501 * **Germany:** DIN 1.2510 * **Sweden:** SS 2140 * **Japan:** JIS SKS 3 * **United Kingdom:** BS BO1 --- ### **4. Product Applications** Due to its well-rounded properties, Latrobe Whitebear® is extensively used in the manufacture of durable, precision tools for cold-working operations, including: * **Blanking and Forming Dies:** For low to medium production runs on materials like sheet metal, foil, and plastics. * **Shear Blades:** For cutting non-ferrous metals and softer materials. * **Gages, Templates, and Master Tools:** Where dimensional stability is paramount. * **Machine Tools:** Arbors, cams, chuck jaws, and guides. * **Knives and Cutting Tools:** Woodworking knives, slitting knives, and industrial blades. * **Thread Rolling Dies:** For certain applications. * **Miscellaneous Tooling:** Punches, taps, reamers, and intricate tools where machinability before hardening is a key advantage. --- ### **5. Availability and Processing** Latrobe Whitebear® is typically available from steel service centers and distributors in a variety of forms: * **Black Bar / Rough Turned** * **Precision Ground Flat Stock** * **Forged Blocks** * It is supplied in the **annealed condition**, ready for machining, followed by final heat treatment (hardening and tempering) by the toolmaker. **In summary, Latrobe Whitebear® (AISI O1) is a classic, high-performance cold work tool steel that offers an outstanding balance of machinability, hardenability, and dimensional stability. It remains a fundamental and cost-effective choice for a vast array of industrial tooling applications where predictable performance and ease of fabrication are essential.** -:- For detailed product information, please contact sales. -: Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) Specification Dimensions Size： Diameter 20-1000 mm Length <7191 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) -:- For detailed product information, please contact sales. -:

Packing of Latrobe Whitebear® Cold Work Tool Steel (ASTM A18) -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3662 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition