AISI Type A11 Tool Steel Rod/Bar (UNS T30111)

AISI Type A11 Tool Steel Rod (UNS T30111) Product Information -:- For detailed product information, please contact sales. -: AISI Type A11 Tool Steel Rod (UNS T30111) Synonyms -:- For detailed product information, please contact sales. -:

AISI Type A11 Tool Steel (UNS T30111) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI Type A11 Tool Steel (UNS T30111)** **Overview** AISI Type A11, also known under the UNS designation T30111, is a premium-grade, high-carbon, high-chromium **cold work tool steel**. It is classified as an air-hardening steel, renowned for its exceptional combination of **high wear resistance, good toughness, and minimal distortion during heat treatment**. Its key characteristic is the presence of a large volume of hard, wear-resistant carbides (primarily vanadium and chromium carbides) distributed throughout its microstructure. This makes A11 an excellent choice for applications requiring long service life under severe abrasive conditions. A common trade name for this steel type is **Crusher Steel**, reflecting its toughness and wear-resistant properties. --- ### **Chemical Composition (Typical Weight %)** The composition is balanced to achieve optimal carbide formation and hardenability. | Element | Content (%) | | :--- | :--- | | Carbon (C) | 2.25 - 2.50 | | Chromium (Cr) | 12.00 - 13.00 | | Molybdenum (Mo) | 0.70 - 1.00 | | Vanadium (V) | 2.75 - 3.25 | | Silicon (Si) | 0.40 - 0.60 | | Manganese (Mn) | 0.40 - 0.60 | | Sulfur (S) | ≤ 0.030 | | Phosphorus (P) | ≤ 0.030 | | **Iron (Fe)** | **Balance** | **Key Role of Elements:** * **High Carbon & Chromium:** Form hard chromium carbides for wear resistance and provide deep hardenability. * **High Vanadium:** Forms extremely hard vanadium carbides, which are the primary source of its superior abrasion resistance. It also refines grain size. * **Molybdenum:** Enhances hardenability, contributes to secondary hardening, and improves toughness. --- ### **Physical & Mechanical Properties** *Note: Properties are highly dependent on heat treatment condition (typically hardened and tempered).* | Property | Typical Value / Description | | :--- | :--- | | **Density** | 7.64 g/cm³ (0.276 lb/in³) | | **Hardness (Hardened & Tempered)** | 58 - 65 HRC (Rockwell C scale). Commonly used at 60-62 HRC for optimal wear/toughness balance. | | **Toughness** | Moderate to good for a high-carbide steel. Superior to many other high-wear steels like D2, but lower than shock-resistant steels. | | **Wear Resistance** | **Excellent**, among the best of all cold work tool steels due to the high volume of vanadium carbides. | | **Dimensional Stability** | Very good during heat treatment due to its air-hardening nature, resulting in minimal distortion and size change compared to oil-hardening steels. | | **Machinability** | Poor in the annealed condition due to high carbide content. Requires use of carbide tools and slower speeds. Grindability is also challenging. | | **Thermal Conductivity** | Relatively low. | | **Coefficient of Thermal Expansion** | ~ 10.4 x 10⁻⁶/°C (20-100°C) | --- ### **Heat Treatment** * **Annealing:** Heat to 870-900°C (1600-1650°F), slow furnace cool. Resulting hardness: 241-269 HB. * **Stress Relieving (after machining):** 650-675°C (1200-1250°F), then air cool. * **Hardening:** Preheat, then austenitize at 970-1010°C (1775-1850°F). **Quench in still air or forced air.** * **Tempering:** **Mandatory immediately after quenching.** Typically double or triple tempered at 480-540°C (900-1000°F) for 2+ hours per cycle to achieve desired hardness (e.g., 60-62 HRC) and transform retained austenite. --- ### **Product Applications** AISI A11 is specified for demanding applications where extreme wear resistance is the primary concern, and some toughness is still required. 1. **Forming & Blanking Dies:** For abrasive materials like fiberglass, composites, plastics with fillers, and sheet metals. 2. **Punching Tools:** Punches, perforators, and wear plates in severe service. 3. **Slitter Knives & Rotary Cutters:** For cutting abrasive papers, cardboard, and plastics. 4. **Powder Compaction Tools:** Dies and punches for pressing metal or ceramic powders. 5. **Industrial Knives & Blades:** For shredding, granulating, and size reduction of tough, abrasive materials (e.g., its "Crusher Steel" nickname). 6. **Rolls & Guides:** In wire drawing and other processes involving abrasive wear. 7. **Gauges & Precision Parts:** Where wear resistance and dimensional stability are critical. --- ### **International Standards & Cross-Reference** AISI Type A11 is recognized under various international standard designations. | Standard | Designation | Equivalent / Similar Grade | | :--- | :--- | :--- | | **AISI/SAE (USA)** | **Type A11** | - | | **UNS (USA)** | **T30111** | - | | **ASTM (USA)** | A681 (Covers tool steels) | Grade A11 | | **Europe (EN)** | **~1.2606** | X153CrMoV12 | | **Germany (DIN)** | **~1.2606** | X153CrMoV12 | | **Japan (JIS)** | **~SKD12** | - | | **Sweden (SS)** | **~2714** | - | **Note:** The European 1.2606 grade is the closest equivalent, though slight compositional variations may exist between manufacturers. Always consult the supplier's technical data sheet for exact specifications. --- ### **Key Advantages & Considerations** **Advantages:** * **Unmatched Wear Resistance:** Superior to D2 and most other high-chromium steels. * **Good Dimensional Stability:** Air hardening minimizes risks of cracking and distortion. * **Good Combination of Properties:** Offers better toughness than other steels with comparable wear resistance. **Considerations:** * **Poor Machinability & Grindability:** Requires appropriate tools and processes, increasing fabrication time and cost. * **Lower Toughness than Shock Steels:** Not suitable for heavy impact applications (choose S-type steels instead). * **Cost:** Higher alloy content typically makes it more expensive than standard grades like D2 or O1. **Conclusion** AISI Type A11 (UNS T30111) is a specialist, high-performance tool steel designed for the most demanding wear applications. Its outstanding abrasion resistance, derived from its high vanadium carbide content, makes it the material of choice when tool life in abrasive environments is the overriding factor, justifying its higher cost and more challenging machinability. -:- For detailed product information, please contact sales. -: AISI Type A11 Tool Steel (UNS T30111) Specification Dimensions Size： Diameter 20-1000 mm Length <6657 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. -: AISI Type A11 Tool Steel (UNS T30111) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type A11 Tool Steel Rod (UNS T30111) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type A11 Tool Steel Rod (UNS T30111) -:- For detailed product information, please contact sales. -:

Packing of AISI Type A11 Tool Steel Rod (UNS T30111) -:- 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 Rod 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 3128 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