JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube,Pipe

JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube Product Information -:- For detailed product information, please contact sales. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Product Information -:- For detailed product information, please contact sales. -: **Product Name:** JIS SKH2 Tungsten-Alloy High-Speed Tool Steel **International Standard:** JIS G4403 (Japan Industrial Standard) - High-Speed Tool Steels --- ### **1. Overview** JIS SKH2 is a **tungsten-alloyed high-speed tool steel** representing the fundamental class of T-series (tungsten-based) high-speed steels. It is characterized by its **good red hardness, moderate wear resistance, and cost-effectiveness**. As one of the earliest high-speed steel compositions, SKH2 provides a balanced performance for general-purpose cutting applications where extreme heat or abrasion resistance is not the primary requirement. It maintains cutting efficiency at higher speeds than traditional carbon tool steels, making it suitable for a wide range of machining operations. --- ### **2. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | C | 0.70–0.85 | | Si | 0.20–0.40 | | Mn | 0.20–0.40 | | Cr | 3.50–4.50 | | W | 13.00–15.00 | | V | 0.80–1.20 | | Mo | ≤ 0.60 | | Co | ≤ 1.00 | | P (max) | 0.030 | | S (max) | 0.030 | *Balance: Iron (Fe).* --- ### **3. Physical & Mechanical Properties** - **Density:** ~8.10 g/cm³ - **Thermal Conductivity:** ~25 W/m·K (at 20°C) - **Coefficient of Thermal Expansion:** ~11.8 ×10⁻⁶ /K (20–500°C) - **Hardness (Annealed):** ≤ 269 HB - **Hardness (Hardened & Tempered):** 62–65 HRC (typical) - **Tempering Temperature Range:** 540–580°C (Double tempering recommended) - **Maximum Service Temperature:** ~550°C - **Key Features:** Balanced combination of hardness, toughness, and hot hardness for general high-speed steel applications. --- ### **4. Heat Treatment** - **Annealing:** Heat to 800–880°C, slow cool (10–20°C/h) to 600°C, then air cool. Annealed hardness should be ≤269 HB. - **Hardening (Quenching):** - **Preheat:** 800–850°C - **Austenitizing:** **1260–1290°C** (Precise temperature control needed) - **Quenching:** Oil, air, or salt bath quench - **Tempering:** **Double temper at 540–580°C** for 1–2 hours each, cooling to room temperature between tempers. Maximum hardness typically achieved at 560–570°C. --- ### **5. Key Features & Advantages** - **Good Red Hardness:** Maintains cutting edge at moderate elevated temperatures - **Balanced Performance:** Offers reasonable wear resistance with better toughness than higher-alloyed grades - **Cost-Effective:** More economical than cobalt-containing or higher vanadium grades - **Established Technology:** Well-understood heat treatment and manufacturing characteristics - **Good Grindability:** Better grindability compared to high-vanadium steels --- ### **6. Typical Applications** SKH2 is suitable for a variety of general-purpose cutting and forming tools: - **Cutting Tools:** Drills, taps, reamers, milling cutters, and broaches for machining **carbon steels, alloy steels, and cast irons** - **Turning Tools:** Single-point lathe tools for general turning operations - **Saw Blades:** Metal cutting band saw and hacksaw blades - **Woodworking Tools:** High-quality planer blades and cutter heads - **Forming Tools:** Gear cutters and shaping tools - **Punches and Dies:** For light to medium cold work applications - **Hand Tools:** High-quality files and chisels requiring good edge retention --- ### **7. Equivalent Steel Grades (International Standards)** - **ISO:** HS12-0-1-5 - **DIN (Germany):** 1.3354 / S12-0-1-5 - **AISI/SAE (USA):** T6 (similar in concept, though composition differs) - **GB (China):** W14Cr4VMn (similar composition) - **UNS:** T12006 --- ### **8. Machining & Fabrication Notes** - **Machining:** Best machined in annealed condition. Requires appropriate cutting parameters due to work-hardening tendency - **Grinding:** Standard aluminum oxide wheels can be used with adequate cooling to prevent overheating - **Welding:** Not recommended for fabrication due to cracking sensitivity. Specialized procedures with preheating required if necessary - **Surface Treatment:** Can be nitrided or coated (TiN, TiCN) to enhance surface properties for specific applications - **Forging:** Forge at 1050–900°C with careful temperature control; slow cooling after forging is essential --- ### **9. Summary** JIS SKH2 represents a **classical tungsten-based high-speed steel** that provides reliable performance for general-purpose cutting applications. While not offering the extreme hot hardness or wear resistance of more highly alloyed grades, it delivers a **well-balanced combination of properties** at a competitive cost. SKH2 continues to be relevant for tools requiring good all-around performance where the highest levels of abrasion resistance or red hardness are not critical. Its established processing characteristics and consistent performance make it a practical choice for many conventional high-speed steel tool applications. Conformity to JIS G4403 ensures material reliability for manufacturers and end-users. -:- For detailed product information, please contact sales. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6808 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. -: JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube -:- For detailed product information, please contact sales. -:

Packing of JIS SKH2 Tungsten-Alloy High-Speed-Tool Steel Tube -:- 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 Tube 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 3279 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