JIS SKS95M Oil-hardening Cold Work Tool Steel Tube,Pipe

JIS SKS95M Oil-hardening Cold Work Tool Steel Tube Product Information -:- For detailed product information, please contact sales. -: JIS SKS95M Oil-hardening Cold Work Tool Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

JIS SKS95M Oil-hardening Cold Work Tool Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: JIS SKS95M Oil-hardening Cold Work Tool Steel** **Overview** JIS SKS95M is a high-carbon, high-chromium, oil-hardening cold work tool steel classified under the Japanese Industrial Standards (JIS). As a member of the **SKS series (tool steels for special purposes)**, SKS95M is specifically formulated for **excellent wear resistance and good dimensional stability** during heat treatment. The “M” suffix indicates its optimized composition for reliable oil quenching, which minimizes the risks of distortion and cracking compared to water-hardening steels. It is a versatile and cost-effective steel for a wide range of cold working applications requiring high surface hardness. **Key Advantages** * **Superior Wear Resistance:** High carbon and chromium content form abundant hard carbides, providing excellent resistance to abrasive wear. * **Good Dimensional Stability:** Oil quenching results in less distortion and lower risk of cracking, making it suitable for complex shapes and precision tools. * **Deep Hardening Penetration:** Good hardenability allows it to achieve uniform hardness through thicker cross-sections. * **Good Machinability (in annealed state):** Can be readily machined, shaped, and engraved prior to final hardening. * **Cost-Effective:** Offers a balanced performance profile at a competitive price point for many cold work applications. **International Designations & Standards** * **JIS (Japan):** SKS95M * **ISO (International):** **~105WCr6** (This is the closest common ISO equivalent, with some compositional variance. Always verify with technical datasheets). * **ASTM (USA):** **~O2** (AISI/SAE O2 is a very similar manganese-chromium oil-hardening steel and is considered the **functional equivalent** in most applications). * **DIN (Germany):** **1.2510** (Equivalent to ~105WCr6 / O2). * **GB (China):** **~CrWMn** (A similar oil-hardening steel, though composition ranges may differ). *(Note: SKS95M, ISO 105WCr6, AISI O2, and DIN 1.2510 are largely interchangeable in terms of application and heat treatment. Minor differences exist in composition, primarily in vanadium and tungsten content.)* --- #### **1. Chemical Composition (Typical, Weight %)** The balanced alloying of carbon, chromium, and tungsten provides the core properties of wear resistance and hardenability. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.90 - 1.00 | Primary element for high hardness and wear resistance through carbide formation. | | **Silicon (Si)** | 0.10 - 0.30 | Deoxidizer, improves strength and tempering resistance. | | **Manganese (Mn)** | 0.90 - 1.20 | Increases hardenability, allowing for oil quenching, and stabilizes austenite. | | **Chromium (Cr)** | 0.50 - 1.00 | Enhances hardenability, wear resistance, and provides mild corrosion resistance. | | **Tungsten (W)** | 0.50 - 1.00 | Forms hard, stable carbides that improve wear resistance and help refine grain size. | | **Vanadium (V)** | ≤ 0.20 (Optional/Trace) | If present, refines grain and improves toughness and wear resistance. | | **Phosphorus (P)** | ≤ 0.030 | Residual impurity (kept low for better toughness). | | **Sulfur (S)** | ≤ 0.030 | Residual impurity. Sometimes controlled for improved machinability. | | **Iron (Fe)** | Balance | Base metal. | --- #### **2. Physical & Mechanical Properties** *Note: Properties are highly dependent on heat treatment condition.* | Property | Value / Description | Condition / Note | | :--- | :--- | :--- | | **Density** | ~7.83 g/cm³ (0.283 lb/in³) | Annealed | | **Melting Point** | ~1420°C (2588°F) | Approximate | | **Thermal Conductivity** | ~45 W/m·K | At 20°C | | **Coefficient of Thermal Expansion** | ~12.5 x 10⁻⁶/K | 20-100°C | | **Hardness (Annealed)** | ~192-228 HB | Brinell, typical annealed/spheroidized condition for machining. | | **Hardness (Hardened & Tempered)** | **58 - 62 HRC** | Typical working hardness range. | | **Tempering Temperature Range** | **150°C - 250°C (300°F - 480°F)** | For maximum hardness. Can be tempered up to ~400°C (750°F) for increased toughness at lower hardness. | | **Machinability** | ~70-75% (of 1% carbon steel) | Good machinability in the annealed state. | --- #### **3. Product Applications** SKS95M/O2 steel is widely used for various cold work tooling that requires a combination of good wear resistance and stability. * **Blanking & Piercing Tools:** Medium-duty punches, dies, and stripper plates for sheet metal. * **Forming Tools:** Bending, forming, and drawing dies for metals. * **Cutting & Slitting Tools:** Knives, blades, and shear blades for non-ferrous metals, paper, plastic, and wood. * **Gauges & Precision Parts:** Master gauges, jigs, fixtures, and other wear-resistant mechanical components requiring dimensional stability. * **Thread Rolling & Knurling Tools:** Dies for cold forming of threads and patterns. * **Molds:** Plastic injection molds for non-abrasive resins, and zinc die-casting molds (prototype or low-volume). --- #### **4. Heat Treatment Guidelines (Typical)** * **Preheating:** Recommended at 650°C (1200°F) to minimize thermal shock and distortion. * **Austenitizing (Hardening):** **790°C - 820°C (1450°F - 1510°F)**, soak thoroughly, then quench in **warm oil (40-80°C)**. * **Tempering:** **Immediately after quenching.** Temper at **150°C - 250°C (300°F - 480°F)** for 1-2 hours per inch of thickness to achieve maximum hardness (58-62 HRC). **Note:** A slight secondary hardness peak may occur around 200°C-250°C. * **Stress Relieving:** For complex tools, a stress relief cycle at 600-650°C after rough machining (before final hardening) is highly recommended. * **Annealing:** Heat to 750-780°C, slow furnace cool to ~500°C, then air cool to achieve a spheroidized structure (~200 HB) for optimal machinability. **Disclaimer:** This information is for reference purposes. The exact heat treatment parameters (temperature, time, quenching medium) depend on the specific tool geometry, desired properties, and steelmaker’s recommendations. Always consult the material data sheet from your steel supplier and a professional heat treater for critical applications. -:- For detailed product information, please contact sales. -: JIS SKS95M Oil-hardening Cold Work Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6704 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 SKS95M Oil-hardening Cold Work Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of JIS SKS95M Oil-hardening Cold Work Tool Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers JIS SKS95M Oil-hardening Cold Work Tool Steel Tube -:- For detailed product information, please contact sales. -:

Packing of JIS SKS95M Oil-hardening Cold Work 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 3175 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