Misumi SKS93 JIS Tool Steel Tube,Pipe

Misumi SKS93 JIS Tool Steel Tube Product Information -:- For detailed product information, please contact sales. -: Misumi SKS93 JIS Tool Steel Tube Synonyms -:- For detailed product information, please contact sales. -:

Misumi SKS93 JIS Tool Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: MISUMI SKS93 JIS Tool Steel** ## **1. Overview** **MISUMI SKS93** is a standard **carbon tool steel** conforming to the **Japanese Industrial Standards (JIS)** classification, designed for general-purpose tooling applications requiring good hardness and wear resistance at an economical cost. As a member of the **SKS (Special Use Carbon Steel for Tools)** series, SKS93 represents a versatile, water-hardening grade suitable for a wide range of low-to-medium duty cutting, punching, and forming tools. It is characterized by its **simplicity of heat treatment (water quenching), good machinability in the annealed state, and ease of sharpening**. While lacking the alloy content and performance of higher-grade tool steels, SKS93 offers a cost-effective solution for tool maintenance, prototype tooling, and production of tools where extreme wear resistance or toughness is not required. ## **2. International Standards & Specifications** This material is a standardized Japanese tool steel grade, with clear equivalents in other systems. * **Primary Standard:** * **JIS G4401:** Carbon tool steels. **SKS93** is the specific grade designation. * **Key International Equivalents:** * **AISI/SAE:** **W1-1.0C** (Water-hardening tool steel, ~1.0% C) is the closest American equivalent. * **DIN/EN:** **C100U / 1.1645** (German designation for 1.0% C tool steel). * **ISO:** **TC100** (ISO classification for similar composition). * **GB/T (China):** **T10** or **T10A** (High-quality carbon tool steel). * **Common Names:** Often referred to as **Water-Hardening Tool Steel, Carbon Tool Steel**, or simply by its JIS code **SKS93**. ## **3. Chemical Composition (Weight %, per JIS G4401)** The composition is simple, based primarily on iron and carbon with minimal alloying. | Element | Composition Range (%) | Role & Benefit | |---------|----------------------|----------------| | **Carbon (C)** | 0.90 – 1.05 | **Primary alloying element.** Provides hardness and wear resistance through martensite formation upon quenching. | | **Manganese (Mn)** | 0.15 – 0.40 | Aids slightly in hardenability and works as a deoxidizer. | | **Silicon (Si)** | 0.10 – 0.35 | Acts as a deoxidizer during steelmaking. | | **Phosphorus (P)** | ≤ 0.030 | Impurity, controlled for basic toughness. | | **Sulfur (S)** | ≤ 0.030 | Impurity, controlled for machinability. | | **Note:** Chromium, tungsten, vanadium, and molybdenum **are not intentional alloying additions** in standard SKS93. Its properties derive almost entirely from its carbon content and heat treatment. ## **4. Typical Physical & Mechanical Properties (Heat Treated)** * **Heat Treatment Characteristics:** * **Quenching Medium: Water.** This is its defining feature. Water quenching is severe and carries a **high risk of distortion and cracking**, especially for complex or uneven sections. * **Austenitizing Temperature:** ~760-800°C (1400-1470°F). * **Tempering:** Required immediately after quenching to relieve stress and adjust hardness/final properties. Typical range: 150-200°C (300-390°F) for high hardness. * **Mechanical Properties (Hardened & Tempered):** * **Achievable Hardness:** **60 – 64 HRC** (with proper heat treatment). * **Tensile Strength:** High, but material is brittle at full hardness. * **Impact Toughness:** **Low.** Very limited resistance to shock or impact loading at high hardness. * **Wear Resistance:** **Fair.** Adequate for low-stress applications against soft materials, but inferior to alloy tool steels (SKS, SKD) or high-speed steels due to lack of hard alloy carbides. * **Dimensional Stability:** **Poor.** High distortion and size change during water quenching. Not suitable for precision tools requiring tight tolerances post-heat treatment. * **Key Processing Features:** * **Machinability (Annealed):** **Excellent.** Very easy to machine, turn, and drill. * **Grindability:** **Excellent.** Easy to sharpen and regrind. * **Weldability:** **Poor.** High carbon content makes it prone to cracking. Not recommended for welding. ## **5. Product Application** SKS93 is suitable for **simple, low-stress tools** where low cost and ease of manufacture/maintenance are prioritized over performance and durability. * **Hand Tools & Maintenance Tools:** * **Screwdrivers, chisels, pry bars, and scrapers.** * **Punches, drifts, and alignment pins** for general workshop use. * **Simple Cutting & Forming Tools:** * **Knives and blades** for cutting paper, cardboard, leather, or soft plastics. * **Simple forming dies and bending tools** for soft metals (e.g., aluminum, copper). * **Woodworking Tools:** * **Chisels, plane blades, and carving tools** (traditional application). * **Gauges & Measuring Tools (Non-Precision):** * **Thread gauges, go/no-go gauges** for non-critical inspection. * **Prototype & Short-Run Tooling:** Where quick fabrication and low initial cost are key. ## **6. Key Features & Advantages** * **Low Cost:** The most significant advantage. One of the most economical tool steels available. * **Excellent Machinability & Grindability:** Easy to fabricate and sharpen with standard workshop equipment. * **Simple Heat Treatment:** Can be hardened with basic equipment (forge, oven, water tank), though skill is required to avoid cracks. * **High Surface Hardness Potential:** Can achieve very high surface hardness for its class. * **Good for Simple Shapes:** Works well for tools with uniform cross-sections and no sharp corners. ## **7. Processing Guidelines & Limitations** * **Heat Treatment Caution:** **Water quenching is risky.** Use a brine solution for more uniform quenching if possible. Preheating is recommended to reduce thermal shock. **Temper immediately** after quenching. * **Design for Quenching:** Avoid drastic changes in cross-section, sharp internal corners, and thin edges. These are stress concentrators and will likely crack. * **Not for Precision Work:** Due to high distortion, it is unsuitable for precision jigs, fixtures, or tooling requiring dimensional stability. * **Not for Impact or High Wear:** Avoid applications involving shock, heavy impact, or abrasive materials. * **Surface Hardening Only:** Has shallow hardenability; only thin sections will harden fully. Core of thick parts remains softer. **Summary:** MISUMI SKS93 JIS Tool Steel is a **basic, economical carbon tool steel** that serves as an entry-level material for toolmaking and general workshop use. Its value proposition is simplicity and low cost, not high performance. It is best suited for simple hand tools, low-stress applications, and situations where tools are frequently resharpened or replaced. For any application requiring dimensional precision, impact resistance, long wear life, or complex geometry, alloy tool steels (such as SKS3, SKS31) or oil/air-hardening grades (A2, D2) are vastly superior choices. SKS93 remains relevant as a accessible material for hobbyists, maintenance shops, and for manufacturing disposable or low-duty tools where its limitations are understood and accepted. -:- For detailed product information, please contact sales. -: Misumi SKS93 JIS Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7070 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. -: Misumi SKS93 JIS Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Misumi SKS93 JIS Tool Steel Tube -:- For detailed product information, please contact sales. -: Chemical Identifiers Misumi SKS93 JIS Tool Steel Tube -:- For detailed product information, please contact sales. -:

Packing of Misumi SKS93 JIS 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 3541 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