AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986)

AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986) Product Information -:- For detailed product information, please contact sales. -: AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986) Synonyms -:- For detailed product information, please contact sales. -:

AISI E 52100 Steel (100Cr6, SUJ2, UNS G52986) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI E 52100 High Carbon Chromium Bearing Steel** **Overview** AISI E 52100 (also known as 100Cr6, SUJ2, GCr15, and UNS G52986) is a premier high-carbon, high-chromium alloy steel specifically engineered for applications demanding exceptional wear resistance, high hardness, and good fatigue strength. Its primary and most iconic use is in the manufacture of precision rolling element bearings, where its performance under high stress and cyclic loading is unparalleled. The steel is typically supplied in the spheroidized annealed condition for optimal machinability and then hardened through quenching and tempering to achieve its renowned mechanical properties. --- ### **1. Chemical Composition (Typical % by Weight)** The outstanding properties of E 52100 stem from its carefully balanced chemistry, which promotes a high volume of hard, wear-resistant carbides within a strong martensitic matrix upon heat treatment. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Provides high hardness and wear resistance by forming hard chromium carbides and strengthening the martensite matrix. | | **Chromium (Cr)** | 1.30 - 1.60 | Enhances hardenability, promotes the formation of hard (Fe,Cr)₃C carbides for wear resistance, and improves corrosion resistance marginally. | | **Manganese (Mn)**| 0.25 - 0.45 | Increases hardenability and acts as a deoxidizer during steelmaking. | | **Silicon (Si)** | 0.15 - 0.35 | Acts as a deoxidizer and strengthens the ferrite matrix. | | **Phosphorus (P)**| ≤ 0.025 | Impurity; kept low to prevent embrittlement. | | **Sulfur (S)** | ≤ 0.015 (or higher for free-machining variants) | Impurity; typically kept very low for bearing applications to ensure cleanliness and fatigue life. May be increased in "free-machining" grades. | *Note: For ultra-high fatigue-critical applications (e.g., aerospace bearings), vacuum degassed or vacuum arc remelted (VAR) versions with extremely low levels of oxygen and non-metallic inclusions are used.* --- ### **2. Physical & Mechanical Properties** Properties are highly dependent on the heat treatment condition. Values below are typical for the hardened and tempered state. * **Density:** 7.81 g/cm³ (0.282 lb/in³) * **Elastic Modulus (Young's Modulus):** 210 GPa (30 x 10⁶ psi) * **Poisson's Ratio:** 0.30 * **Thermal Conductivity:** ~46 W/m·K at 20°C * **Coefficient of Thermal Expansion:** 11.0 x 10⁻⁶ /K (20-100°C) * **Hardness (Hardened & Tempered):** 60 - 67 HRC (Typical bearing operating hardness: 60-64 HRC) * **Ultimate Tensile Strength:** ~2,200 MPa (320 ksi) approx. at 62 HRC * **Yield Strength (0.2% Offset):** ~1,700 MPa (250 ksi) approx. at 62 HRC * **Fatigue Endurance Limit:** High, a key reason for its bearing application. Precise values depend on material cleanliness and surface finish. --- ### **3. Product Applications** E 52100's unique combination of hardness, wear resistance, and dimensional stability after heat treatment makes it ideal for: * **Bearings:** **The primary application.** * Ball bearings (deep groove, angular contact) * Roller bearings (cylindrical, tapered, spherical) * Bearing races, balls, and rollers * Precision aerospace and instrument bearings * **Tooling and Machine Components:** * Gages and measuring instruments * Mandrels, shafts, and spindles * Wear plates and slides * High-quality knife blades and pivots * **Automotive Components:** * Fuel injection system parts * High-wear pins and bushings (beyond standard bearings) * **Other Industrial Uses:** * Rolling mill rolls * Precision parts requiring high wear resistance and stability --- ### **4. International Standards & Designations** E 52100 is recognized globally under various national and international standards. Key equivalents include: | Standard System | Designation | Notes | | :--- | :--- | :--- | | **AISI / ASTM (USA)** | **AISI E 52100**, ASTM A295 (Grade 52100), UNS **G52986** | The most common American designation. | | **ISO (International)** | **ISO 683-17: 100Cr6** | The standardized international name. The "6" denotes ~1.5% Cr. | | **DIN / EN (Germany/EU)** | **1.3505, 100Cr6** (EN ISO 683-17) | Widely used in European industry. | | **JIS (Japan)** | **SUJ2** (SUJ1-SUJ5 series, with SUJ2 being the most common equivalent) | The Japanese bearing steel standard. | | **GB (China)** | **GCr15** | A nearly identical and very common Chinese grade. | | **SAE (USA)** | **SAE 52100** | Essentially identical to AISI E 52100. | **Relevant Material Specifications:** * **ASTM A295:** Standard Specification for High-Carbon Anti-Friction Bearing Steel. * **ASTM A485:** Standard Specification for High Hardenability Anti-Friction Bearing Steel. * **ASTM A534:** Standard Specification for Carburizing Steels for Anti-Friction Bearings. * **ISO 683-17:** Heat-treatable steels, alloy steels and free-cutting steels – Part 17: Ball and roller bearing steels. --- ### **Summary** AISI E 52100 / 100Cr6 / SUJ2 is the global benchmark material for high-performance bearing applications. Its high carbon and chromium content delivers an exceptional balance of deep hardenability, ultra-high wear resistance, and crucial fatigue strength. Available to strict international standards that govern its chemical and cleanliness levels, this versatile steel is also successfully employed in a wide range of other precision components where durability under extreme mechanical stress is paramount. For engineers and designers, specifying E 52100 signifies a commitment to reliability, longevity, and peak performance in demanding mechanical systems. -:- For detailed product information, please contact sales. -: AISI E 52100 Steel (100Cr6, SUJ2, UNS G52986) Specification Dimensions Size： Diameter 20-1000 mm Length <4133 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 E 52100 Steel (100Cr6, SUJ2, UNS G52986) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986) -:- For detailed product information, please contact sales. -:

Packing of AISI E 52100 Steel Capillary (100Cr6, SUJ2, UNS G52986) -:- 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 Capillary 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 604 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