100Cr6 803A Steel Rod/Bar

Ovako 100Cr6 803A Steel Rod, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803A Steel Rod, Spheroidize annealing Synonyms -:- For detailed product information, please contact sales. -:

Ovako 100Cr6 803A Steel, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100Cr6 803A Steel – Spheroidize Annealed Condition** ## **Product Overview** Ovako 100Cr6 803A is a **standard, high-quality bearing steel** supplied in the **spheroidize annealed condition**, serving as the **foundational grade** within Ovako's 800-series product range. Based on the classic 100Cr6 (AISI 52100) alloy, the "803A" designation represents a steel manufactured with **consistent, well-controlled processes** to deliver reliable performance for general to demanding bearing and mechanical component applications. Its spheroidize annealed microstructure provides the optimal balance of machinability, dimensional stability, and predictable response to subsequent heat treatment, making it a versatile and widely trusted material for a broad spectrum of industrial uses. ## **Key Features & Benefits** * **Reliable & Consistent Quality:** As the baseline "A" grade within the 803-series, 100Cr6 803A offers guaranteed consistency in chemical composition, microstructure, and hardness. It provides a **dependable foundation** for manufacturers requiring predictable material behavior without the need for the specialized properties (e.g., ultra-cleanliness, enhanced machinability) of higher-tier "Q", "Z", "D", or "P" grades. * **Excellent Machinability:** The spheroidize annealed condition produces a uniform hardness of **190-220 HB** and a microstructure of fine, globular carbides in a soft ferrite matrix. This ensures **good chip formation, extended tool life, and efficient machining** for the production of component blanks. * **Predictable Heat Treatment Response:** The steel exhibits **good and consistent hardenability**, allowing for uniform through-hardening in appropriately sized sections. The spheroidized carbide structure minimizes the risk of overheating during austenitizing and promotes uniform transformation, leading to reliable final properties. * **Cost-Effective Performance:** For the majority of applications that do not require extreme fatigue life, impact toughness, or minimal distortion, 803A delivers the **optimal balance of performance and cost**, offering the full benefits of a quality 100Cr6 steel without unnecessary premium features. * **Wide Availability & Proven Track Record:** As a standard workhorse grade, it is widely available in various forms and sizes, backed by extensive industrial experience and application knowledge. ## **International Standards & Designations** Ovako 803A conforms to and often exceeds the requirements of standard international bearing steel specifications. | Region/Standard | Standard Designation | Equivalent / Similar Grade | Notes | | :--- | :--- | :--- | :--- | | **EUR (EN)** | **1.3505** (100Cr6) | The direct standard specification. | 803A represents Ovako's branded, quality-assured version of this standard. | | **ISO** | **ISO 683-17: 100Cr6** | Standard for through-hardening bearing steel. | | | **USA (AISI/ASTM)** | **52100** | The most common direct equivalent. | 803A is comparable to standard, commercially available 52100 bearing steel. | | **Japan (JIS)** | **SUJ2** | | | | **Germany (DIN / W-Nr.)** | **100Cr6 / 1.3505** | | | | **Ovako Designation** | **803A** | "A" denotes the standard, high-quality grade within the 803-series family. | | ## **Chemical Composition (Typical - %)** The composition adheres strictly to the standard 100Cr6 specification, ensuring reliable hardenability and performance. | Element | Content (%) | Role | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Provides the high hardness and wear resistance through martensite formation and carbide formation upon hardening. | | **Chromium (Cr)** | 1.35 - 1.60 | Improves hardenability, promotes fine and stable carbide formation, and enhances wear resistance. | | **Manganese (Mn)** | 0.25 - 0.45 | Increases hardenability and strength. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer, increases strength and resistance to tempering. | | **Phosphorus (P)** | ≤ 0.025 | Impurity; kept low to maintain good toughness. | | **Sulfur (S)** | ≤ 0.020 | Impurity; kept at a controlled, standard low level. | | **Nickel (Ni), Copper (Cu)** | ≤ 0.25 (each) | Residual elements; typical levels for standard quality. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (Spheroidize Annealed Condition)** * **Delivery Hardness:** **190 - 220 HB** (Typical aim: ~205 HB). Standard range for machining. * **Microstructure:** **Spheroidized carbides** in a ferritic matrix. A uniform, well-annealed structure. * **Tensile Strength:** ~650 - 800 MPa * **Yield Strength (Rp0.2):** ~400 - 550 MPa * **Elongation (A5):** ~15 - 25% * **Reduction of Area (Z):** ~40 - 60% * **Density:** 7.83 g/cm³ * **Thermal Conductivity:** ~46 W/(m·K) at 20°C * **Coefficient of Thermal Expansion:** ~11.5 x 10⁻⁶/K (20-100°C) ## **Properties After Hardening & Tempering (Indicative)** * **Final Hardness (Quenched & Tempered):** **59 - 63 HRC** (depending on tempering temperature). * **Fatigue Life:** **Good**, suitable for a wide range of general and industrial applications. ## **Typical Applications** This versatile spheroidize annealed material is the go-to choice for a vast array of common precision components. * **General Industrial Bearings:** Ball and roller bearings for electric motors, fans, pumps, appliances, and general machinery. * **Automotive Components:** Bearings and precision parts for non-critical automotive systems (e.g., idler pulleys, tensioners). * **Machine Elements:** Gears, shafts, pins, bushings, and rollers across various industries. * **Agricultural & Off-Highway Equipment:** Durable components for moderate-duty applications. * **Hand Tools & Hardware:** High-quality tool components requiring wear resistance after heat treatment. ## **Processing Guidelines** * **Machining:** All machining should be performed in the soft, spheroidize annealed condition. It offers good machinability with standard tooling and cutting parameters for steels of ~200 HB hardness. * **Heat Treatment (Customer Process):** 1. **Preheating:** Recommended at 650-700°C to reduce thermal shock. 2. **Austenitizing:** 830-860°C in a controlled atmosphere to prevent decarburization. 3. **Quenching:** Oil quenching is standard. 4. **Tempering:** 150-200°C for 1-3 hours to achieve final hardness and relieve stresses. * **Grinding:** After hardening, standard grinding practices apply to achieve final dimensions and surface finish. ## **Summary** **Ovako 100Cr6 803A Steel in the Spheroidize Annealed condition** is the **reliable, high-performance standard** for bearing steel. It delivers the proven benefits of 100Cr6/52100—excellent hardenability, high wear resistance, and good fatigue life—in a consistent, well-processed form that is ready for efficient manufacturing. For the vast majority of applications that do not require the specialized capabilities of more advanced grades, 803A provides an optimal, cost-effective solution without compromise on fundamental quality. It is the trusted starting point for countless precision components worldwide, forming the backbone of modern mechanical systems. -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803A Steel, Spheroidize annealing Specification Dimensions Size： Diameter 20-1000 mm Length <5267 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. -: Ovako 100Cr6 803A Steel, Spheroidize annealing Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako 100Cr6 803A Steel Rod, Spheroidize annealing -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako 100Cr6 803A Steel Rod, Spheroidize annealing -:- For detailed product information, please contact sales. -:

Packing of Ovako 100Cr6 803A Steel Rod, Spheroidize annealing -:- 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 1738 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