100Cr6 803N Steel Rod/Bar

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

Ovako 100Cr6 803N Steel, Spheroidize annealing Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100Cr6 803N Steel – Spheroidize Annealed Condition** ## **Product Overview** Ovako 100Cr6 803N is a **specialized, surface-quality enhanced bearing steel** supplied in the **spheroidize annealed condition**, engineered for applications where **exceptional surface finish and polishability** are critical performance requirements. The **"N"** designation signifies its optimization for superior **surface integrity and aesthetic finish** (often associated with "Finish" or "Surface" quality), achieved through precise control of steelmaking and annealing processes to minimize surface and subsurface defects. This grade is the material of choice for manufacturing components that require mirror-like polishes, precise etching, or are subject to stringent visual and surface inspection criteria. ## **Key Features & Benefits** * **Superior Surface Finish & Polishability:** The primary advantage of the 803N grade is its ability to be polished to extremely high surface finishes (e.g., Ra < 0.01 µm). This is achieved through a combination of **enhanced micro-cleanliness, minimized surface decarburization, and a controlled, homogeneous spheroidized carbide structure**. The steel is less prone to revealing inclusions, pits, or carbide pull-outs during polishing. * **Excellent Etching & Texturing Characteristics:** The uniform and fine microstructure provides a consistent and predictable base for photo-etching, laser engraving, and other surface texturing processes. Etch lines are sharp and well-defined, with minimal background noise or uneven material removal. * **Reduced Surface & Subsurface Defects:** Specialized processing minimizes defects such as seams, laps, non-metallic inclusions near the surface, and excessive decarburization. This results in a more reliable material surface that performs predictably under contact stresses and meets high visual standards. * **Good Machinability & Consistent Hardening Response:** The spheroidize annealed condition (~200 HB) ensures good machinability for shaping components. The homogeneous microstructure also promotes uniform response during final heat treatment, leading to consistent hardness and minimal risk of surface-related heat treatment issues. * **Ideal for Decorative & Precision Functional Parts:** Uniquely suited for applications where surface appearance is as important as mechanical performance, bridging the gap between engineering functionality and visual perfection. ## **International Standards & Designations** The 803N grade represents a surface-quality enhanced variant within bearing steel specifications. | Region/Standard | Standard Designation | Equivalent / Similar Grade | Key Characteristic | | :--- | :--- | :--- | :--- | | **EUR (EN)** | **1.3505** (100Cr6) | Base material standard with enhanced surface quality. | Polishability-optimized grade. | | **ISO** | **ISO 683-17: 100Cr6** | Standard for through-hardening bearing steel. | Special surface quality. | | **USA (AISI/ASTM)** | **52100 (Polish Quality)** | Often referred to as "52100 PQ" or "52100 with improved surface finish". | | | **Japan (JIS)** | **SUJ2 (Special Surface)** | | | | **Ovako Designation** | **803N** | **"N" denotes optimization for superior surface finish and polishability.** | | ## **Chemical Composition (Typical - %)** The composition adheres to strict 100Cr6 limits with enhanced controls on elements affecting surface quality. | Element | Content (%) | Role & Special Characteristic | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Provides high hardness. Uniform distribution is critical to prevent soft spots after polishing. | | **Chromium (Cr)** | 1.35 - 1.60 | Improves hardenability and wear resistance. | | **Manganese (Mn)** | 0.25 - 0.45 | Increases hardenability. Controlled to minimize banding. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer. Level controlled to optimize polishability. | | **Phosphorus (P)** | **≤ 0.015** | Kept very low to improve polishability and reduce the risk of etch-related issues. | | **Sulfur (S)** | **≤ 0.005** | **Very low.** Essential for minimizing MnS inclusions that can be exposed during polishing, creating visible pits or streaks. | | **Oxygen [O]** | **< 10 ppm** | Extremely low to minimize hard, abrasive oxide inclusions (e.g., Al₂O₃) that can cause scratches during polishing and act as visual defects. | | **Calcium (Ca)** | Possibly treated | May involve calcium treatment for inclusion shape control to form softer, more deformable inclusions that are less detrimental to surface finish. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (Spheroidize Annealed Condition)** * **Delivery Hardness:** **190 - 215 HB** (Consistent for uniform machining) * **Surface Condition:** **Superior.** Minimal decarburization, reduced surface seams, and controlled roughness as-supplied. * **Microstructure:** Exceptionally uniform and fine **spheroidized carbide** distribution in ferrite matrix. Carbides are small and evenly spaced to prevent "orange peel" effect during high-polish. * **Tensile Strength:** ~650 - 750 MPa * **Yield Strength (Rp0.2):** ~400 - 500 MPa * **Elongation (A5):** ~18 - 28% * **Polishability Rating:** **Excellent.** Capable of achieving optical-grade mirror finishes (e.g., SPI-SPE A1 / #1 Diamond finish). ## **Properties After Hardening & Tempering (Indicative)** * **Final Hardness (Quenched & Tempered):** **60 - 64 HRC** (with high surface integrity) * **Post-Polish Surface Integrity:** Maintains a flawless surface without revealing subsurface defects after hardening and final polishing. ## **Typical Applications** This spheroidize annealed material is specified for high-visibility and precision-surface components. * **Plastic Injection Mold Cavities & Cores:** For optical lenses, cosmetic packaging, automotive lenses, and consumer electronics where a flawless, high-gloss surface finish on the molded part is critical. * **Die Casting Dies for Visible Parts:** For automotive trim, decorative hardware, and appliance components. * **Precision Gauge Blocks & Metrology Masters:** Where surface finish affects measurement accuracy and wear characteristics. * **High-End Cutlery & Surgical Blades:** Where a perfect, defect-free cutting edge and surface are required. * **Decorative Hardware & Wear-Resistant Ornamental Components.** ## **Processing Guidelines** * **Machining:** Perform all machining in the soft, annealed condition. Use sharp tools and proper feeds/speeds to avoid work hardening or tearing the surface, which could compromise final polishability. * **Polishing & Texturing:** * **Polishing:** Responds exceptionally well to sequential abrasive polishing. The uniform carbide structure prevents "carbide pull-out." * **Etching:** Ideal for photochemical etching due to uniform material removal and high contrast. * **Heat Treatment (Customer Process):** **Critical to preserve surface quality.** 1. **Protection:** Must be performed in a **vacuum furnace or highly controlled protective atmosphere** to prevent any surface oxidation or carburization/decarburization. 2. **Austenitizing:** 830-850°C under high vacuum or partial pressure. 3. **Quenching:** Gas quenching (under pressure) is preferred to avoid quenching stains or residue from oil. 4. **Tempering:** Standard double tempering. * **Final Polishing:** A final light polish is often required after heat treatment to restore the surface to the desired finish level. ## **Summary** **Ovako 100Cr6 803N Steel in the Spheroidize Annealed condition** is the **definitive material for applications where surface perfection is paramount**. It transcends standard bearing steel functionality by addressing the metallurgical factors that limit ultimate surface finish. By delivering exceptional polishability, etching clarity, and surface integrity, it enables the manufacture of components that are not only mechanically robust but also visually flawless. For mold makers, precision engineers, and designers of high-end consumer and optical products, 803N provides the essential material foundation to achieve both aesthetic excellence and enduring performance. -:- For detailed product information, please contact sales. -: Ovako 100Cr6 803N Steel, Spheroidize annealing Specification Dimensions Size： Diameter 20-1000 mm Length <5275 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 803N Steel, Spheroidize annealing Properties -:- For detailed product information, please contact sales. -:

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

Packing of Ovako 100Cr6 803N 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 1746 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