Ovako 100Cr6 5620 Steel, +AC

Ovako 100Cr6 5620 Steel, +AC, Round bar Product Information -:- For detailed product information, please contact sales. -: Ovako 100Cr6 5620 Steel, +AC, Round bar Synonyms -:- For detailed product information, please contact sales. -:

Ovako 100Cr6 5620 Steel, +AC, Round bar Product Information -:- For detailed product information, please contact sales. -: # **Ovako 100Cr6 5620 Steel – +AC (Annealed & Controlled Cooled), Round Bar** ## **Product Overview** Ovako 100Cr6 5620 +AC is a **pre-conditioned forging and machining stock** supplied as round bar in an **annealed and controlled cooled (+AC) condition**. The **"5620"** designation signifies Ovako's forging-optimized quality of 100Cr6 (AISI 52100), while the **"+AC"** suffix indicates that the material has undergone a specific thermal treatment after hot rolling or forging. This process involves annealing followed by controlled cooling to produce a **soft, uniform, and stable microstructure** ideal for subsequent cold sawing, machining, or direct hot forging with minimal risk of cracking. This product bridges the gap between as-rolled bar and fully spheroidize annealed material, offering an optimal balance of cost-effectiveness, machinability, and material consistency for component manufacturers. ## **Key Features & Benefits** * **Optimized for Manufacturing Efficiency:** The +AC treatment transforms the as-rolled microstructure into a **softer, more homogeneous state (typically 200-240 HB)** compared to direct as-rolled bars. This significantly improves **cold sawability and machinability**, reducing cutting tool wear, power consumption, and processing time during blanking operations. * **Reduced Internal Stresses & Improved Stability:** The controlled cooling process after annealing helps to **relieve internal stresses** inherited from the hot rolling process. This results in a more dimensionally stable bar stock that is less prone to warping or distortion during subsequent machining or reheating for forging, ensuring better process predictability. * **Uniform Microstructure for Consistent Processing:** The treatment ensures a **uniform ferrite-pearlite or partially spheroidized microstructure** throughout the bar cross-section. This uniformity provides consistent material behavior during cold working, heating, and ultimately during the final heat treatment of the finished component. * **Ideal Pre-Condition for Forging:** For customers performing hot forging, the +AC condition serves as an excellent starting point. The uniform hardness and relieved stresses allow for **even and predictable heating** in the forge furnace, promoting uniform material flow in the dies and reducing the risk of thermal shock or cracking during initial heating stages. * **Cost-Effective Intermediate Condition:** It offers a more favorable starting condition than as-rolled bar for many applications, without the full cost of a complete spheroidize anneal. This makes it a **highly practical and economical choice** for a wide range of manufacturing routes. ## **International Standards & Designations** This is Ovako's processed version of forging-quality bar stock. | Region/Standard | Standard Designation | Equivalent / Similar Grade | Key Characteristic | | :--- | :--- | :--- | :--- | | **EUR (EN)** | **1.3505** (100Cr6) | Base material standard. | Annealed & Controlled Cooled forging quality. | | **ISO** | **ISO 683-17: 100Cr6** | Standard for through-hardening bearing steel. | Softened condition for machining/forging. | | **USA (AISI/ASTM)** | **52100 (Annealed Forging Bar)** | Often referred to as "softened" or "annealed" 52100 bar stock. | | | **Ovako Designation** | **5620 +AC** | "5620" = forging quality; **"+AC" = Annealed & Controlled Cooled** delivery condition. | | ## **Chemical Composition (Typical - %)** The composition is the standard, forging-optimized 100Cr6 5620 chemistry. | Element | Content (%) | Role | | :--- | :--- | :--- | | **Carbon (C)** | 0.98 - 1.10 | Basis for final hardness. Uniform distribution ensured by processing. | | **Chromium (Cr)** | 1.35 - 1.60 | Provides hardenability and wear resistance. | | **Manganese (Mn)** | 0.25 - 0.45 | Enhances hardenability and strength. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer and strengthener. | | **Phosphorus (P)** | ≤ 0.020 | Controlled low level. | | **Sulfur (S)** | ≤ 0.015 | Controlled level for forgeability. | | **Iron (Fe)** | Balance | | ## **Physical & Mechanical Properties (+AC Condition)** * **Delivery Condition:** **Annealed & Controlled Cooled (+AC) Round Bar**. * **Typical Hardness:** **200 - 240 HB** (Softer than as-rolled, harder than fully spheroidize annealed). * **Microstructure:** **Fine lamellar pearlite and ferrite**, or a very fine **partial spheroidized structure**. More uniform than as-rolled structure. * **Tensile Strength:** ~650 - 850 MPa * **Yield Strength (Rp0.2):** ~400 - 550 MPa * **Sawability & Machinability:** **Good**. Superior to as-rolled condition, facilitating easier blank preparation. ## **Subsequent Processing Pathways** The +AC condition is designed for flexibility, supporting two primary manufacturing routes: 1. **Path A: Hot Forging** * The bars are cut to length and reheated for forging. The uniform +AC structure allows for predictable and uniform heating. * **Forging Temperature Range:** 1050 - 1150°C. * **Post-Forging:** Forgings must undergo **normalizing and full spheroidize annealing** before final machining and hardening. 2. **Path B: Machining to Finished Part (for simpler shapes)** * For components that do not require forging (e.g., simple rings, shafts), the +AC bar can be **machined directly to near-net shape**. * **Post-Machining:** The machined component **must undergo a full spheroidize anneal** before final hardening and tempering to ensure optimal microstructure for heat treatment. ## **Typical Applications** This material serves as premium feedstock for a variety of component manufacturing processes. * **Forging Blanks for Automotive:** Pre-cut blanks for crankshafts, bearing races, gear blanks, and connecting rods. * **Machining Stock for Industrial Parts:** Round bar for machining rollers, sleeves, pins, and non-forged shafts where the +AC condition improves turnaround time. * **General Engineering & Repair:** Stock material for manufacturing or repairing high-strength, wear-resistant parts. ## **Summary** **Ovako 100Cr6 5620 Steel in the +AC (Annealed & Controlled Cooled) condition** is a **pragmatically processed raw material** that adds significant value to the manufacturing chain. By delivering bar stock in a softened, stress-relieved, and uniform state, it removes variability and difficulty from the initial processing steps, whether that involves cold sawing or reheating for forging. It represents an intelligent supply condition that enhances productivity, reduces tooling costs, and provides a consistent foundation for producing high-quality forged or machined components from the reliable 100Cr6/52100 alloy. -:- For detailed product information, please contact sales. -: Ovako 100Cr6 5620 Steel, +AC, Round bar Specification Dimensions Size： Diameter 20-1000 mm Length <5284 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 5620 Steel, +AC, Round bar Properties -:- For detailed product information, please contact sales. -:

Applications of Ovako 100Cr6 5620 Steel, +AC, Round bar -:- For detailed product information, please contact sales. -: Chemical Identifiers Ovako 100Cr6 5620 Steel, +AC, Round bar -:- For detailed product information, please contact sales. -:

Packing of Ovako 100Cr6 5620 Steel, +AC, Round bar -:- 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 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 1755 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