AISI 4620H Steel Foil/Strip

AISI 4620H Steel Foil, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: AISI 4620H Steel Foil, annealed, 25 mm (1 in.) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 4620H Steel, annealed, 25 mm (1 in.) round Product Information -:- For detailed product information, please contact sales. -: ### **Technical Product Data Sheet: AISI 4620H Steel – Annealed Condition, 25 mm (1 in.) Round Bar** **1. Product Overview** This product is a hot-rolled or forged **AISI 4620H** alloy steel round bar supplied in the **annealed** condition, with a standard diameter of **25 mm (1 inch)**. The “H” designation indicates that the steel is supplied to specific hardenability band requirements as per standard ASTM A304. The annealed state provides a soft, uniform microstructure with low hardness and excellent machinability, making it an ideal raw material for subsequent machining and final heat treatment, particularly case carburizing. **2. Material Standard & Designation** * **UNS:** H46200 * **AISI/ASTM:** 4620H * **Governing Standard (Bar):** **ASTM A304** - Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements. * **Condition Standard:** Annealed, typically per mill practice or ASTM A291. * **Similar International Standards:** * **EN (Europe):** 20NiCrMo2-2+H (1.6523) * **DIN (Germany):** 20NiCrMo2-2 + H * **JIS (Japan):** SNCM220H * **ISO:** 20NiCrMo2-2- H **3. Chemical Composition (Weight %, ASTM A304 H-Band Ranges)** The composition is controlled to ensure the steel falls within specified hardenability bands (typically, for example, Band 1H to 5H). The following are the standard ranges for 4620H. | Element | Carbon © | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | | :--- | :---: | :---: | :---: | :---: | :---: | :---: | :---: | :---: | | **Range** | 0.17 - 0.22 | 0.45 - 0.65 | ≤ 0.035 | ≤ 0.040 | 0.15 - 0.35 | 1.65 - 2.00 | 0.35 - 0.65 | 0.20 - 0.30 | *Note: The precise “H” band (e.g., 1H, 2H) must be specified by the purchaser. The composition within these ranges ensures consistent and predictable depth of hardening during final heat treatment.* **4. Condition & Typical “As-Supplied” Properties (Annealed, 25mm Round)** * **Microstructure:** Predominantly **fine pearlite and ferrite**, uniform and equiaxed. * **Hardness (Brinell):** **149 - 187 HBW** (typical). Equivalent to approximately **86 - 93 HRB**. * **Tensile Strength (Typical):** 515 - 655 MPa (75 - 95 ksi) * **Yield Strength (Typical):** 275 - 415 MPa (40 - 60 ksi) * **Elongation (Typical):** > 25% in 50 mm * **Machinability:** **Excellent.** The annealed structure provides good chip formation, low tool wear, and superior surface finish compared to harder conditions. **5. Key Characteristics & Advantages** * **Guaranteed Hardenability:** The “H” designation ensures predictable and consistent response to quenching, critical for achieving desired core properties after carburizing or through-hardening, especially in production environments. * **Optimal Machinability:** The soft, annealed state allows for high-speed machining, drilling, and turning with minimal energy consumption and extended tool life. * **Uniform Microstructure:** Annealing eliminates internal stresses from rolling/forging and ensures a homogeneous structure, leading to predictable dimensional changes during final heat treatment. * **Ideal for Carburizing:** The low surface carbon content (<0.25%) is perfect for subsequent carburizing processes, where carbon is added to the surface to create a hard, wear-resistant case. * **Formability:** Can be cold-formed or shaped (within limits) prior to final hardening. **6. Intended Final Heat Treatment & Applications** This material is almost exclusively supplied as a semi-finished product for further manufacturing. * **Primary Final Process:** **Case Carburizing** (followed by quenching and tempering) to produce components with a hard, wear-resistant surface and a tough, ductile core. * **Typical End-Use Applications (After machining and heat treatment):** * **Automotive:** Critical gears (transmissions, differentials), camshafts, piston pins, high-strength shafts, and powertrain components. * **Industrial & Heavy Machinery:** Gears, pinions, bearing races, rollers, and high-stress fasteners used in construction, mining, and agricultural equipment. * **Aerospace:** Non-critical structural components and fittings that require good strength-to-weight ratio and toughness. * **General Engineering:** High-performance bolts, studs, and machined parts requiring a combination of surface hardness and core strength. **7. Remarks** * The 25 mm (1 in.) round is a common stock size. Other diameters and forms (squares, flats) are available, but hardenability data and machinability may vary with section size. * The purchaser must specify the required **Hardenability Band (e.g., 4620H, Band 3H)** per ASTM A304 to ensure material consistency for their specific part geometry and quenching process. * This data sheet provides typical values. For critical applications, specific property guarantees should be agreed upon between the supplier and purchaser. --- -:- For detailed product information, please contact sales. -: AISI 4620H Steel, annealed, 25 mm (1 in.) round Specification Dimensions Size： Diameter 20-1000 mm Length <5649 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 4620H Steel, annealed, 25 mm (1 in.) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 4620H Steel Foil, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 4620H Steel Foil, annealed, 25 mm (1 in.) round -:- For detailed product information, please contact sales. -:

Packing of AISI 4620H Steel Foil/Strip, annealed, 25 mm (1 in.) round -:- 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 Foil/Strip 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 2120 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