AISI 8822H Steel Rod/Bar

AISI 8822H Steel Rod, normalized Product Information -:- For detailed product information, please contact sales. -: AISI 8822H Steel Rod, normalized Synonyms -:- For detailed product information, please contact sales. -:

AISI 8822H Steel, normalized Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 8822H Steel, Normalized Condition** #### **1. Overview** AISI 8822H is a **hardenability-controlled (H-grade) nickel-chromium-molybdenum (Ni-Cr-Mo) alloy steel** belonging to the premium 8800 series, characterized by its **elevated nickel content**. Supplied in the **normalized condition**—heated to approximately 900-925°C (1650-1700°F) and uniformly air-cooled—this material represents a high-grade, pre-conditioned stock engineered for maximum consistency and reliability. The "H" designation guarantees that the steel's transformation characteristics fall within a narrow, specified band as verified by end-quench (Jominy) testing, ensuring **exceptional batch-to-batch uniformity** in final core properties after carburizing. Combined with the inherent **superior toughness and hardenability** imparted by higher nickel levels, normalized AISI 8822H provides an optimal foundation for manufacturing critical components where performance predictability, impact resistance, and dimensional stability are paramount. #### **2. International Standards & Designations** This material condition conforms to international standards governing both composition and guaranteed hardenability. | Region/System | Standard Designation | Title / Purpose | | :--- | :--- | :--- | | **USA (AISI/SAE)** | **AISI 8822H, SAE J404 & SAE J1268** | Chemical Composition & Hardenability Bands | | **USA (ASTM)** | **ASTM A304** | Standard Specification for Steel Bars Subject to End-Quench Hardenability Requirements | | **Heat Treatment Reference** | **SAE AMS-H-6875** | Heat Treatment of Steel, General Requirements | | **UNS Number** | **H88220** | Unified Numbering System for H-Steels | | **Europe (EN)** | **1.6524H / 22NiCrMoS2-2H** | Hardenability-controlled Equivalent | | **Quality Assurance** | **AMS 2300** | Premium Aircraft-Quality Steel Cleanliness (Optional) | #### **3. Chemical Composition & Hardenability Guarantee** The composition is tightly controlled, with elevated nickel as the key differentiator, and the entire chemistry optimized to meet precise H-band specifications. **Core Composition (% by Weight, AISI 8822H):** | Element | Content Range | Metallurgical Significance | | :--- | :--- | :--- | | **Carbon (C)** | 0.19 - 0.25 | Provides base strength; tightly controlled for H-band consistency. | | **Manganese (Mn)** | 0.75 - 1.00 | Enhances hardenability; range adjusted for predictable Jominy curve. | | **Phosphorus (P)** | ≤ 0.025 | Reduced impurity level for improved ductility. | | **Sulfur (S)** | ≤ 0.025 | Controlled impurity level for optimal balance of machinability and properties. | | **Silicon (Si)** | 0.15 - 0.35 | Deoxidizer; solid solution strengthener. | | **Nickel (Ni)** | **0.50 - 0.80** | **Primary Differentiator:** Significantly enhances core toughness and hardenability; content stabilized for exceptional consistency. | | **Chromium (Cr)** | 0.40 - 0.65 | Increases hardenability; promotes wear-resistant carbides. | | **Molybdenum (Mo)** | 0.20 - 0.30 | Strong hardenability element; suppresses temper embrittlement. | **Key Feature: Guaranteed Hardenability Band** The material is supplied with certified Jominy end-quench test results guaranteed to fall within a specified narrow hardness band. This ensures **predictable and uniform core hardness and microstructure** after final heat treatment, with minimal lot-to-lot variation—a critical advantage for high-reliability manufacturing. #### **4. Mechanical & Physical Properties (Normalized Condition)** Normalization produces a fine, homogeneous ferritic-pearlitic structure with enhanced and consistent properties. **Typical As-Normalized Properties:** * **Hardness:** **187 - 229 HB** (Brinell) or **89 - 97 HRB**. Provides excellent machinability with superior consistency. * **Ultimate Tensile Strength (UTS):** **620 - 800 MPa** (90 - 116 ksi) * **Yield Strength (0.2% Offset):** **430 - 620 MPa** (62 - 90 ksi) * **Elongation:** **18% - 22%** * **Reduction of Area:** **45% - 55%** * **Charpy V-Notch Impact Toughness (20°C):** **70 - 100 J** (52 - 74 ft-lbf) – **Exceptional due to high nickel content.** * **Charpy V-Notch Impact Toughness (-40°C):** **40 - 70 J** (30 - 52 ft-lbf) * **Machinability Rating:** **~55%** of B1112 steel. Offers predictable tool wear and excellent surface finish. * **Microstructure:** Fine, uniform distribution of pearlite in a ferrite matrix; ASTM grain size 7-8. **Physical Properties:** * **Density:** **7.85 g/cm³** * **Modulus of Elasticity:** **205 GPa** * **Poisson's Ratio:** **0.29** * **Thermal Conductivity:** **~45 W/m·K** at 100°C * **Coefficient of Thermal Expansion:** **12.2 × 10⁻⁶/°C** (20-100°C) #### **5. Product Applications** Normalized AISI 8822H is specified for the most demanding applications where guaranteed material consistency, superior toughness, and high reliability are non-negotiable. * **Aerospace Critical Components:** Landing gear parts, actuator components, and transmission gears where material consistency is certified. * **High-Performance Automotive:** Racing transmission gears, high-stress drivetrain components, and critical fasteners. * **Oil & Gas Drilling Equipment:** Heavy-duty downhole tools, blowout preventer components, and valve parts for extreme environments. * **Energy Sector:** Gears and shafts for wind turbine gearboxes, critical pump components, and compressor parts. * **Defense Applications:** Tank transmission components, weapon system parts, and armored vehicle drive train elements. * **Heavy Industrial Machinery:** Critical gears for mining excavators, large crushers, and draglines where failure is catastrophic. #### **6. Key Characteristics & Advantages** * **Guaranteed Core Consistency:** The **primary H-grade advantage** ensures uniform core properties after heat treatment, eliminating batch-to-batch performance variation. * **Exceptional Impact Toughness:** The high nickel content provides superior resistance to shock and impact loading, significantly outperforming 8620H-series steels. * **Superior Low-Temperature Performance:** Maintains excellent ductility and toughness at temperatures as low as -40°C to -60°C. * **Enhanced Hardenability:** The combined effect of higher alloy content and H-grade control allows through-hardening of large, complex sections with predictable results. * **Optimal Manufacturing Foundation:** The normalized condition provides exceptional dimensional stability and uniform machinability, reducing distortion during subsequent processing. * **High Reliability:** The combination of H-grade consistency and superior intrinsic properties makes this material ideal for applications with severe safety or economic consequences of failure. * **Reduced Quality Assurance Costs:** The certified hardenability band minimizes the need for extensive destructive testing of finished components. **Process Considerations:** * **Normalization Integrity:** Requires precise temperature control and uniform cooling to achieve specified microstructure. * **Machining Optimization:** Benefits from rigid tooling and appropriate cutting parameters due to higher strength. * **Subsequent Heat Treatment:** Provides an ideal, consistent starting condition for carburizing, carbonitriding, or through-hardening processes. **Conclusion:** **AISI 8822H in the normalized condition represents the pinnacle of pre-conditioned alloy steel stock for high-reliability applications.** It successfully combines the **inherent toughness and hardenability advantages of high-nickel steel** with the **production certainty of H-grade certification**. This material is not merely a commodity but a **comprehensive engineering solution** that addresses the critical needs of advanced manufacturing: predictability, performance, and risk mitigation. For industries where component failure carries unacceptable consequences—aerospace, defense, energy, and high-performance transportation—normalized AISI 8822H provides the material assurance needed to achieve design margins with confidence. By offering both superior intrinsic properties and guaranteed consistency, this material enables manufacturers to produce components that deliver identical performance characteristics across all production batches, making it an essential choice for the most demanding engineering applications where quality and reliability cannot be compromised. -:- For detailed product information, please contact sales. -: AISI 8822H Steel, normalized Specification Dimensions Size： Diameter 20-1000 mm Length <5750 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 8822H Steel, normalized Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 8822H Steel Rod, normalized -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 8822H Steel Rod, normalized -:- For detailed product information, please contact sales. -:

Packing of AISI 8822H Steel Rod, normalized -:- 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 2221 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