AISI 1044 Steel Flange

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: AISI 1044 Steel Flange, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1044 Steel Flange, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1044 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1044 Hot Rolled Steel Round Bar (19-32 mm / 0.75-1.25 in)** --- #### **1. Product Overview** AISI 1044 is a medium-high carbon steel supplied in the hot-rolled condition, characterized by its balanced carbon-manganese composition that provides good strength, moderate hardenability, and reasonable ductility. The hot-rolled process produces bars with a characteristic mill scale surface, offering a cost-effective material solution for applications requiring reliable mechanical properties without the additional expense of cold finishing or heat treatment. The 19-32 mm (0.75-1.25 in) diameter range represents a versatile size for general manufacturing and mechanical applications. --- #### **2. Key Characteristics** - **Good Strength-to-Cost Ratio**: Provides higher strength than lower-carbon steels at economical cost - **Moderate Hardenability**: Suitable for heat treatment applications with proper quenching - **Machinable in Annealed Condition**: Can be readily machined with appropriate tooling and parameters - **Good Wear Resistance**: Higher carbon content provides inherent wear resistance - **Hot Workable**: Excellent for forging and other hot forming operations - **Weldable with Precautions**: Requires proper pre-heating and post-weld treatment --- #### **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.43 - 0.50 | SAE J403 / ASTM A29 | | **Manganese (Mn)** | 0.60 - 0.90 | SAE J403 / ASTM A29 | | **Phosphorus (P)** | ≤ 0.040 | SAE J403 / ASTM A29 | | **Sulfur (S)** | ≤ 0.050 | SAE J403 / ASTM A29 | | **Silicon (Si)** | 0.15 - 0.35 | SAE J403 / ASTM A29 | | **Iron (Fe)** | Balance | - | *Note: Some specifications may permit manganese up to 1.00% for improved hardenability.* --- #### **4. Typical Mechanical Properties (Hot-Rolled Condition)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 620 - 760 MPa (90 - 110 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 415 - 550 MPa (60 - 80 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 15% - 20% | ASTM A370 | | **Reduction of Area** | 40% - 50% | ASTM A370 | | **Brinell Hardness** | 179 - 235 HB | ASTM E10 | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) | ASTM E111 | | **Shear Modulus** | 80 GPa (11,600 ksi) | - | | **Poisson's Ratio** | 0.29 | - | | **Machinability (Annealed)** | ~45% (relative to 1212 steel) | - | --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density** | 7.87 g/cm³ (0.284 lb/in³) | | **Melting Point** | 1460 - 1510°C (2660 - 2750°F) | | **Thermal Conductivity** | 48.6 W/m·K (33.7 BTU·in/hr·ft²·°F) | | **Specific Heat Capacity** | 486 J/kg·K (0.116 BTU/lb·°F) | | **Coefficient of Thermal Expansion** | 11.3 µm/m·°C (6.3 µin/in·°F) 20-100°C | | **Electrical Resistivity** | 0.220 µΩ·m | --- #### **6. International Standard Equivalents** | Standard System | Designation | Comparable Specification | |----------------|-------------|--------------------------| | **UNS** | G10440 | Unified Numbering System | | **SAE/AISI** | 1044 | SAE J403 | | **ASTM** | Grade 1044 | ASTM A29 / A576 | | **EN (Europe)** | 1.1193 (C44E) | EN 10083-2 | | **ISO** | C44E | ISO 683-18 | | **JIS (Japan)** | S45C (similar) | JIS G4051 | | **GB (China)** | 45# (45钢) | GB/T 699 | | **DIN (Germany)** | 1.1193, Ck44 | DIN 17200 | --- #### **7. Heat Treatment Response** **Normalizing**: 870-925°C (1600-1700°F), air cool **Annealing**: 790-815°C (1450-1500°F), slow furnace cool **Quenching**: 830-855°C (1525-1575°F), oil or water quench **Tempering**: 425-650°C (800-1200°F) for desired properties **Typical Heat-Treated Properties**: - **Quenched & Tempered**: Tensile 900-1200 MPa, Hardness 30-45 HRC - **Maximum As-Quenched Hardness**: 60-65 HRC - **Surface Hardening**: Induction/flame hardening up to 55-60 HRC --- #### **8. Primary Applications** **Automotive Components**: - Axle shafts and drive shafts - Transmission gears and shafts - Steering system components - High-strength fasteners **Industrial Machinery**: - General purpose shafts and spindles - Gear blanks and sprockets - Hydraulic cylinder rods - Machine tool components **Construction & Agriculture**: - Implement drive shafts - PTO components - Excavator pins and bushings - Wear-resistant parts **Forging Stock**: - Hand tools and wrenches - Agricultural tool components - General hardware forgings --- #### **9. Fabrication Notes** **Machining**: - Best machined in annealed condition - Use carbide tools with positive rake angles - Cutting fluids recommended for extended tool life - Mill scale should be removed for precision machining **Welding**: - Pre-heating (150-260°C/300-500°F) required - Low-hydrogen electrodes (E7018) recommended - Post-weld heat treatment (595-650°C/1100-1200°F) advised - Not recommended for highly stressed welded structures **Forming**: - Excellent hot working characteristics - Moderate cold forming capability with proper radii - Hot working temperature: 1150-1260°C (2100-2300°F) --- #### **10. Quality & Inspection** - Standard mill test reports available - Dimensional tolerances per ASTM A29 - Surface condition: Hot-rolled with mill scale - Optional testing: Ultrasonic, magnetic particle, hardness testing --- **Important Considerations**: 1. Mill scale must be removed for precision applications 2. Higher carbon content requires careful welding procedures 3. Heat treatment significantly enhances mechanical properties 4. Consider normalized condition for improved machinability 5. Section size affects hardenability and achievable properties --- **Disclaimer**: This technical data sheet provides general information. Actual properties may vary based on manufacturer, processing conditions, and specific heat treatment. For critical applications, consult official specifications and conduct appropriate testing. -:- For detailed product information, please contact sales. -: AISI 1044 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4808 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 1044 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1044 Steel Flange, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1044 Steel Flange, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1044 Steel Flange, hot rolled, 19-32 mm (0.75-1.25 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 Flange 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 1279 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