AISI 1044 Steel Capillary

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

Packing of AISI 1044 Steel Capillary, 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 Capillary 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