AISI 1045 Steel, hot rolled

AISI 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1045 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 1045 Hot Rolled Steel Round Bar (19-32 mm / 0.75-1.25 in)** --- #### **1. Product Overview** AISI 1045 Hot Rolled Round Bar is a widely used medium-carbon steel supplied in the as-rolled condition with characteristic mill scale surface. With carbon content at the higher end of the standard 10xx series, it offers excellent strength, good wear resistance, and favorable hardenability at economical cost. The 19-32 mm (0.75-1.25 in) diameter range represents a versatile and commonly stocked size suitable for a broad spectrum of mechanical and structural applications where strength and durability are primary considerations. --- #### **2. Key Characteristics** - **High Strength-to-Cost Ratio**: Provides excellent mechanical properties at economical price - **Good Hardenability**: Responds well to quenching and tempering treatments - **Excellent Wear Resistance**: Higher carbon content provides inherent abrasion resistance - **Good Machinability**: Can be effectively machined in annealed or normalized condition - **Hot Workable**: Excellent for forging and other hot forming operations - **Versatile Applications**: Suitable for both mechanical and structural components --- #### **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 allow manganese up to 1.00% for improved hardenability.* --- #### **4. Typical Mechanical Properties (Hot-Rolled Condition)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 625 - 775 MPa (91 - 112 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 430 - 570 MPa (62 - 83 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 14% - 19% | 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)** | ~42% (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** | G10450 | Unified Numbering System | | **SAE/AISI** | 1045 | SAE J403 | | **ASTM** | Grade 1045 | ASTM A29 / A576 | | **EN (Europe)** | 1.1193 (C45E) | EN 10083-2 | | **ISO** | C45E | ISO 683-18 | | **JIS (Japan)** | S45C | JIS G4051 | | **GB (China)** | 45# (45钢) | GB/T 699 | | **DIN (Germany)** | 1.1193, Ck45 | 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 900-1250 MPa, Hardness 30-48 HRC - **Maximum As-Quenched Hardness**: 60-65 HRC - **Surface Hardening**: Induction/flame hardening up to 55-62 HRC --- #### **8. Primary Applications** **Automotive & Transportation**: - Axle shafts and drive shafts - Transmission gears and shafts - Crankshafts and connecting rods - Steering system components - High-strength fasteners and bolts **Industrial Machinery**: - General purpose shafts and spindles - Gear blanks and sprockets - Hydraulic cylinder rods - Machine tool components - Press and forging die components **Construction & Mining**: - Excavator pins and bushings - Drill rods and tooling - Wear plates and liners - Heavy equipment shafts - Crane and hoist components **Agricultural Equipment**: - Tractor transmission parts - Implement drive shafts - PTO shafts and components - Plow shares and cultivator parts **General Manufacturing**: - Forging stock for hand tools - Die blocks and tooling - Bearing races and sleeves - Valve bodies and stems - Wear-resistant components --- #### **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, E8018) recommended - Post-weld heat treatment (595-650°C/1100-1200°F) advised - Not recommended for highly stressed welded structures **Forming**: - Excellent hot working characteristics - Hot working temperature: 1150-1260°C (2100-2300°F) - Moderate cold forming capability with proper radii - Minimum cold bend radius: 3 × diameter --- #### **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 6. Not recommended for applications requiring high impact toughness --- **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. Professional engineering judgment should be applied for specific applications. -:- For detailed product information, please contact sales. -: AISI 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4811 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 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1045 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1045 Steel, 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 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 1282 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