AISI 1050 Steel, hot rolled

AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: # **Technical Datasheet: AISI 1050 Steel - Hot Rolled Round Bar (19-32 mm / 0.75-1.25 in)** --- ## **1. Product Overview** AISI 1050 Hot Rolled Round Bar is a high-carbon steel product supplied in the as-rolled condition with characteristic mill scale surface. With its carbon content at the upper end of the standard 10xx series, this grade offers superior strength, excellent hardenability, and outstanding wear resistance. The hot rolling process provides an economical material with reliable mechanical properties, making it ideal for components requiring high strength, durability, and the potential for subsequent heat treatment or machining. The 19-32 mm (0.75-1.25 in) diameter range is widely used for shafts, gears, and general mechanical applications. --- ## **2. Key Characteristics** - **High Strength Properties**: Excellent tensile and yield strength for a carbon steel - **Superior Hardenability**: Responds exceptionally well to quenching and tempering - **Excellent Wear Resistance**: High carbon content provides good abrasion resistance - **Good Machinability**: Can be effectively machined in annealed or normalized condition - **Hot Workable**: Excellent for forging and other hot forming operations - **Cost-Effective**: Most economical form of high-carbon steel - **Characteristic Surface**: Features blue/black mill scale requiring removal for finishing --- ## **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.48 - 0.55 | 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: The carbon range (0.48-0.55%) places this steel at the higher end of medium-carbon classification, approaching high-carbon steel properties.* --- ## **4. Typical Mechanical Properties (As-Hot Rolled)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 655 - 795 MPa (95 - 115 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 450 - 590 MPa (65 - 86 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 13% - 18% | 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) | ASTM E143 | | **Poisson's Ratio** | 0.29 | ASTM E132 | | **Impact Strength (Charpy V-notch)** | 15 - 30 J (11 - 22 ft-lb) | ASTM A370 | | **Fatigue Strength (10⁷ cycles)** | 280 - 350 MPa | Rotating bending | | **Machinability Rating** | ~35% (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** | 47.8 W/m·K (33.1 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** | 0.235 µΩ·m | | **Magnetic Properties** | Ferromagnetic | --- ## **6. 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), water or oil quench **Tempering**: 200-650°C (400-1200°F) for desired properties **Typical Heat-Treated Properties**: - **Quenched & Tempered**: Tensile 950-1250 MPa, Hardness 30-50 HRC - **Maximum As-Quenched Hardness**: 62-66 HRC - **Surface Hardening**: Induction/flame hardening up to 55-62 HRC - **Hardenability**: Excellent - effective for sections up to 50 mm diameter --- ## **7. International Standard Equivalents** | Standard System | Designation | Comparable Specification | |----------------|-------------|--------------------------| | **UNS** | G10500 | Unified Numbering System | | **SAE/AISI** | 1050 | SAE J403 | | **ASTM** | Grade 1050 | ASTM A29 / ASTM A576 | | **EN (Europe)** | 1.1206 (C53E) | EN 10083-2 | | **ISO** | C53E | ISO 683-18 | | **JIS (Japan)** | S50C / S53C | JIS G4051 | | **GB (China)** | 50# (50钢) | GB/T 699 | | **DIN (Germany)** | 1.1206, Ck53 | DIN 17200 | --- ## **8. Primary Applications** ### **Automotive & Transportation** - Axle shafts and drive shafts - Transmission gears and components - Steering system parts - Suspension components - High-strength fasteners and bolts ### **Industrial Machinery** - General purpose shafts and spindles - Gear blanks and sprockets - Machine tool components - Hydraulic cylinder rods - Press and forging die components ### **Tool & Die Applications** - Cutting tool blanks - Dies and molds - Tool holders and fixtures - Punch and die components - Shear blades and cutting edges ### **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 & Processing** ### **Machining Operations** - Best machined in annealed or normalized condition - Use carbide tools with positive rake angles - Cutting fluids recommended for extended tool life - Mill scale should be removed for precision machining - Recommended cutting speeds: 25-35 m/min (80-115 ft/min) ### **Welding Procedures** - Pre-heating (200-300°C/400-570°F) required - Low-hydrogen electrodes (E8018, E9018) recommended - Post-weld heat treatment (600-650°C/1110-1200°F) advised - Controlled cooling to prevent cracking - Not recommended for highly stressed welded structures ### **Forming & Forging** - Excellent hot working characteristics - Hot working temperature: 1150-900°C (2100-1650°F) - Moderate cold forming capability with proper radii - Minimum cold bend radius: 3 × diameter ### **Surface Preparation** - Scale removal essential for finishing operations - Suitable for painting, plating, or other coatings after proper cleaning - Surface hardening processes enhance wear resistance --- ## **10. Quality & Inspection** - Standard mill test reports typically available - Dimensional tolerances per ASTM A29 for hot-rolled bars - Surface condition: Hot-rolled with characteristic mill scale - Optional testing: Ultrasonic, magnetic particle, hardness testing - Chemical analysis verification available --- ## **11. Comparison with Similar Grades** | Grade | Carbon Range | Tensile (HR) | Hardness (HB) | Key Difference | |-------|-------------|--------------|---------------|----------------| | **AISI 1045** | 0.43-0.50% | 625-775 MPa | 179-229 | Lower carbon, better machinability | | **AISI 1050** | 0.48-0.55% | 655-795 MPa | 179-235 | Balanced high-carbon properties | | **AISI 1055** | 0.50-0.60% | 670-820 MPa | 187-241 | Higher carbon, better wear resistance | | **AISI 1060** | 0.55-0.65% | 685-835 MPa | 201-255 | Maximum carbon in standard range | --- **Important Considerations**: 1. Mill scale must be removed for precision applications and welding 2. Heat treatment significantly enhances mechanical properties 3. Consider annealed condition for improved machinability 4. Proper welding procedures are critical due to high carbon content 5. Section size affects achievable hardness and properties 6. Always verify material certification for critical applications --- **Disclaimer**: This technical data sheet provides general information about AISI 1050 hot-rolled steel. Actual properties may vary based on manufacturer, rolling conditions, and specific production parameters. For engineering applications, consult official material specifications and conduct appropriate testing. Professional engineering judgment should be applied for specific applications. --- **Revision**: 1.0 **Date**: November 2023 **Status**: Current Specification **Contact**: Technical Services Department -:- For detailed product information, please contact sales. -: AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4831 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 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1050 Steel, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1050 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 1302 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