AISI 1050 Steel Sheet,Plate

AISI 1050 Steel Sheet/Plate, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1050 Steel Sheet/Plate, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1050 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: # **Technical Datasheet: AISI 1050 Cold Drawn Steel Round Bar (19-32 mm / 0.75-1.25 in)** --- ## **1. Product Overview** AISI 1050 Cold Drawn Round Bar is a high-carbon, non-alloy steel product manufactured through a cold drawing process that significantly enhances mechanical properties, dimensional accuracy, and surface finish. With carbon content at the higher end of the standard carbon steel range, this grade offers exceptional strength, excellent wear resistance, and superior hardenability. The cold working process induces substantial strain hardening, resulting in superior yield strength, tight tolerances, and a smooth, scale-free surface ideal for precision mechanical components requiring maximum performance in demanding applications. --- ## **2. Key Characteristics & Advantages** - **Exceptional Strength Properties**: Cold working increases yield strength by 40-60% compared to hot-rolled material - **Superior Dimensional Accuracy**: Maintains tight diameter tolerances (±0.05 mm / ±0.002 in typical) - **Excellent Surface Finish**: Produces smooth, bright surface (0.8-1.6 µm Ra / 32-63 µin Ra) suitable for precision bearing surfaces - **Outstanding Hardenability**: High carbon content provides excellent response to heat treatment - **Excellent Wear Resistance**: Ideal for applications requiring abrasion resistance - **Predictable Performance**: Consistent material characteristics for reliable manufacturing - **Improved Straightness**: Essential for high-precision rotating components and assemblies --- ## **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.48 - 0.55 | ASTM A108 / SAE J403 | | **Manganese (Mn)** | 0.60 - 0.90 | ASTM A108 / SAE J403 | | **Phosphorus (P)** | ≤ 0.040 | ASTM A108 / SAE J403 | | **Sulfur (S)** | ≤ 0.050 | ASTM A108 / SAE J403 | | **Silicon (Si)** | 0.15 - 0.35 | ASTM A108 / SAE J403 | | **Iron (Fe)** | Balance | - | *Note: The high carbon content (0.48-0.55%) provides maximum strength and hardness potential for non-alloy steels.* --- ## **4. Typical Mechanical Properties (Cold Drawn Condition)** ### **As-Cold Drawn Properties** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 750 - 900 MPa (109 - 131 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 620 - 780 MPa (90 - 113 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 10% - 15% | ASTM A370 | | **Reduction of Area** | 35% - 45% | ASTM A370 | | **Brinell Hardness** | 229 - 285 HB | ASTM E10 | | **Surface Roughness (Ra)** | 0.8 - 1.6 µm (32 - 63 µin) | ASME B46.1 | | **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 | | **Fatigue Strength (10⁷ cycles)** | 350 - 420 MPa | Rotating bending | | **Machinability Rating** | ~30% (relative to 1212 steel) | - | ### **Physical Properties** | Property | Value | |----------|-------| | **Density** | 7.87 g/cm³ (0.284 lb/in³) | | **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 | --- ## **5. Dimensional Specifications & Tolerances** ### **Standard Tolerances (Per ASTM A108)** | Diameter Range (mm) | Diameter Tolerance (±mm) | Out-of-Round (max) | Straightness (mm/m) | |---------------------|--------------------------|-------------------|-------------------| | 19.0 - 22.0 | 0.05 | 0.04 | 0.3 | | 22.1 - 28.0 | 0.05 | 0.05 | 0.4 | | 28.1 - 32.0 | 0.08 | 0.06 | 0.5 | ### **Surface Finish Standards** - **As-drawn**: 0.8-1.6 µm Ra (32-63 µin Ra) - **Polished**: 0.2-0.4 µm Ra (8-16 µin Ra) available - **Ground**: 0.4-0.8 µm Ra (16-32 µin Ra) upon request - **Special Finishes**: Chrome plated, nickel plated options --- ## **6. International Standard Equivalents** | Standard System | Designation | Primary Specification | |----------------|-------------|----------------------| | **UNS** | G10500 | Unified Numbering System | | **SAE/AISI** | 1050 | SAE J403 | | **ASTM** | Grade 1050 | ASTM A108 (Cold-Finished) | | **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 | --- ## **7. Heat Treatment Response & Capabilities** ### **Recommended Heat Treatment Parameters** | Process | Temperature Range | Holding Time | Cooling Method | |---------|------------------|--------------|----------------| | **Annealing** | 790-815°C (1450-1500°F) | 1-2 hr/inch | Furnace cool ≤55°C/hr | | **Normalizing** | 870-925°C (1600-1700°F) | 30 min/inch | Air cool | | **Quenching** | 830-855°C (1525-1575°F) | 20 min/inch | Water or oil | | **Tempering** | 200-650°C (400-1200°F) | 1-2 hr/inch | Air cool | ### **Typical Heat-Treated Properties (for 19-32 mm diameter)** | Condition | Tensile Strength | Yield Strength | Hardness (HRC) | Impact Energy | |-----------|------------------|----------------|----------------|---------------| | **Q&T @ 200°C** | 1800-2000 MPa | 1650-1850 MPa | 54-58 | 10-20 J | | **Q&T @ 400°C** | 1400-1600 MPa | 1250-1450 MPa | 44-48 | 20-30 J | | **Q&T @ 600°C** | 1000-1200 MPa | 900-1100 MPa | 32-36 | 35-45 J | ### **Hardenability Characteristics** - **Jominy Test Results**: - 1.5 mm (1/16"): 64-66 HRC - 10 mm (3/8"): 50-60 HRC - 20 mm (3/4"): 40-50 HRC - **Maximum Hardness**: 65-67 HRC (as-quenched) - **Ideal Quenchant**: Water for maximum hardness, oil for reduced distortion - **Effective Depth**: Full hardening achievable for 19-32 mm diameter --- ## **8. Primary Applications** ### **High-Performance Automotive Components** - Racing crankshafts and camshafts - High-performance transmission gears - Heavy-duty axle shafts - Steering system precision components - High-strength fasteners and studs - Suspension system high-load components ### **Industrial Machinery & Equipment** - Machine tool spindles and arbors - High-speed pump shafts - Hydraulic cylinder rods for extreme pressure - Precision bearing races and rollers - Heavy-duty gear blanks and pinions - Cutting tool shanks and holders ### **Tool & Die Applications** - Punch and die components - Shear blades and cutting edges - Forming dies and mandrels - Mold bases and inserts - Tool holders and fixtures ### **Agricultural & Construction Equipment** - Heavy-duty PTO shafts - Excavator bucket teeth and adapters - Plow shares and cultivator points - Harvester cutting components - Heavy equipment drive shafts ### **Consumer & Industrial Products** - High-strength bolts and fasteners - Precision shafts for power tools - Exercise equipment components - Industrial cutting blades - Wear-resistant pins and bushings --- ## **9. Fabrication & Processing Guidelines** ### **Machining Operations** - **Tool Selection**: Premium carbide, CBN, or ceramic tools required - **Cutting Parameters**: - Turning: 20-35 m/min (65-115 ft/min) - Milling: 25-40 m/min (80-130 ft/min) - Drilling: 15-25 m/min (50-80 ft/min) - **Coolant Requirement**: High-pressure coolant essential - **Chip Control**: Difficult; chip breakers and positive rake tools recommended - **Surface Integrity**: Grinding often preferred for final dimensions ### **Welding Procedures** - **Pre-heating**: 250-350°C (480-660°F) mandatory - **Electrodes**: E11018, E12018 low-hydrogen required - **Interpass Temperature**: 200-250°C (400-480°F) - **Post-Weld Treatment**: 600-650°C (1110-1200°F) stress relief + full re-HT - **Alternative Joining**: Mechanical fastening or brazing preferred ### **Grinding & Finishing** - **Grinding Wheels**: Aluminum oxide or CBN wheels - **Parameters**: Light cuts, frequent dressing - **Surface Finish**: Capable of <0.2 µm Ra with proper technique - **Stress Relief**: Additional tempering may be needed after heavy grinding ### **Forming & Bending** - **Cold Forming**: Very limited; annealing recommended first - **Hot Forming**: 1150-900°C (2100-1650°F) optimal range - **Bend Radius**: Minimum 4-5× diameter for cold bending - **Springback**: Significant; account for in tool design --- ## **10. Quality Assurance & Inspection** ### **Standard Testing Requirements** | Test Type | Frequency | Standard | Acceptance Criteria | |-----------|-----------|----------|-------------------| | Chemical Analysis | Per heat | ASTM E415 | Within specification | | Tensile Test | Per lot | ASTM A370 | Meet minimum values | | Hardness Test | Per bundle | ASTM E10 | Within specified range | | Surface Finish | Per batch | ASME B46.1 | ≤1.6 µm Ra | | Dimensional | 100% | ASTM A108 | Within tolerance | | Straightness | 100% | - | ≤0.5 mm/m | ### **Advanced Testing Options** - **Ultrasonic Testing**: Detect internal defects - **Magnetic Particle**: Surface crack detection - **Microstructural Analysis**: ASTM E112 grain size - **Residual Stress**: X-ray diffraction measurement - **Fatigue Testing**: Rotating bending or axial - **Fracture Toughness**: ASTM E1820 testing available ### **Certification & Documentation** - **Mill Test Reports**: Complete traceability - **Chemical Certificate**: Each heat analysis - **Mechanical Certificate**: Each test lot - **Process Certificates**: Cold drawing parameters - **NDT Reports**: Upon customer request - **Material Traceability**: Full chain of custody --- ## **11. Storage, Handling & Packaging** ### **Storage Conditions** - **Environment**: Controlled humidity (<50% RH) - **Temperature**: 15-25°C (59-77°F) stable - **Protection**: VCI paper or protective coating - **Stacking**: Maximum 1.5m height with proper supports - **Separation**: By grade, size, and heat number ### **Packaging Standards** - **Individual Protection**: Plastic end caps, VCI wrapping - **Bundling**: Steel strapping with edge protection - **Identification**: Clear, weather-resistant labeling - **Shipping**: Secured to prevent movement ### **Handling Procedures** - **Lifting**: Non-marring nylon slings - **Transportation**: Flatbed with proper securing - **Unloading**: Avoid dropping or impact - **Inspection**: Visual check upon receipt --- ## **12. Comparison with Competitive Grades** ### **Performance Comparison** | Grade | Carbon % | Yield Strength (CD) | Hardness (HB) | Machinability | Cost Index | |-------|----------|---------------------|---------------|---------------|------------| | **1045 CD** | 0.43-0.50 | 585-725 MPa | 207-255 | 40% | 100 | | **1050 CD** | 0.48-0.55 | 620-780 MPa | 229-285 | 30% | 105 | | **1060 CD** | 0.55-0.65 | 650-820 MPa | 241-302 | 25% | 110 | | **4140 CD** | 0.38-0.43 | 655-795 MPa | 197-255 | 45% | 130 | ### **Application Selection Guide** | Application | Recommended Grade | Reason | |-------------|------------------|--------| | Maximum wear resistance | 1050 CD | Highest carbon content | | Precision shafts | 1050 CD | Good dimensional stability | | Heavy-duty fasteners | 1050 CD | Highest strength | | Complex machined parts | 1045 CD | Better machinability | | Critical dynamic loads | 4140 | Better toughness | --- ## **13. Technical Guidelines & Best Practices** ### **Design Considerations** 1. **Stress Concentration**: Minimize sharp corners and notches (Kt < 2.0) 2. **Surface Finish**: Specify ≤0.8 µm Ra for fatigue applications 3. **Heat Treatment**: Plan for distortion allowance (0.1-0.3% typical) 4. **Quality Requirements**: Define testing levels based on application criticality 5. **Safety Factors**: Use 3.0+ for dynamic loading applications ### **Manufacturing Best Practices** 1. **Machining Sequence**: Rough machine → Heat treat → Finish machine 2. **Tool Management**: Regular inspection and replacement 3. **Process Control**: Statistical process monitoring 4. **Quality Verification**: First article and in-process inspection 5. **Documentation**: Complete process records ### **Troubleshooting Guide** | Issue | Possible Cause | Solution | |-------|---------------|----------| | Excessive tool wear | Hard material | Use premium carbide or CBN | | Poor surface finish | Incorrect parameters | Optimize speed/feed/coolant | | Dimensional variation | Temperature changes | Climate control in shop | | Cracking during HT | Rapid heating/cooling | Control heating rates | | Warping after machining | Residual stress | Stress relieve before finish | --- ## **14. Economic & Supply Chain Considerations** ### **Cost Factors** - **Raw Material**: 60-70% of total cost - **Cold Drawing Processing**: 20-30% - **Testing & Certification**: 5-10% - **Packaging/Shipping**: 3-5% ### **Lead Time Considerations** - **Standard Sizes**: 4-6 weeks - **Special Sizes**: 8-10 weeks - **Heat Treatment**: Additional 2-3 weeks - **Testing**: Additional 1-2 weeks ### **Minimum Order Quantities** - **Standard Grades**: 500 kg minimum - **Special Processing**: 1000 kg minimum - **Certified Material**: 2000 kg minimum - **Just-in-Time Programs**: Negotiable based on partnership --- ## **15. Environmental & Sustainability** ### **Environmental Compliance** - **REACH Compliance**: Fully compliant - **RoHS Compliance**: Contains no restricted substances - **Recyclability**: 100% recyclable - **Carbon Footprint**: Lower than equivalent alloy steels ### **Sustainable Practices** - **Energy Efficiency**: Cold drawing reduces energy vs. machining - **Material Efficiency**: Near-net shape processing reduces waste - **Long Service Life**: Durable material reduces replacement frequency - **End-of-Life**: Fully recyclable at end of service --- ## **16. Technical Support & Services** ### **Available Support** - **Material Selection**: Engineering assistance - **Process Optimization**: Manufacturing guidance - **Troubleshooting**: Problem-solving support - **Training**: Technical seminars and workshops ### **Value-Added Services** - **Just-in-Time Delivery**: Inventory management - **Kanban Systems**: Automated replenishment - **Vendor Managed Inventory**: Complete supply chain management - **Technical Documentation**: Complete material data packages --- **Disclaimer**: This technical data sheet provides comprehensive information about AISI 1050 Cold Drawn Steel Bars. Actual properties may vary based on specific manufacturing parameters, heat treatment conditions, and processing history. For critical applications, consult with material engineers, review certified test reports, and conduct application-specific validation testing. Professional engineering judgment should always be applied for safety-critical applications. The high carbon content requires special consideration in fabrication, heat treatment, and application design. --- **Revision**: 1.0 **Date**: November 2023 **Status**: Current Specification **Contact**: Technical Services Department -:- For detailed product information, please contact sales. -: AISI 1050 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4823 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, cold drawn, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

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

Packing of AISI 1050 Steel Sheet/Plate, cold drawn, 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 Sheet/Plate 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 1294 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