AISI 1046 Steel, cold drawn

AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1046 Cold Drawn Steel Round Bar (19-32 mm / 0.75-1.25 in)** --- #### **1. Product Overview** AISI 1046 Cold Drawn Round Bar is a medium-carbon steel product manufactured through a cold drawing process that significantly enhances its mechanical properties, dimensional accuracy, and surface finish. This grade features a carbon content slightly higher than AISI 1045, providing improved strength and hardenability while maintaining reasonable ductility. The cold working process induces substantial strain hardening, resulting in superior yield strength and a smooth, scale-free surface ideal for precision components requiring high strength-to-weight ratios and tight dimensional tolerances in demanding mechanical applications. --- #### **2. Key Characteristics & Advantages** - **Enhanced Mechanical Performance:** Cold working increases yield strength by 35-55% compared to hot-rolled equivalents - **Superior Dimensional Accuracy:** Maintains tight diameter tolerances (±0.075 mm / ±0.003 in typical) - **Excellent Surface Finish:** Produces smooth, bright surface (1.6-3.2 µm Ra / 63-125 µin Ra) suitable for bearing applications - **Improved Hardenability:** Higher carbon content provides excellent response to heat treatment - **Good Strength-to-Cost Ratio:** Offers high strength without alloying element costs - **Predictable Machinability:** Consistent material characteristics for reliable manufacturing - **Better Straightness:** Essential for rotating components and precision assemblies --- #### **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.43 - 0.50 | ASTM A108 / SAE J403 | | **Manganese (Mn)** | 0.70 - 1.00 | 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 manganese range (0.70-1.00%) is typically higher than standard 1045 steel, providing improved hardenability characteristics.* --- #### **4. Typical Mechanical Properties (Cold Drawn Condition)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 700 - 850 MPa (102 - 123 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 600 - 740 MPa (87 - 107 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 11% - 16% | ASTM A370 | | **Reduction of Area** | 35% - 45% | ASTM A370 | | **Brinell Hardness** | 217 - 277 HB | ASTM E10 | | **Surface Roughness (Ra)** | 1.6 - 3.2 µm (63 - 125 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 | | **Density** | 7.87 g/cm³ (0.284 lb/in³) | - | | **Machinability Rating** | ~38% (relative to 1212 steel) | - | --- #### **5. Physical & Thermal Properties** | Property | Value | |----------|-------| | **Thermal Conductivity** | 48.2 W/m·K (33.4 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** | 0.225 µΩ·m | | **Magnetic Properties** | Ferromagnetic | | **Melting Point** | 1460 - 1510°C (2660 - 2750°F) | --- #### **6. International Standard Equivalents** | Standard System | Designation | Primary Specification | |----------------|-------------|----------------------| | **UNS** | G10460 | Unified Numbering System | | **SAE/AISI** | 1046 | SAE J403 | | **ASTM** | Grade 1046 | ASTM A108 (Cold-Finished) | | **EN (Europe)** | 1.1193 (Similar to C45E) | EN 10083-2 | | **ISO** | C45E (Similar) | ISO 683-18 | | **JIS (Japan)** | S45C (Similar) | JIS G4051 | | **GB (China)** | 45# (45钢) | GB/T 699 | | **DIN (Germany)** | 1.1193, Ck45 (Similar) | DIN 17200 | *Note: AISI 1046 is not as widely standardized internationally as 1045, but is functionally similar with slight compositional variations.* --- #### **7. Heat Treatment Response** AISI 1046 exhibits excellent response to heat treatment due to its carbon content and elevated manganese: **Recommended Parameters:** - **Annealing:** 790-815°C (1450-1500°F), slow cool (furnace cool preferred) - **Normalizing:** 870-925°C (1600-1700°F), air cool - **Quenching:** 830-855°C (1525-1575°F), oil quench recommended - **Tempering:** 425-650°C (800-1200°F) depending on required properties **Hardenability Data (Typical):** - Maximum as-quenched hardness: 61-65 HRC - Effective hardening depth: Good for sections up to 60 mm (2.4 in) - Typical tempered hardness range: 32-48 HRC - Jominy distance to 50 HRC: 12-18 mm --- #### **8. Primary Applications** Cold drawn AISI 1046 bars are specified for high-strength precision components: **Automotive Components:** - High-performance axle shafts - Transmission gears and shafts - Crankshafts and connecting rods - Steering system heavy-duty components - Suspension system high-stress parts **Industrial Machinery:** - Heavy-duty shafts and spindles - High-load gear blanks - Hydraulic cylinder rods for high-pressure systems - Pump shafts for industrial applications - Machine tool high-strength components **Construction & Mining:** - Heavy-duty drill rods - Excavator high-wear pins and bushings - Mining equipment shafts - Crane and hoist critical components - Heavy equipment drive shafts **Agricultural Equipment:** - Heavy-duty PTO shafts - Tractor transmission gears - Implement high-stress components - Harvester drive components **General Manufacturing:** - High-strength precision pins - Tool holders for heavy machining - Bearing races for high-load applications - Valve stems for high-pressure systems - Wear plates for abrasive conditions --- #### **9. Fabrication & Processing** **Machining Operations:** - Requires rigid machine setups and premium tooling - Recommended cutting speeds: 20-35 m/min (65-115 ft/min) - Premium carbide tools with positive rake angles essential - High-performance cutting fluids mandatory - Stress relieving strongly recommended after heavy machining **Welding Considerations:** - Pre-heating (200-315°C/400-600°F) mandatory - Low-hydrogen electrodes (E9018, E10018) recommended - Post-weld heat treatment (595-650°C/1100-1200°F) essential - Generally not recommended for critical welded structures **Forming & Bending:** - Very limited cold forming capability - Minimum bend radius: 4-5 times material thickness - Hot forming required for significant deformation - Stress relieving essential after any forming operation --- #### **10. Quality Assurance** - Certified mill test reports including full chemical analysis - Mechanical property certification to ASTM A108 requirements - Dimensional inspection per ASTM A108 Table A1.1 - Surface finish verification to specified Ra values - Straightness tolerance: ≤0.25 mm per 300 mm (≤0.010 in per foot) - Optional NDT testing available (ultrasonic, magnetic particle, dye penetrant) - Hardenability testing available upon request - Standard lengths: 3-6 meters (10-20 feet) --- #### **11. Storage & Handling** - Store in dry, controlled environments (humidity <50%) - Protect bright surfaces with VCI paper or protective coatings - Use proper lifting equipment with spreader bars - Stack on flat, level supports with adequate spacing - Implement FIFO inventory management - Regular inspection for surface corrosion - Maintain inventory records for traceability --- **Critical Application Notes:** 1. **Anisotropic Properties:** Significant directional mechanical properties require design consideration 2. **Stress Concentration:** Critical to minimize sharp transitions and notches in design 3. **Heat Treatment Planning:** Must be integrated into design process from beginning 4. **Weldability:** Limited - consider mechanical fastening or brazing alternatives 5. **Quality Verification:** Extensive testing recommended for all critical applications 6. **Fatigue Design:** Proper surface finish and stress relief are critical 7. **Temperature Considerations:** Properties degrade above 400°C (750°F) --- #### **12. Comparison with Similar Grades** | Grade | Carbon Range | Mn Range | Typical Yield (CD) | Key Distinction | |-------|-------------|----------|-------------------|-----------------| | **AISI 1045** | 0.43-0.50% | 0.60-0.90% | 585-725 MPa | Standard grade | | **AISI 1046** | 0.43-0.50% | 0.70-1.00% | 600-740 MPa | Higher Mn, better hardenability | | **AISI 1049** | 0.46-0.53% | 0.60-0.90% | 620-760 MPa | Higher carbon | | **AISI 1050** | 0.48-0.55% | 0.60-0.90% | 620-760 MPa | Standard higher carbon | --- **Disclaimer:** This technical specification provides general information about AISI 1046 cold drawn steel bars. Actual properties may vary based on manufacturer, drawing parameters, heat treatment, and specific processing history. For engineering design purposes, consult official material specifications (ASTM A108) and conduct appropriate validation testing. Professional engineering judgment should always be applied for safety-critical applications. The combination of higher carbon and manganese content requires special consideration in fabrication, heat treatment, and application design. -:- For detailed product information, please contact sales. -: AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4813 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 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1046 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1046 Steel, 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 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 1284 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