AISI 1043 Steel, Hot Rolled,UNS G10430

AISI 1043 Steel, Hot Rolled Bar (UNS G10430) Product Information -:- For detailed product information, please contact sales. -: AISI 1043 Steel, Hot Rolled Bar (UNS G10430) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1043 Steel, Hot Rolled Bar (UNS G10430) Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1043 Steel - Hot Rolled Bar (UNS G10430)** --- #### **1. Product Overview** AISI 1043 (UNS G10430) is a medium-carbon, non-alloy steel supplied in the hot-rolled condition with characteristic mill scale surface. With a carbon content slightly higher than AISI 1042, this grade offers enhanced tensile strength and hardenability while maintaining reasonable ductility and machinability. As a standard carbon steel, it represents a cost-effective material solution for applications requiring good strength and wear resistance, often serving as raw material for subsequent heat treatment, machining, or forging operations. --- #### **2. Key Characteristics** - **Enhanced Strength:** Higher carbon content provides improved tensile and yield strength - **Good Hardenability:** Suitable for through-hardening and surface treatments - **Economical Production:** Hot-rolled condition offers manufacturing cost efficiency - **Versatile Fabrication:** Can be machined, welded, and formed with proper techniques - **Balanced Properties:** Optimal combination of strength, toughness, and manufacturability - **Wide Availability:** Commonly stocked in standard sizes and shapes --- #### **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.40 - 0.47 | SAE J403, ASTM A29 | | **Manganese (Mn)** | 0.70 - 1.00 | 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 manganese content (0.70-1.00%) is typically higher than standard 1042 steel, providing improved hardenability.* --- #### **4. Typical Mechanical Properties (Hot-Rolled Condition)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 590 - 725 MPa (86 - 105 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 430 - 550 MPa (62 - 80 ksi) | ASTM A370 | | **Elongation in 2" (50 mm)** | 15% - 20% | ASTM A370 | | **Reduction of Area** | 40% - 50% | ASTM A370 | | **Brinell Hardness** | 174 - 223 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 | | **Machinability Rating** | ~48% (relative to 1212 steel) | - | --- #### **5. Physical & Thermal Properties** | Property | Value | |----------|-------| | **Density** | 7.87 g/cm³ (0.284 lb/in³) | | **Melting Point** | 1460 - 1510°C (2660 - 2750°F) | | **Thermal Conductivity** | 49.2 W/m·K (34.1 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** | 0.210 µΩ·m | | **Magnetic Properties** | Ferromagnetic | --- #### **6. International Standard Equivalents** | Standard System | Designation | Comparable Specification | |----------------|-------------|--------------------------| | **UNS** | G10430 | Unified Numbering System | | **SAE/AISI** | 1043 | SAE J403 | | **ASTM** | Grade 1043 | ASTM A29, A576 | | **EN (Europe)** | 1.1191 (C42E) - Similar | EN 10083-2 | | **ISO** | C42E - Similar | ISO 683-18 | | **JIS (Japan)** | S45C (Similar) | JIS G4051 | | **GB (China)** | 45# (45钢) | GB/T 699 | | **DIN (Germany)** | 1.1191, Ck42 - Similar | DIN 17200 | *Note: Exact equivalents may vary due to specific manganese content requirements.* --- #### **7. Heat Treatment Response** **Recommended Parameters:** - **Annealing:** 790-815°C (1450-1500°F), slow cool - **Normalizing:** 870-925°C (1600-1700°F), air cool - **Quenching:** 830-855°C (1525-1575°F), oil quench preferred - **Tempering:** 425-650°C (800-1200°F) based on required properties **Typical Heat-Treated Properties:** - **Quenched & Tempered:** Tensile 900-1150 MPa, Hardness 30-42 HRC - **Surface Hardened:** Induction/flame hardening up to 55-60 HRC surface - **Maximum As-Quenched Hardness:** 60-64 HRC **Hardenability Data (Jominy Test Typical):** - 1.5 mm (1/16 in): 58-62 HRC - 10 mm (3/8 in): 35-45 HRC - 20 mm (3/4 in): 25-35 HRC --- #### **8. Primary Applications** **Automotive & Transportation:** - Axle shafts and drive shafts - Transmission gears and components - Crankshafts and connecting rods - Steering system parts - Suspension components **Industrial Machinery:** - Heavy-duty shafts and spindles - Gear blanks and sprockets - Machine tool components - Hydraulic cylinder rods - 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 - Fastener stock for high-strength bolts - Bearing races and sleeves - Valve bodies and stems --- #### **9. Fabrication & Processing** **Machining Operations:** - Good machinability in annealed condition - Recommended cutting speeds: 25-35 m/min (80-115 ft/min) - Carbide tools recommended for production machining - Cutting fluids improve tool life and surface finish - Mill scale removal recommended before precision machining **Welding Procedures:** - 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 - Controlled cooling to prevent cracking - Not recommended for highly stressed welded structures **Forming & Forging:** - Excellent hot working characteristics - Hot working temperature: 1150-1260°C (2100-2300°F) - Moderate cold forming capability - Minimum bend radius: 2-2.5 times thickness - Forging reduction ratio: 3:1 minimum recommended --- #### **10. Quality Assurance** - **Standard Testing:** - Chemical analysis each heat - Mechanical testing each lot - Hardness testing - Dimensional verification - **Optional Testing:** - Hardenability testing (Jominy) - Microstructural examination - Non-destructive testing (UT, MT, PT) - Charpy impact testing - **Certification:** - Mill test reports with full traceability - Compliance with ASTM A29 requirements - ISO 9001 quality system certification --- #### **11. Available Forms & Sizes** - **Rounds:** 10-200 mm (0.375-8 in) diameter - **Squares:** 10-150 mm (0.375-6 in) - **Hexagons:** 10-75 mm (0.375-3 in) - **Flats:** Various thicknesses and widths - **Standard Lengths:** 3-6 meters (10-20 feet) --- #### **12. Storage & Handling** - Store in dry, covered conditions - Stack on level, supported surfaces - Protect from moisture and corrosive environments - Handle with appropriate equipment to prevent damage - Regular inspection for surface condition - First-in-first-out (FIFO) inventory management --- #### **13. Comparison with Similar Grades** | Grade | Carbon Range | Mn Range | Typical Yield Strength | Key Advantage | |-------|-------------|----------|-----------------------|---------------| | **AISI 1040** | 0.37-0.44% | 0.60-0.90% | 415-525 MPa | Standard medium-carbon | | **AISI 1042** | 0.40-0.47% | 0.60-0.90% | 415-525 MPa | Balanced properties | | **AISI 1043** | 0.40-0.47% | 0.70-1.00% | 430-550 MPa | Better hardenability | | **AISI 1045** | 0.43-0.50% | 0.60-0.90% | 450-580 MPa | Higher strength | --- **Important Considerations:** 1. **Heat Treatment:** Essential for optimal performance in demanding applications 2. **Welding:** Requires careful procedure control and post-weld treatment 3. **Machining:** Annealing improves machinability for complex parts 4. **Section Size:** Hardenability decreases with increasing section thickness 5. **Surface Preparation:** Mill scale must be removed for finishing operations 6. **Quality Verification:** Review certified test reports for critical applications --- **Disclaimer:** This technical data sheet provides general information about AISI 1043 hot-rolled steel. Actual properties may vary based on manufacturer, processing parameters, heat treatment, and specific production conditions. For engineering applications, consult official material specifications and conduct appropriate testing. Professional engineering judgment should be applied for safety-critical applications. -:- For detailed product information, please contact sales. -: AISI 1043 Steel, Hot Rolled Bar (UNS G10430) Specification Dimensions Size： Diameter 20-1000 mm Length <4805 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 1043 Steel, Hot Rolled Bar (UNS G10430) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1043 Steel, Hot Rolled Bar (UNS G10430) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1043 Steel, Hot Rolled Bar (UNS G10430) -:- For detailed product information, please contact sales. -:

Packing of AISI 1043 Steel, Hot Rolled Bar (UNS G10430) -:- 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 1276 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