AISI 1042 Steel, Normalized Cold Drawn,UNS G10420

AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) Product Information -:- For detailed product information, please contact sales. -: AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1042 Normalized Cold Drawn Steel Bar (UNS G10420)** --- #### **1. Product Overview** AISI 1042 Normalized Cold Drawn Bar represents a premium-processed medium-carbon steel product that combines the dimensional precision of cold drawing with the microstructural benefits of normalizing heat treatment. This dual-processing approach delivers superior dimensional accuracy, enhanced mechanical consistency, and optimal machinability. The normalized condition provides uniform grain structure throughout the cross-section, eliminating the directional properties and residual stresses associated with standard cold drawn material, while maintaining excellent surface finish and tight tolerances. --- #### **2. Key Characteristics & Advantages** - **Superior Dimensional Accuracy:** Cold drawing provides tight tolerances (±0.05 mm typical) - **Uniform Mechanical Properties:** Normalizing eliminates anisotropic behavior - **Enhanced Machinability:** Fine-grained normalized structure improves cutting performance - **Stress-Free Condition:** Eliminates residual stresses from cold working - **Consistent Hardness Distribution:** Uniform microstructure ensures predictable performance - **Improved Fatigue Resistance:** Refined grain structure enhances cyclic loading capability - **Ready for Further Processing:** Ideal base material for heat treatment or precision machining --- #### **3. Chemical Composition** | Element | Composition (% weight) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.40 - 0.47 | 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: Composition may be adjusted within specified ranges to optimize normalized properties.* --- #### **4. Manufacturing Process** 1. **Hot Rolling:** Initial forming to approximate dimensions 2. **Cold Drawing:** Precision sizing and surface improvement 3. **Normalizing:** Heat to 870-925°C (1600-1700°F), air cool 4. **Optional Stress Relieving:** 595-650°C (1100-1200°F) if required 5. **Final Inspection:** Dimensional and quality verification --- #### **5. Typical Mechanical Properties** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 590 - 740 MPa (86 - 107 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 380 - 520 MPa (55 - 75 ksi) | ASTM A370 | | **Elongation in 50mm (2")** | 18% - 24% | ASTM A370 | | **Reduction of Area** | 45% - 55% | ASTM A370 | | **Brinell Hardness** | 170 - 217 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 | | **Impact Strength (Charpy V-notch)** | 40 - 60 J (30 - 44 ft-lb) | ASTM A370 | | **Machinability Rating** | ~65% (relative to 1212 steel) | - | --- #### **6. Physical & Thermal Properties** | Property | Value | |----------|-------| | **Density** | 7.87 g/cm³ (0.284 lb/in³) | | **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 | --- #### **7. Microstructural Characteristics** - **Grain Size:** ASTM 7-9 (fine-grained) - **Microstructure:** Fine pearlite with ferrite network - **Decarburization:** ≤ 0.25 mm (0.010 in) maximum depth - **Inclusion Rating:** ASTM E45 Method A, ≤ 2.0 thin series --- #### **8. International Standard Equivalents** | Standard System | Designation | Primary Specification | |----------------|-------------|----------------------| | **UNS** | G10420 | Unified Numbering System | | **SAE/AISI** | 1042 | SAE J403 | | **ASTM** | Grade 1042 | ASTM A108 (with special processing) | | **EN (Europe)** | 1.1191 (C42E) | EN 10083-2 | | **ISO** | C42E | ISO 683-18 | | **JIS (Japan)** | S45C (Similar) | JIS G4051 | | **GB (China)** | 45# | GB/T 699 | | **DIN (Germany)** | 1.1191, Ck42 | DIN 17200 | --- #### **9. Heat Treatment Response (Post-Normalizing)** **Further Heat Treatment Options:** - **Annealing:** 790-815°C (1450-1500°F), slow cool for maximum softness - **Quenching & Tempering:** Excellent response due to uniform microstructure - Austenitizing: 830-855°C (1525-1575°F) - Quenching: Oil preferred - Tempering: 425-650°C (800-1200°F) - **Surface Hardening:** Ideal for induction or flame hardening processes - **Case Hardening:** Suitable for carburizing or carbonitriding **Typical Heat-Treated Properties:** - **Quenched & Tempered:** Tensile 850-1100 MPa, Hardness 28-40 HRC - **Induction Hardened:** Surface hardness 55-60 HRC, case depth adjustable --- #### **10. Primary Applications** **Precision Automotive Components:** - Transmission shafts and gears - Steering system components - Engine valve components - Fuel injection parts **Industrial Machinery:** - High-precision shafts and spindles - Machine tool components - Hydraulic system parts - Pump shafts and impellers **Aerospace & Defense:** - Landing gear components - Actuator shafts - Control system parts - Precision fasteners **Medical Equipment:** - Surgical instrument components - Diagnostic equipment parts - Dental tool components - Implant manufacturing tooling **General Precision Engineering:** - Measurement equipment components - Optical instrument parts - Robotics components - Bearing races and sleeves --- #### **11. Fabrication & Processing** **Machining Characteristics:** - Excellent machinability with consistent chip formation - Recommended cutting speeds: 40-60 m/min (130-200 ft/min) - Surface finishes < 1.6 µm Ra easily achievable - Minimal tool wear and consistent dimensional control - Suitable for high-volume precision machining **Welding Procedures:** - Pre-heating: 150-260°C (300-500°F) recommended - Electrodes: Low-hydrogen (E7018, E8018) - Post-weld heat treatment: 595-650°C (1100-1200°F) - Excellent weldability compared to standard cold drawn material **Finishing Operations:** - Grinding: Excellent response with predictable stock removal - Polishing: Superior surface finish achievable - Plating: Excellent substrate for nickel, chrome, or zinc plating - Coating: Superior adhesion for paints and polymer coatings --- #### **12. Quality Assurance & Inspection** - **Dimensional Tolerances:** - Diameter: ±0.05 mm (±0.002 in) - Straightness: ≤ 0.1 mm per 300 mm (≤ 0.004 in per foot) - Roundness: ≤ 0.03 mm (≤ 0.001 in) - **Testing Requirements:** - Full chemical analysis each heat - Mechanical testing each lot - Microstructural examination - Hardness testing multiple locations - Surface finish verification - Non-destructive testing available - **Certification:** - Mill test reports with complete traceability - Normalizing process certification - Heat treatment charts available - ISO 9001 / IATF 16949 compliant --- #### **13. Storage & Handling** - Store in controlled environment (20-25°C, <50% RH) - Protect surfaces with anti-corrosive packaging - Use proper lifting equipment to prevent bending - Stack on flat, level supports with adequate protection - Shelf life: 12 months in proper storage conditions --- #### **14. Comparative Advantages** | Property | Standard Cold Drawn | Normalized Cold Drawn | |----------|-------------------|----------------------| | **Dimensional Accuracy** | Excellent | Excellent | | **Mechanical Uniformity** | Directional | Isotropic | | **Machinability** | Good | Excellent | | **Residual Stress** | High | Minimal | | **Grain Structure** | Elongated | Fine, uniform | | **Fatigue Resistance** | Moderate | Excellent | | **Cost** | Lower | 15-25% higher | --- **Critical Application Notes:** 1. **Design Benefits:** Ideal for components requiring minimal distortion during machining 2. **Quality Consistency:** Reduced scrap rates in precision manufacturing 3. **Heat Treatment:** Provides uniform response to subsequent thermal processing 4. **Performance:** Enhanced fatigue life and reliability 5. **Cost Efficiency:** Reduces secondary processing requirements 6. **Quality Documentation:** Comprehensive traceability available --- **Disclaimer:** This technical specification provides detailed information about AISI 1042 Normalized Cold Drawn Steel Bars. Properties may vary based on specific manufacturing parameters and section sizes. For critical applications, consult with material engineers and conduct application-specific testing. This material represents a premium grade suitable for demanding applications where consistency and reliability are paramount. -:- For detailed product information, please contact sales. -: AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) Specification Dimensions Size： Diameter 20-1000 mm Length <4804 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 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) -:- For detailed product information, please contact sales. -:

Packing of AISI 1042 Steel, Normalized Cold Drawn Bar (UNS G10420) -:- 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 1275 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