AISI 1037 Steel Seamless tube,UNS G10370

AISI 1037 Steel Seamless tube, Cold Drawn Bar (UNS G10370) Product Information -:- For detailed product information, please contact sales. -: AISI 1037 Steel Seamless tube, Cold Drawn Bar (UNS G10370) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1037 Steel, Cold Drawn Bar (UNS G10370) Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1037 Steel - Cold Drawn Bar (UNS G10370)** --- #### **1. Product Overview** AISI 1037 (UNS G10370) Cold Drawn Bar is a medium-carbon steel product characterized by an elevated manganese content, processed through cold drawing to enhance its mechanical properties, dimensional accuracy, and surface finish. This manufacturing method involves pulling hot-rolled stock through a die at room temperature, resulting in significant strain hardening. The cold drawn condition provides superior strength, tighter tolerances, and a smooth, scale-free surface compared to its hot-rolled counterpart, making it ideal for precision mechanical components. --- #### **2. Key Characteristics & Advantages** - **Enhanced Mechanical Properties:** Cold working increases yield strength by approximately 25-40% over hot-rolled material - **Superior Dimensional Accuracy:** Maintains tight diameter tolerances (typically ±0.075 mm / ±0.003 in or better) - **Excellent Surface Finish:** Produces a smooth, bright surface (1.6-3.2 µm Ra / 63-125 µin Ra) suitable for bearing applications - **Improved Straightness:** Essential for rotating components and linear motion systems - **Good Hardenability:** Higher manganese content (1.00-1.40%) provides better response to heat treatment than standard 1035 steel - **Predictable Machinability:** Offers consistent machining characteristics in the cold worked condition --- #### **3. Chemical Composition** | Element | Composition Range (%) | Standard Reference | |---------|----------------------|-------------------| | **Carbon (C)** | 0.32 - 0.38 | ASTM A108 / SAE J403 | | **Manganese (Mn)** | 1.00 - 1.40 | 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 elevated manganese range (1.00-1.40%) is the defining characteristic that distinguishes AISI 1037 from standard AISI 1035 steel.* --- #### **4. Typical Mechanical Properties (Cold Drawn Condition)** | Property | Value Range | Test Standard | |----------|-------------|---------------| | **Tensile Strength** | 585 - 725 MPa (85 - 105 ksi) | ASTM A370 | | **Yield Strength (0.2% offset)** | 515 - 620 MPa (75 - 90 ksi) | ASTM A370 | | **Elongation in 50 mm (2")** | 12% - 18% | ASTM A370 | | **Reduction of Area** | 35% - 45% | ASTM A370 | | **Brinell Hardness** | 187 - 241 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) | - | | **Poisson's Ratio** | 0.29 | - | | **Density** | 7.87 g/cm³ (0.284 lb/in³) | - | | **Machinability Rating** | ~50% (relative to 1212 steel) | - | --- #### **5. Physical & Thermal Properties** | Property | Value | |----------|-------| | **Thermal Conductivity** | 50.2 W/m·K (34.8 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** | 0.180 µΩ·m | | **Magnetic Properties** | Ferromagnetic | --- #### **6. International Standard Equivalents** | Standard System | Designation | Primary Specification | |----------------|-------------|----------------------| | **UNS** | G10370 | Unified Numbering System | | **SAE/AISI** | 1037 | SAE J403 | | **ASTM** | Grade 1037 | ASTM A108 (Cold-Finished) | | **EN (Europe)** | - (Closest: 1.1151 C35E) | EN 10083-2 | | **ISO** | - (Closest: C35E) | ISO 683-18 | | **JIS (Japan)** | S35C (Similar) | JIS G4051 | | **GB (China)** | 35Mn (35锰) | GB/T 699 | | **DIN (Germany)** | - (Closest: 1.1151) | DIN 17200 | *Note: Exact international equivalents may vary due to the specific manganese content requirements of AISI 1037.* --- #### **7. Heat Treatment Response** While often used in the cold drawn condition, AISI 1037 responds exceptionally well to heat treatment due to its elevated manganese content: **Heat Treatment Guidelines:** - **Annealing:** Heat to 790-815°C (1450-1500°F), slow cool to restore ductility - **Normalizing:** 870-925°C (1600-1700°F), air cool for grain refinement - **Quenching:** 830-855°C (1525-1575°F), oil quench recommended - **Tempering:** 425-650°C (800-1200°F) to achieve desired strength-toughness balance **Hardenability Advantage:** The higher manganese content provides significantly better hardenability than standard 1035 steel, allowing: - Effective through-hardening of larger cross-sections - More uniform hardness distribution - Better response to surface hardening processes (induction/flame) --- #### **8. Primary Applications** Cold drawn AISI 1037 bars are specified for precision components requiring enhanced strength, good hardenability, and dimensional accuracy: **Automotive & Transportation:** - High-strength axle shafts - Transmission shafts and gears - Steering system components - Suspension linkage parts **Industrial Machinery:** - Pump shafts and motor shafts - Hydraulic piston rods - Spindles for machine tools - High-strength fasteners and studs **Construction & Mining Equipment:** - Drill rods and mining tools - Excavator pin and bushing stock - High-wear components - Heavy equipment shafts **Agricultural Machinery:** - PTO shafts - Implement drive shafts - Cultivator and plow components - Tractor transmission parts **General Manufacturing:** - Precision shafts and pins - Tool holders and fixtures - Bearing races and sleeves - Valve stems and actuator rods --- #### **9. Fabrication & Processing Characteristics** **Machining Operations:** - Good machinability in cold drawn condition with proper tooling - Recommended cutting speeds: 35-50 m/min (115-165 ft/min) for turning - Carbide tools with positive rake angles recommended - Cutting fluids essential for optimal tool life and surface finish - Stress relieving (550-650°C / 1020-1200°F) recommended after heavy machining **Welding Considerations:** - Pre-heating (150-260°C / 300-500°F) required for all welding operations - Low-hydrogen electrodes (E7018, E8018) mandatory - Post-weld heat treatment (595-650°C / 1100-1200°F) strongly recommended - Limited weldability due to carbon content and cold worked structure **Forming & Bending:** - Moderate cold forming capability with proper radii - Minimum bend radius: 2.5-3 times material thickness - Hot forming recommended for complex shapes - Stress relieving advised after severe forming operations --- #### **10. Quality Assurance & Inspection** - 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: ≤0.3 mm per 300 mm (≤0.012 in per foot) - Optional non-destructive testing available (ultrasonic, magnetic particle) - Standard lengths: 3-6 meters (10-20 feet), cut-to-length available --- #### **11. Storage & Handling** - Store in dry, covered areas to prevent corrosion - Protect bright surfaces from physical damage and contamination - Use proper lifting equipment to prevent bending - Stack on flat, level supports with adequate spacing - Implement FIFO (first in, first out) inventory management --- **Critical Application Notes:** 1. **Anisotropic Properties:** Cold drawn bars exhibit directional mechanical properties 2. **Stress Concentration:** Design should minimize sharp transitions and notches 3. **Heat Treatment Planning:** Consider final heat treatment requirements before machining 4. **Weldability Limitations:** Not recommended for welded structures without complete re-heat treatment 5. **Section Size Considerations:** Larger diameters may exhibit property variations from surface to center 6. **Quality Verification:** Always review certified test reports and conduct application-specific testing for critical components --- **Disclaimer:** This technical specification provides general information about AISI 1037 cold drawn steel bars. Actual properties may vary based on manufacturer, drawing parameters, 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 elevated manganese content provides unique advantages but also requires special consideration in fabrication and heat treatment processes. -:- For detailed product information, please contact sales. -: AISI 1037 Steel, Cold Drawn Bar (UNS G10370) Specification Dimensions Size： Diameter 20-1000 mm Length <4796 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 1037 Steel, Cold Drawn Bar (UNS G10370) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1037 Steel Seamless tube, Cold Drawn Bar (UNS G10370) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1037 Steel Seamless tube, Cold Drawn Bar (UNS G10370) -:- For detailed product information, please contact sales. -:

Packing of AISI 1037 Steel Seamless tube, Cold Drawn Bar (UNS G10370) -:- 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 Seamless tube 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 1267 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