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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI 5160 is a medium-carbon, low-alloy steel with chromium as the primary alloying element. The chromium content enhances hardenability, wear resistance, and corrosion resistance while maintaining excellent spring properties. The steel exhibits a predominantly pearlitic microstructure in the annealed condition, transforming to tempered martensite after proper heat treatment.
Heat Treatment Process
MetalZenith employs precise heat treatment protocols for AISI 5160: Austenitizing at 845-870°C, followed by oil quenching to achieve full hardness (58-62 HRC). Tempering is performed at 400-540°C depending on desired hardness and spring properties. Our controlled atmosphere furnaces ensure uniform heating and prevent decarburization.
Manufacturing Excellence
Our production process begins with electric arc furnace melting using premium scrap and alloy additions. Secondary refining through ladle metallurgy ensures precise chemistry control and inclusion modification. Hot rolling is performed using computer-controlled mills with optimized reduction schedules to achieve desired mechanical properties and surface quality.
Quality Standards & Testing
MetalZenith maintains strict adherence to ASTM A29, SAE J403, and ISO 683-1 standards. Comprehensive testing includes chemical analysis via optical emission spectroscopy, mechanical testing per ASTM E8, hardness verification, microstructure examination, and dimensional inspection. Spring deflection testing and fatigue analysis ensure optimal performance characteristics.
Applications Engineering
AISI 5160's exceptional elastic limit and fatigue resistance make it ideal for automotive leaf springs, agricultural equipment, hand tools, and industrial machinery components. The steel's ability to maintain spring properties at elevated temperatures extends its application range to demanding environments requiring reliable performance under cyclic loading conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.56 - 0.64 |
| Manganese (Mn) | 0.75 - 1.00 |
| Silicon (Si) | 0.15 - 0.30 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Chromium (Cr) | 0.70 - 0.90 |
| Nickel (Ni) | ≤ 0.25 |
| Molybdenum (Mo) | ≤ 0.06 |
| Copper (Cu) | ≤ 0.35 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength | 1380 - 1720 MPa | Hardened & Tempered |
| Yield Strength (0.2% offset) | 1240 - 1550 MPa | Hardened & Tempered |
| Elongation | 8 - 12% | Hardened & Tempered |
| Reduction of Area | 35 - 45% | Hardened & Tempered |
| Hardness (HRC) | 42 - 50 | Hardened & Tempered |
| Impact Energy (Charpy V-notch) | 15 - 25 J | Room Temperature |
| Fatigue Limit (10&sup7; cycles) | 620 - 760 MPa | Rotating Bending |
| Elastic Modulus | 210 GPa | Room Temperature |
| Poisson's Ratio | 0.27 - 0.30 | Room Temperature |
🔬 Physical Properties
| Property | Value | Temperature |
|---|---|---|
| Density | 7.85 g/cm³ | 20°C |
| Melting Point | 1480 - 1520°C | - |
| Thermal Conductivity | 42 W/m·K | 20°C |
| Thermal Expansion Coefficient | 11.5×10-6/K | 20-100°C |
| Specific Heat Capacity | 460 J/kg·K | 20°C |
| Electrical Resistivity | 0.25 µΩ·m | 20°C |
| Magnetic Permeability | Ferromagnetic | 20°C |
| Curie Temperature | 770°C | - |
| Thermal Diffusivity | 11.6 mm²/s | 20°C |
📏 Product Specifications
| Specification | Available Options | Standards |
|---|---|---|
| Product Forms | Round bars, flat bars, sheets, strips, wire | ASTM A29, SAE J403 |
| Round Bar Diameter | 6mm - 300mm | ASTM A29 |
| Flat Bar Dimensions | 3mm - 100mm thickness, up to 300mm width | ASTM A29 |
| Sheet Thickness | 0.5mm - 25mm | ASTM A684 |
| Strip Thickness | 0.1mm - 6mm | ASTM A684 |
| Wire Diameter | 0.5mm - 12mm | ASTM A228 |
| Surface Finish | Hot rolled, cold drawn, peeled, ground | Customer specification |
| Heat Treatment | Annealed, normalized, hardened & tempered | ASTM A29 |
| Dimensional Tolerance | ±0.1mm to ±0.5mm | ASTM A29 |
| Length | Up to 12 meters or cut to length | Customer specification |
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Our Advantages in Processing AISI 5160
Advanced Heat Treatment Technology
MetalZenith employs precision-controlled atmosphere furnaces and automated quenching systems to achieve optimal hardness uniformity and microstructure refinement in AISI 5160, ensuring consistent spring properties and enhanced fatigue life across all product forms.
Comprehensive Quality Control Systems
Our integrated quality management includes real-time chemical composition monitoring, automated mechanical testing, and advanced metallographic analysis. Every batch undergoes rigorous spring deflection testing and fatigue cycle verification to guarantee performance reliability.
Flexible Customization & Global Supply
MetalZenith offers extensive customization options including precision cutting, heat treatment to customer specifications, and specialized surface finishes. Our global distribution network ensures reliable delivery worldwide with comprehensive technical support and engineering consultation services.
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