SAE/AISI 5135 Alloy Steel (UNS G51350)
SAE/AISI 5135 is a chromium alloy steel that is known for its good hardenability, high strength, and toughness. It is commonly used in a variety of applications, including automotive parts, gears, shafts, and tools.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 97.445% | 98.17% |
| Carbon | 0.33% | 0.38% |
| Chromium | 0.75% | 1.0% |
| Manganese | 0.60% | 0.80% |
| Phosphorous | 0.035% | |
| Silicon | 0.15% | 0.30% |
| Sulfur | 0.04% | |
The following table provides a list of SAE/AISI 5135 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7850 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | 179 - 217 |
| Thermal Properties | Metric |
| Thermal Conductivity | 46.6 W/m·K |
| Specific Heat Capacity (Cp) | 490 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.2×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 4.18×106 S/m |
| Electrical Resistivity | 2.4×10-7 Ω·m |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of 5135 Alloy Steel
| Advantages | Disadvantages |
|---|---|
| High strength and toughness | Moderate weldability |
| Good hardenability | Limited corrosion resistance |
| Excellent fatigue resistance | Not suitable for environments with high temperatures |
| Versatile and widely available | Requires proper heat treatment for optimal performance |
| Suitable for applications requiring wear resistance | Moderate machinability |
| Cost-effective compared to some higher-grade steels | Lower impact toughness compared to some other alloys |
Applications of 5135 Alloy Steel
AISI 5135 steel, with its combination of strength, toughness, and wear resistance, finds applications in various industries. Here are some common applications of 5135 steel:
- Gears and Shafts: AISI 5135 steel is often used in the manufacturing of gears, particularly in applications where high strength and wear resistance are required.
- Fasteners: Due to its excellent strength and toughness properties, 5135 steel is utilized in the production of fasteners such as bolts, screws, and studs.
- Structural Components: AISI 5135 steel can be used for structural parts and components that undergo significant stress, such as axles, crankshafts, and connecting rods.
- Springs: The combination of good strength, toughness, and dimensional stability makes 5135 steel a viable choice for manufacturing mechanical springs.
- General Machine Parts: 5135 steel is employed in the production of various machine parts, including shafts, spindles, levers, and couplings.
- Tool and Die Making: Due to its hardenability and ability to be heat treated, AISI 5135 steel can be used for producing tooling components, dies, and molds.