SAE/AISI 1145 Carbon Steel (UNS G11450)
SAE/AISI 1145 is a medium carbon steel that is commonly used in various industries and applications due to its durability, strength, and corrosion resistance.
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.51% | 98.98% |
| Carbon | 0.42% | 0.50% |
| Manganese | 0.60% | 0.90% |
| Phosphorous | 0.04% | |
| Sulfur | 0.05% | |
The following table provides a list of SAE/AISI 1145 properties in both SI and US customary/Imperial units.
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7700 - 8030 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 585 MPa |
| Tensile Strength (Yield) | 450 MPa |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Shear Modulus (G) | 80 GPa |
| Elongation at Break | 12% |
| Reduction of Area | 35% |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Brinell Hardness | 163 |
| Thermal Properties | Metric |
| Thermal Conductivity | 52 W/m·K |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.2×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 4.1×106 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 1145 Carbon Steel
| Advantage | Disadvantage |
|---|---|
| Strong and durable | Susceptible to rust and corrosion |
| Easy to machine | Not as strong as high-carbon steels |
| Can be heat treated to improve properties | Not as ductile as low-carbon steels |
| Low cost |
Applications of 1145 Carbon Steel
AISI 1145 carbon steel is a versatile material that can be used in various applications where high strength and durability are required, some applications of AISI 1145 carbon steel include:
- Machine parts: 1145 carbon steel is often used in machine parts because it is strong and durable. It can withstand the wear and tear of everyday use, and it is easy to machine. This makes it a good choice for parts that need to be strong and durable, such as gears, shafts, and bearings.
- Tools: 1145 carbon steel is also used in tools because it is strong and durable. It can withstand the wear and tear of everyday use, and it can be sharpened easily. This makes it a good choice for tools that need to be strong and durable, such as wrenches, hammers, and screwdrivers.
- Structural components: 1145 carbon steel can also be used in structural components because it is strong and durable. It can withstand the weight and stress of these applications, and it is easy to weld. This makes it a good choice for structural components that need to be strong and durable, such as bridges and buildings.
- Automotive parts: 1145 carbon steel is used in a variety of automotive parts, such as axles, gears, and crankshafts. It is strong and durable, and it can withstand the wear and tear of everyday use.
- Agricultural equipment: 1145 carbon steel is used in a variety of agricultural equipment, such as plows, harrows, and combines. It is strong and durable, and it can withstand the wear and tear of everyday use.