SAE/AISI 8822 Alloy Steel (UNS G88220)
SAE/AISI 8822 is a nickel-chromium-molybdenum alloy steel that is known for its good toughness, hardenability, and fatigue strength. It is a versatile steel that can be used in a variety of applications, including gears, shafts, bolts, and nuts
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 96.675% | 97.80% |
| Carbon | 0.20% | 0.25% |
| Chromium | 0.40% | 0.60% |
| Manganese | 0.75% | 1.0% |
| Molybdenum | 0.30% | 0.40% |
| Nickel | 0.40% | 0.70% |
| Phosphorous | 0.035% | |
| Silicon | 0.15% | 0.30% |
| Sulfur | 0.04% | |
The following table provides a list of SAE/AISI 8822 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 |
| Young’s Modulus (E) | 190 - 210 GPa |
| Bulk Modulus (K) | 140 GPa |
| Poisson’s Ratio (ν) | 0.27 - 0.30 |
| Thermal Properties | Metric |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Electrical Properties | Metric |
| Electrical Conductivity | 4.23×106 S/m |
| Electrical Resistivity | 2.36×10-7 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 8822 Alloy Steel
| Advantages | Disadvantages |
|---|---|
| High strength and toughness | More expensive than some other steels |
| Good machinability | Can be difficult to weld |
| Excellent corrosion resistance | Can be susceptible to hydrogen embrittlement |
Applications of 8822 Alloy Steel
AISI 8822 steel is a high-strength, alloy steel that is used in a variety of applications. Some of the most common applications for AISI 8822 steel include:
- Mining Industry AISI 8822 steel is used to make gears, shafts, and other components for mining equipment. The high strength and toughness of AISI 8822 steel make it ideal for these applications, as they must be able to withstand the harsh conditions found in mines.
- Construction Industry AISI 8822 steel is used to make beams, columns, and other structural components. The high strength and durability of AISI 8822 steel make it ideal for these applications, as they must be able to support heavy loads and withstand the elements.
- Agricultural Industry AISI 8822 steel is used to make parts for tractors, harvesters, and other agricultural equipment. The high strength and toughness of AISI 8822 steel make it ideal for these applications, as they must be able to withstand the wear and tear of everyday use.
- Marine Industry AISI 8822 steel is used to make ships, boats, and other marine vessels. The high strength and corrosion resistance of AISI 8822 steel make it ideal for these applications, as they must be able to withstand the harsh conditions found at sea.
- Aerospace Industry AISI 8822 steel is used to make parts for airplanes, helicopters, and other aircraft. The high strength and lightness of AISI 8822 steel make it ideal for these applications, as they must be able to withstand the high stresses and vibrations found in flight.