SAE/AISI 8822 Alloy Steel (UNS G88220)
SAE/AISI 8822 is a low-alloy nickel-chromium-molybdenum steel known for its high strength, good toughness, and reliable hardenability. This versatile alloy is well-suited for demanding applications such as gears, shafts, bolts, and nuts in various industrial sectors requiring durability and performance.
Looking to buy steel?
Check pricing and availability through our trusted partner:
| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 96.67% | 97.80% |
| Carbon | 0.20% | 0.25% |
| Chromium | 0.40% | 0.60% |
| Manganese | 0.75% | 1.00% |
| 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 button 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
SAE/AISI 8822 is widely used across multiple industries due to its exceptional strength, toughness, and wear resistance, including:
- Mining Industry Used to make gears, shafts, and other components for mining equipment. The high strength and toughness make it ideal for enduring harsh underground conditions.
- Construction Industry Used in the production of beams, columns, and structural components. Its strength and durability support heavy loads and resist environmental stress.
- Agricultural Industry Commonly used for parts in tractors, harvesters, and other machinery. It withstands significant wear and tear from daily field operations.
- Marine Industry Applied in the construction of ships, boats, and related components. Its corrosion resistance and strength support performance in marine environments.
- Aerospace Industry Utilized in parts for airplanes, helicopters, and other aircraft. Its high strength-to-weight ratio meets the demands of aerospace performance and safety.