Grey Cast Iron SAE J431 Grade G3500b (UNS F10010)
SAE J431 Grade G3500b is a gray cast iron alloy known for its high carbon content, providing superior strength and wear resistance. Commonly used in heavy-duty automotive and industrial sectors, it delivers reliable performance in demanding environments.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | —— | Remainder |
| Carbon | 3.4% | —— |
| Manganese | 0.6% | 0.9% |
| Phosphorus | —— | 0.15% |
| Silicon | 1.3% | 1.8% |
| Sulfur | —— | 0.12% |
The following table provides a list of SAE J431 Grade G3500b properties in both SI and US customary/Imperial units.
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| Physical Properties | Metric |
|---|---|
| Density | 7150 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | ≥ 241 MPa |
| Brinell Hardness | 207 - 255 |
| Knoop Hardness Converted from Brinell | 257 |
| Vickers Hardness Converted from Brinell | 243 |
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 Iron J431 Grade G3500b
| Advantages | Disadvantages |
|---|---|
| Good wear resistance | Low ductility |
| Good thermal conductivity | Low shock resistance |
| Can be easily machined | Brittle behavior under cyclic loading |
| Susceptible to rust and corrosion |
Applications of Iron J431 Grade G3500b
SAE J431 Grade G3500b is widely utilized across various heavy-duty and automotive industries, offering versatility in applications including:
- Brake components, such as rotors and calipers for automotive and heavy-duty applications.
- Engine components, including diesel engine blocks and cylinder heads.
- Heavy machinery components, such as hydraulic valves and pump housings.
- Gearbox housings and bearing blocks.
- Agricultural equipment components, including tractor engine blocks and transmission cases.