Grey Cast Iron SAE J431 Grade G3500c (UNS F10011)
SAE J431 Grade G3500c is a durable gray cast iron alloy valued for its strength, toughness, and machinability. It is commonly utilized in demanding applications such as diesel engine blocks, heavy flywheels, tractor transmission cases, and gearboxes, where high mechanical performance and thermal conductivity are essential.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | —— | Remainder |
| Carbon | 3.5% | —— |
| 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 G3500c 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 G3500c
| Advantages | Disadvantages |
|---|---|
| Good strength and toughness | Susceptible to corrosion |
| Good machinability | Brittle at low temperatures |
| Good thermal conductivity | Not as strong as other types of cast iron |
| Low cost |
Applications of Iron J431 Grade G3500c
SAE J431 Grade G3500c is a a versatile and economical type of gray cast iron that is used in a variety of applications, including:
- Diesel engine blocks: Its high strength and toughness make it ideal for components subjected to extreme stresses and temperatures.
- Truck and tractor cylinder blocks and heads: Excellent machinability allows for precise shaping of cylinder bores and combustion chambers.
- Heavy flywheels: Provides the durability required to withstand high loads and shock.
- Tractor transmission cases: Combines machinability and thermal conductivity to endure high temperatures and tight tolerances.
- Heavy gear boxes: Offers strength and toughness necessary for parts exposed to substantial loads and shock.