What is grade grey cast iron?

What is grade grey cast iron?

Gray iron, or grey cast iron, is a type of cast iron that has a graphitic microstructure. It is named after the gray color of the fracture it forms, which is due to the presence of graphite. It is the most common cast iron and the most widely used cast material based on weight.

What is the hardest that grey cast iron can be?

gray irons are equally strong, or equally hard. As in steel, tensile strength and hardness are closely related. In gray irons, tensile strength ranges from about 14 MPa (20,000 psi) to more than 35 MPa (50,000 psi). The hardness of the strongest grades is double that of the weakest grades.

Is grey cast iron cheap?

The popularity of grey cast iron components (gray iron castings) is because grey iron is one of the cheapest types of iron castings to produce.

What is the difference between cast iron and grey iron?

The difference is that white cast iron features cementite below its surface, whereas gray cast iron features graphite below its surface. The graphite creates the appearance of a gray color, while the cementite creates the appearance of a white color.

Is grey cast iron brittle?

Unfortunately the only commonly known property of gray iron—brittleness—is also assigned to “cast iron” and hence to all cast irons. Gray iron is so named because its fracture has a gray appearance. It contains carbon in the form of flake graphite in a matrix that consists of ferrite, pearlite, or a mixture of the two.

What are the four types of cast iron?

The 4 Types of Cast Iron

• Grey Cast Iron.
• White Cast Iron.
• Ductile Cast Iron.
• Malleable Cast Iron.

What is the difference between cast iron and grey cast iron?

How do you identify grey cast iron?

Gray cast iron is characterized by its flaky appearance and a gray color created by the graphite inside of its make-up. Gray cast iron’s properties will change depending on what materials are combined when they’re melted together.