EN-GJL-200 is a grade of gray cast iron that conforms to the European standard EN 1561. Here are some of the key features and properties of EN-GJL-200 gray iron:

1. Composition:

EN-GJL-200 gray iron typically contains approximately 3.6% carbon, 2.5% silicon, 0.6% manganese, and small amounts of sulfur and phosphorus. The exact composition may vary slightly depending on the manufacturer and specific requirements.

2. Microstructure:

The microstructure of EN-GJL-200 gray iron consists of graphite flakes dispersed in a matrix of ferrite and pearlite. This microstructure gives gray iron its characteristic gray color.

3. Strength and Hardness:

EN-GJL-200 gray iron offers good strength and hardness, making it suitable for applications where moderate mechanical properties are required.

4. Damping Capacity:

Gray iron, including EN-GJL-200, has excellent damping capacity, meaning it can effectively absorb and dampen vibrations. This property makes it suitable for components where noise and vibration control are important.

5. Machinability:

EN-GJL-200 gray iron is known for its good machinability. It can be easily machined to achieve precise dimensions and surface finishes.

6. Wear Resistance:

Gray iron, including EN-GJL-200, offers good wear resistance, making it suitable for applications where components are subjected to abrasive wear.

7. Thermal Conductivity:

Gray iron has moderate thermal conductivity, allowing it to transfer heat effectively. This property is beneficial in applications where heat dissipation is important.

8. Corrosion Resistance:

Gray iron is susceptible to corrosion, especially in environments with high moisture and corrosive agents. Proper coatings or surface treatments may be necessary to enhance its corrosion resistance.

9. Applications:

EN-GJL-200 gray iron is commonly used in various applications such as machine frames, housings, automotive components, pump bodies, valve bodies, and other industrial components where its specific properties are beneficial.

It's important to note that the properties of EN-GJL-200 gray iron can be further modified through heat treatment, alloying elements, and casting processes to meet specific engineering requirements for different applications.

Comparing EN-GJL-200 gray iron with other grades of gray cast iron

When comparing EN-GJL-200 gray iron with other grades of gray cast iron, such as EN-GJL-150 and EN-GJL-250, several key differences and similarities can be observed based on their respective compositions, properties, and typical applications:

EN-GJL-200 vs. EN-GJL-150:

1. Composition:

EN-GJL-200 typically has a slightly higher carbon content compared to EN-GJL-150.

2. Strength:

EN-GJL-200 generally offers higher strength and hardness than EN-GJL-150.

3. Applications:

EN-GJL-200 is often used in applications requiring better mechanical properties compared to EN-GJL-150, which is suitable for components with lower strength requirements.

EN-GJL-200 vs. EN-GJL-250:

1. Composition:

EN-GJL-200 and EN-GJL-250 may have similar carbon and silicon contents, but EN-GJL-250 might have slightly higher levels of these elements.

2. Strength:

EN-GJL-250 typically offers higher strength and hardness compared to EN-GJL-200.

3. Applications:

EN-GJL-250 is often chosen for applications that require superior mechanical properties compared to EN-GJL-200, making it suitable for more demanding applications.

Common Features:

1. Microstructure:

All these grades of gray cast iron typically exhibit a microstructure consisting of graphite flakes in a matrix of ferrite and pearlite.

2. Machinability:

Generally, gray cast irons, including these grades, are known for good machinability.

3. Damping Capacity:

They all possess excellent damping capacity, making them suitable for applications requiring vibration control.

Differences:

1. Strength and Hardness:

EN-GJL-200 falls between EN-GJL-150 and EN-GJL-250 in terms of strength and hardness.

2. Applications:

The choice between these grades depends on the specific mechanical properties needed for the intended application.

Considerations:

Cost: Higher strength grades may come at a higher cost.

Application Requirements: Select the grade that best matches the mechanical and physical requirements of the application.

By understanding the differences and similarities between these gray iron grades, you can make informed decisions when selecting the most suitable grade for your specific casting requirements and applications.

Price range of EN-GJL-200 gray iron

Price Range: Approximately $1.50 to $2.50 per pound of EN-GJL-200 gray iron.

The price range of EN-GJL-200 gray iron in China can vary based on factors such as market conditions, supplier pricing, quantity ordered, and other variables. Here is a general price range based on historical data and industry standards for gray iron in China:

Price Range in China: Approximately 6,000 to 10,000 Chinese Yuan per metric ton for EN-GJL-200 gray iron.

Please note that this price range is an estimate and actual prices may vary. To obtain the most accurate and current pricing information for EN-GJL-200 gray iron in China, I recommend reaching out to metal suppliers, foundries, or manufacturers in China for quotes tailored to your specific requirements and order volume. Prices may fluctuate due to factors such as raw material costs, market demand, and economic conditions.