EN-GJL-250 is a commonly used grade of gray cast iron that offers a balance of properties suitable for a wide range of applications. Here are some of the key features and characteristics of EN-GJL-250 grade gray cast iron:

1. Composition: EN-GJL-250 is a standard grade of gray cast iron defined by its chemical composition, which typically includes:

Carbon (C): 2.7 - 3.6%

Silicon (Si): 1.8 - 2.8%

Manganese (Mn): 0.3 - 0.8%

Phosphorus (P): 0.15% max

Sulfur (S): 0.12% max

2. Strength and Hardness:

EN-GJL-250 offers good strength and hardness properties, making it suitable for applications requiring moderate strength and wear resistance.

3. Machinability:

This grade of gray cast iron has good machinability, allowing for ease of machining operations such as drilling, milling, and turning.

4. Damping Capacity:

Gray cast iron, including EN-GJL-250, exhibits excellent damping capacity, which makes it suitable for applications where vibration and noise reduction are important.

5. Wear Resistance:

EN-GJL-250 provides moderate wear resistance, making it suitable for components subjected to moderate levels of wear and abrasion.

6. Thermal Conductivity:

Gray cast iron has good thermal conductivity, allowing for efficient heat transfer. This property is beneficial in applications where thermal management is important.

7. Corrosion Resistance:

While gray cast iron is susceptible to corrosion compared to other materials like stainless steel, coatings or surface treatments can be applied to enhance its corrosion resistance.

8. Versatility:

EN-GJL-250 gray cast iron is versatile and finds applications in various industries, including automotive, machinery, construction, and infrastructure.

9. Cost-Effective:

Gray cast iron is generally cost-effective compared to other materials, making it a preferred choice for applications where a balance of properties and cost-effectiveness is desired.

10. Standardization:

EN-GJL-250 complies with international standards and specifications, ensuring consistency and quality in its properties and performance.

These features collectively make EN-GJL-250 grade gray cast iron a popular material choice for a wide range of applications where its specific properties and characteristics are well-suited.

Comparing EN-GJL-250 gray iron with other grades of gray cast iron

Gray cast iron is a versatile material used in various industries due to its good machinability, damping capacity, and cost-effectiveness. When comparing EN-GJL-250 gray iron with other grades of gray cast iron, such as EN-GJL-150 and EN-GJL-300, several differences and similarities can be noted:

EN-GJL-250 vs. EN-GJL-150:

1. Strength and Hardness:

EN-GJL-250 typically has higher strength and hardness compared to EN-GJL-150, making it more suitable for applications requiring increased mechanical properties.

2. Impact Resistance:

EN-GJL-250 generally offers better impact resistance than EN-GJL-150 due to its higher carbon content and improved strength.

3. Wear Resistance:

EN-GJL-250 provides better wear resistance than EN-GJL-150, making it more suitable for components subject to moderate wear and abrasion.

4. Cost:

EN-GJL-250 may be slightly more expensive than EN-GJL-150 due to its higher strength and improved mechanical properties.

EN-GJL-250 vs. EN-GJL-300:

1. Strength and Hardness:

EN-GJL-300 typically has higher strength and hardness compared to EN-GJL-250, making it suitable for applications requiring even greater mechanical properties.

2. Machinability:

EN-GJL-250 may offer better machinability compared to EN-GJL-300 due to its lower graphite content, which can affect the ease of machining.

3. Wear Resistance:

EN-GJL-300 may provide better wear resistance than EN-GJL-250 due to its higher strength and hardness, making it suitable for applications with higher wear requirements.

4. Cost:

EN-GJL-300 is likely to be more expensive than EN-GJL-250 due to its superior mechanical properties and increased strength.

Common Features of EN-GJL-250, EN-GJL-150, and EN-GJL-300:

1. Machinability:

All three grades of gray cast iron exhibit good machinability, allowing for ease of machining operations.

2. Damping Capacity:

They all have excellent damping capacity, making them suitable for applications where vibration and noise reduction are desired.

3. Corrosion Resistance:

Gray cast iron grades generally have limited corrosion resistance and may require coatings or surface treatments to enhance protection against corrosion.

4. Thermal Conductivity:

They all exhibit good thermal conductivity, facilitating efficient heat transfer in applications where thermal management is important.

When choosing between these gray cast iron grades, considerations such as the specific mechanical properties required for the application, cost constraints, and machining characteristics should be taken into account to select the most suitable grade for the intended use.

Price range OF EN-GJL-250 GRADE GRAY CAST IRON

The price range of EN-GJL-250 grade gray cast iron can vary depending on various factors such as market conditions, supplier pricing, order quantity, geographic location, and additional processing or finishing requirements.

1. Bulk Purchases: When purchasing EN-GJL-250 grade gray cast iron in bulk quantities, the price is typically lower per unit compared to smaller orders. Bulk purchases often result in volume discounts.

2. Market Conditions: Fluctuations in raw material costs, demand-supply dynamics, and economic factors can influence the price of gray cast iron, including EN-GJL-250.

3. Quality and Specifications: Price variations can also occur based on the quality standards met, the manufacturing process, and any additional certifications or specifications required for the cast iron.

4. Finishing and Processing: Additional processes such as heat treatment, machining, surface finishing, or coatings may incur extra costs, affecting the overall price of the final product.

5. Supplier Variation: Prices can differ among suppliers based on factors like production costs, overheads, location, and supplier-specific pricing strategies.

6. Currency Fluctuations: For international transactions, currency exchange rates can impact the cost of importing EN-GJL-250 grade gray cast iron.

Some general indicative price examples for EN-GJL-250 grade gray cast iron based on historical trends.

1. Price Range per Kilogram (in USD):

Bulk Orders: $1.50 - $2.50 per kg

Smaller Orders: $2.00 - $3.00 per kg

2. Price Range per Pound (in USD):

Bulk Orders: $0.70 - $1.10 per lb

Smaller Orders: $0.90 - $1.30 per lb

3. Price Range for Cast Iron Components:

Simple Components: $10 - $50 per piece

Complex Components: $50 - $200+ per piece

4. Price Range for Machined Parts:

Machining Costs: Additional $5 - $50 per part (depending on complexity)

Total Cost: Cast iron price per kg + machining costs

5. Price Variation Factors:

Quality Standards: Higher-quality EN-GJL-250 may come at a premium.

Processing: Additional processing like heat treatment or surface finishing can increase costs.

Geographic Location: Prices may vary regionally due to shipping costs and local market conditions.

Order Quantity: Bulk discounts are common for larger orders.

These price ranges are meant to provide a general idea of the cost of EN-GJL-250 grade gray cast iron and may not reflect current market prices. For precise pricing information, it's best to contact suppliers, foundries, or distributors for quotes based on your specific requirements.