EN19 vs. EN353
What's the Difference?
EN19 and EN353 are both high strength low alloy steels that are commonly used in engineering applications. However, EN19 has a higher carbon content and is typically used in applications where higher strength and hardness are required, such as in the manufacturing of gears and shafts. On the other hand, EN353 has a higher nickel content and is often used in applications where toughness and impact resistance are more important, such as in the construction of heavy-duty machinery and equipment. Overall, both steels have their own unique properties and are chosen based on the specific requirements of the application.
Comparison
| Attribute | EN19 | EN353 |
|---|---|---|
| Material Composition | 0.33% Carbon, 0.25% Silicon, 0.75% Manganese, 1.5% Chromium, 0.25% Molybdenum | 0.17% Carbon, 0.25% Silicon, 0.75% Manganese, 1.5% Nickel, 0.25% Molybdenum |
| Hardness | 28-32 HRC | 40-45 HRC |
| Tensile Strength | 850-1000 MPa | 1000-1200 MPa |
| Impact Strength | 20-30 J | 30-40 J |
Further Detail
Introduction
EN19 and EN353 are both popular steel alloys used in various industrial applications. They have distinct properties that make them suitable for different purposes. In this article, we will compare the attributes of EN19 and EN353 to help you understand their differences and choose the right alloy for your specific needs.
Chemical Composition
EN19 is a high-quality alloy steel that contains elements such as carbon, manganese, silicon, chromium, and molybdenum. The carbon content in EN19 is around 0.35-0.45%, while the manganese content is approximately 0.50-0.80%. On the other hand, EN353 is a low-alloy steel with elements like carbon, manganese, silicon, nickel, and chromium. The carbon content in EN353 is lower than EN19, ranging from 0.15-0.25%, while the nickel content is around 1.50-2.00%.
Strength and Hardness
EN19 is known for its high tensile strength and hardness, making it suitable for applications that require heavy-duty performance. The hardness of EN19 steel can reach up to 28-32 HRC (Rockwell Hardness Scale). On the other hand, EN353 offers good toughness and impact resistance, making it ideal for applications where shock loading is a concern. The hardness of EN353 steel is slightly lower than EN19, typically ranging from 20-25 HRC.
Heat Treatment
Both EN19 and EN353 steel alloys can be heat-treated to enhance their mechanical properties. EN19 steel is commonly subjected to processes like quenching and tempering to achieve the desired hardness and strength levels. On the other hand, EN353 steel can be case-hardened to improve its wear resistance and surface hardness. The heat treatment process for EN353 involves carburizing followed by quenching and tempering.
Weldability
EN19 steel has good weldability, allowing it to be easily welded using conventional welding techniques. However, preheating and post-weld heat treatment may be required to prevent cracking and maintain the mechanical properties of the welded joint. EN353, on the other hand, has lower weldability compared to EN19 due to its higher nickel content. Special precautions and welding procedures are necessary to ensure a strong and durable weld when working with EN353 steel.
Corrosion Resistance
EN19 steel offers moderate corrosion resistance due to the presence of chromium in its composition. It can withstand exposure to mild corrosive environments, but prolonged exposure to harsh chemicals or saltwater may lead to corrosion. EN353, on the other hand, has better corrosion resistance than EN19, thanks to its higher nickel content. This makes EN353 more suitable for applications where corrosion resistance is a critical factor.
Applications
EN19 steel is commonly used in the manufacturing of gears, shafts, axles, and other components in the automotive and aerospace industries. Its high strength and hardness make it ideal for applications that require heavy-duty performance under high stress conditions. EN353 steel, on the other hand, is often used in the production of gears, crankshafts, and other components in the marine and oil & gas industries. Its good toughness and impact resistance make it suitable for applications subjected to shock loading.
Conclusion
In conclusion, EN19 and EN353 are two distinct steel alloys with unique properties that cater to different industrial requirements. EN19 offers high strength and hardness, making it suitable for heavy-duty applications, while EN353 provides good toughness and impact resistance, ideal for applications with shock loading. Understanding the differences between these two alloys will help you make an informed decision when selecting the right material for your specific needs.
Comparisons may contain inaccurate information about people, places, or facts. Please report any issues.