What is ASTM A514 Grade E Steel Plate?

What is ASTM A514 Grade E Steel Plate? Applications and Strength

ASTM A514 Grade E is a high-yield-strength, quenched and tempered alloy steel plate specified under the ASTM A514/A514M standard. It is designed for structural applications that demand exceptional strength, toughness, and resistance to impact and abrasion while maintaining good weldability. With a minimum yield strength of 100 ksi (690 MPa) for thicknesses up to 2-1/2 inches and 90 ksi (620 MPa) for thicker plates up to 8 inches, Grade E stands out for its ability to handle heavy loads in challenging environments. As a leading manufacturer and exporter, Gangsteel offers premium astm a514 grade e plates, alongside other variants like astm a514 grade b and astm a514 grade q, ensuring compliance with international standards for global projects.

Overview of ASTM A514 Grade E Steel Plate

Grade E is part of the A514 family, which includes multiple grades optimized for different thickness ranges and performance needs. It features a higher chromium content compared to some other grades, enhancing its corrosion resistance and suitability for abrasive conditions. This plate is commonly produced in thicknesses from 3/16" to 8", making it versatile for both thin and thick structural components. Unlike standard carbon steels, A514 Grade E undergoes specific heat treatment to achieve its superior mechanical properties, allowing for lighter designs without sacrificing durability. Gangsteel's ASTM A514/A514M steel plate production includes Grade E for applications requiring enhanced impact toughness, similar to astm a514 grade f but with distinct alloying for broader use.

Chemical Composition of ASTM A514 Grade E

The chemical composition of Grade E is tailored to provide high strength and resistance to wear, with elements like chromium and molybdenum playing key roles. Below is a table of the typical chemical requirements (in weight %, heat analysis) based on ASTM specifications:

Note: Dashes indicate no specified requirement. For comparison, grades like astm a514 grade h have lower chromium, while Grade E's composition supports its use in corrosive or high-impact settings. Gangsteel ensures precise control in manufacturing to meet these standards.

Mechanical Properties and Strength of ASTM A514 Grade E

Grade E exhibits robust mechanical properties, with strength levels that make it ideal for high-stress applications. Its quenched and tempered state provides excellent hardness and ductility. The table below outlines key mechanical properties, which vary by thickness:

These values highlight Grade E's superior strength compared to milder steels, with a focus on maintaining toughness in thicker sections. For instance, it outperforms astm a514 grade a in impact resistance due to its alloying. Additional properties include good fatigue strength and a modulus of elasticity around 190 GPa.

Heat Treatment and Processing for ASTM A514 Grade E

To achieve its high strength, ASTM A514 Grade E must be quenched and tempered per the A514/A514M standard. This involves heating to approximately 1650°F (900°C), followed by rapid quenching and tempering at 1100-1300°F (600-700°C) to optimize toughness and reduce brittleness. The process enhances machinability (rating around 0.7) and weldability, though preheating to 300-500°F is recommended for welding to avoid hydrogen cracking. Gangsteel's advanced facilities ensure consistent heat treatment for astm a514 grade e, with mill test reports verifying properties. This makes it comparable to grades like astm a514 grade p in processing ease.

Applications of ASTM A514 Grade E Steel Plate

Due to its high strength and toughness, ASTM A514 Grade E is widely used in industries requiring durable, weldable materials. Common applications include:

• Construction and structural engineering, such as welded bridges and high-rise buildings where weight reduction is critical.
• Heavy machinery and equipment, including cranes, booms, and mobile lifts for enhanced load-bearing capacity.
• Mining and earthmoving operations, for components like bucket edges, scraper blades, and wear plates resisting abrasion.
• Offshore and marine structures, leveraging its corrosion resistance from chromium alloying.
• Transportation, in truck frames and trailers for improved fuel efficiency through lighter designs.

Grade E's versatility extends to military and pressure vessel applications when meeting supplementary requirements. For similar uses, consider astm a514 grade s or astm a514 grade t. Gangsteel's exported plates support these sectors with customized sizes and certifications.

FAQ: Common Questions About ASTM A514 Grade E Steel Plate

• What is the difference between ASTM A514 Grade E and Grade B? Grade E has higher chromium content (1.40-2.00%) for better corrosion and impact resistance, while Grade B focuses on balanced weldability with lower alloying. Grade E is available in thicker plates up to 8", compared to Grade B's typical limit of 1-1/4".
• What is the hardness range for ASTM A514 Grade E?It typically falls between 235-293 Brinell (HBW), providing excellent wear resistance without excessive brittleness.
• Can ASTM A514 Grade E be welded?Yes, it has good weldability, but proper procedures like preheating and low-hydrogen electrodes are essential to prevent cracking.
• What is the maximum thickness for ASTM A514 Grade E?Up to 8 inches, with yield strength adjusting to 90 ksi for thicknesses over 2-1/2 inches.
• Where can I buy ASTM A514 Grade E plates?Gangsteel, as a manufacturer and exporter, offers high-quality plates with global shipping; contact us for quotes on astm a514 grade e.