In the realm of high-performance steel alloys, A514GrT/A514 Grade T stands as a testament to strength, durability, and versatility. Developed for applications requiring exceptional resistance to both high stress and impact loads, this quenched and tempered alloy steel plate offers a unique combination of mechanical properties that set it apart from conventional steel grades. This article delves into the chemical composition, mechanical properties, heat treatment, size capabilities, low-temperature impact resistance, primary applications, and notable supply cases by TJC Steel Group, showcasing the comprehensive advantages of A514GrT/A514 Grade T.

Chemical Composition

The chemical composition of A514GrT/A514 Grade T is meticulously formulated to ensure optimal strength and toughness. Key elements include:

- Carbon (C): ≤ 0.20%

- Silicon (Si): ≤ 0.35%

- Manganese (Mn): 1.2% - 1.7%

- Phosphorus (P): ≤ 0.025%

- Sulfur (S): ≤ 0.005%

In addition, trace amounts of aluminum (Al) and titanium (Ti) are incorporated to enhance corrosion resistance and mechanical properties further. This precise blend of elements enables A514GrT/A514 Grade T to withstand demanding operational conditions.

Mechanical Properties

The mechanical properties of A514GrT/A514 Grade T are remarkable, ensuring exceptional performance in high-stress environments:

- Tensile Strength: 1860-2410 MPa, varying based on delivery condition and processing method

- Yield Strength: 1400-1800 MPa, similarly influenced by delivery and processing

- Elongation: 18%-21%, indicating superior ductility and toughness

- Impact Energy: Over 60J, ensuring high impact resistance even at low temperatures

These properties make A514GrT/A514 Grade T ideal for applications where strength, ductility, and resistance to fatigue and impact are paramount.

Heat Treatment State

A514GrT/A514 Grade T is delivered in the quenched and tempered (Q+T) condition, ensuring optimal mechanical properties and stability. The heat treatment process involves heating the steel to at least 900°C for quenching, followed by tempering at a minimum of 620°C. This meticulous process ensures the steel plate possesses exceptional strength, toughness, and resistance to deformation.

Producible Size Range

TJC Steel Group offers A514GrT/A514 Grade T in a wide range of sizes to meet diverse application requirements:

- Thickness: 8mm - 150mm

- Width: 1500mm - 4200mm

This flexibility allows for seamless integration into various designs and structures.

Low-Temperature Impact Tests

A514GrT/A514 Grade T undergoes rigorous low-temperature impact testing to ensure it maintains its superior properties even in harsh environments. The impact energy value of over 60J indicates that the steel plate retains high impact toughness even at low temperatures, making it suitable for cold climates and extreme conditions.

Primary Applications

The exceptional properties of A514GrT/A514 Grade T make it a popular choice in several industries:

1. Heavy Machinery: Key components of excavators, loaders, and bulldozers rely on A514GrT/A514 Grade T for their strength and durability.

2. Bridge Construction: Used in bridge supports, decks, and other critical structures, it ensures the safety and longevity of bridges under heavy loads and environmental stress.

3. Building Sector: High-rise buildings, stadiums, and convention centers employ A514GrT/A514 Grade T for their load-bearing structures, ensuring structural integrity and stability.

4. Aerospace: Aircraft and rocket components, such as fuselage, wings, and engine mounts, leverage the material's high strength-to-weight ratio and resistance to extreme temperatures.