EN19T 0708M40T is a high-quality alloy steel with good tensile strength, toughness, and weldability. It is often used in applications where strength and durability are important, such as in the construction of machinery, tools, and components.

The EN19T designation stands for:

• EN: European Norm
• 19: The grade of steel
• T: Thermomechanically treated
• 0708: Chemical composition (0.7% carbon, 0.8% manganese)
• M40: Mechanical properties (minimum tensile strength of 400 MPa)

The equivalent grades of EN19T 0708M40T are AISI 4140 and DIN 1.7225/42crmo4.

Here are some of the properties of EN19T 0708M40T:

• Tensile strength: 400-550 MPa
• Yield strength: 275-350 MPa
• Elongation: 15-20%
• Hardness: 250-300 HB
• Toughness: Charpy V-notch impact energy of 27-33 J at -40°C
• Weldability: Good

EN19T 0708M40T is a versatile steel that can be used in a wide variety of applications. It is commonly used in the following applications:

• Construction machinery
• Tools and dies
• Automotive components
• Gears and bearings
• Springs
• Pressure vessels
• Structural steel

If you are looking for a high-quality alloy steel with good strength, toughness, and weldability, EN19T 0708M40T is a good option to consider.