In the GMAW classification ER70S-6, what does the 'S' represent?

In the GMAW classification ER70S-6, what does the 'S' represent?

• A. Solid
• B. Symbolic
• C. Structure
• D. Semi-solid

Answer: (A)

In the GMAW classification ER70S-6, the 'S' designates the type of filler metal and indicates that it is a solid wire. In the context of welding classes, different letters in the classification denote specific characteristics of the filler metal. The 'E' signifies that it is an electrode, 'R' indicates that it is suitable for use in welding applications, '70' refers to the minimum tensile strength of the weld metal in thousands of psi, and the '6' indicates specific chemical composition requirements. Using 'S' to indicate solid wire is significant because it sets this filler metal apart from other types that might exist, such as tubular wires which could be classified differently. Understanding this classification is crucial for welders to select the appropriate filler metal for specific applications, ensuring the joint strength and welding quality standards are met.

In the GMAW classification ER70S-6, the 'S' designates the type of filler metal and indicates that it is a solid wire. In the context of welding classes, different letters in the classification denote specific characteristics of the filler metal. The 'E' signifies that it is an electrode, 'R' indicates that it is suitable for use in welding applications, '70' refers to the minimum tensile strength of the weld metal in thousands of psi, and the '6' indicates specific chemical composition requirements.

Using 'S' to indicate solid wire is significant because it sets this filler metal apart from other types that might exist, such as tubular wires which could be classified differently. Understanding this classification is crucial for welders to select the appropriate filler metal for specific applications, ensuring the joint strength and welding quality standards are met.