What is the difference between ASTM A106 Grade B and C

It includes several different grades, with Grade B and Grade C being two common options. Here are the key differences between ASTM A106 Grade B and Grade C:
Application:
ASTM A106 Grade B: Grade B is the most commonly used grade and is suitable for high-temperature applications. It is widely used in industries such as power generation, refineries, and process piping where high temperatures and pressures are involved.
ASTM A106 Grade C: Grade C is used less frequently compared to Grade B. It is also designed for high-temperature applications and has similar properties to Grade B, but it is less commonly available and used.
Mechanical Properties:
ASTM A106 Grade B: Grade B has specific mechanical properties, including minimum tensile strength, yield strength, and elongation requirements. These properties are designed to ensure the material can withstand the demands of high-temperature service.
ASTM A106 Grade C: Grade C shares similar mechanical properties with Grade B, as both grades are intended for high-temperature applications. The primary differences between the two grades are related to their chemical composition and manufacturing.
Chemical Composition:
The primary difference between Grade B and Grade C is in their chemical composition. Grade C contains a higher carbon content compared to Grade B. The carbon content for Grade C is usually in the range of 0.35% to 0.40%, while Grade B typically has a carbon content of 0.30% maximum.

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