a234 vs a105
ASTM A105
- Material: Forged Carbon Steel.
- Component Type: Primarily for forged components like flanges, fittings, and valves.
- Application: Moderate to high-temperature pressure service.
- Key Feature: Good machinability, weldable with proper procedures.
ASTM A234
- Material: Carbon and Alloy Steel.
- Component Type: Pipe fittings (elbows, reducers, tees).
- Application: Moderate to high-temperature pressure applications, often butt-welded.
- Grades: Includes various grades like WPB (Weldable, Pressure, Grade B), WPC, WP11, WP22, WP91, etc., indicating different alloys or properties.
Main Distinction
- A105 is a material specification for forged products (flanges, blocks).
- A234 is a material specification for fittings (elbows, tees, reducers).
Which to Use?
- Choose A105 for forged components like flanges or threaded fittings.
- Choose A234 (e.g., WPB) for butt-welded fittings like elbows, tees, and reducers in pressure piping systems.
