Various Grade And Function Of Carbon Steel Flanges

The main components or elements that are behind the manufacturing of Carbon steel flanges are iron (Fe) and carbon steel. Flanges are connectors. They have two or more openings that connect pipes to valves, pressure vessels, pumps, etc. The variation in carbon content brings about the existence of multiple grades of Carbon Steel. Every grade has a unique ratio of carbon content and thus has varying properties. The Commonly used grades to make carbon steel flanges are ASTM A105, ASTM A182, ASTM A694, ASTM A516, ASTM A350. The content of carbon present in this array of grads ranges between 1 and 2.1% in weight.

More the carbon content, the sturdier and stronger the flange.

Let’s have a deeper look at the general properties of various grades of Carbon Steel Flanges:

  1. Carbon Steel ASTM A105 Flange:

ASTM A105 Carbon Steel Flanges can be used as valves and fittings in high-pressure transmitting pipelines. Carbon Steel ASTM A105 Flanges can withstand high temperatures. They are made out of forged carbon steel. They have a temperature range of 0 degrees Celsius to 550 degrees Celsius. They are of great use in marine engineering applications. They can be used in power plants, nuclear industries, gas equipment, valves, petrochemical plants, heat exchangers, and the oil and gas industry.

  1. ASTM A350 Carbon Steel Flanges:

Carbon Steel A350 Flanges are popularly in-demand for their superior durability, strength, resistance, and temperature tolerance. On hardening, A350 Flanges provide maximum machinability. The machinability of A350 Carbon Steel Flanges can also be enhanced by forging and normalization processing methods. These flanges are leakage-proof and offer great strength. They are cost-efficient. Compared to flanges made from various austenitic steel, A350 flanges have an upper hand due to the low-cost advantage.

  1. Carbon Steel ASTM A694 Flanges:

This grade of Carbon steel is known to be highly stress-reliant. It is stringent to the flow of extremely high-pressure flow of liquids and gases. This grade of carbon steel becomes heavy as the carbon content in it increases. It is less ductile. If adequate heat treatment is not provided, A695 carbon steel loses its weldability.

Various other Carbon Grades one should know about:

  • ASTM A694, F42, F46, F48, F50, F53, F60, F56, F65, F70.
  • ASTM A350 LF1, LF2, CL1, CL2.
  • ASTM A105N
  • ASTM A516 55, 60, And 70 plate grades.