Stainless Steel 310 Pipe

What is Stainless Steel 310 Pipe?

Stainless Steel 310 Pipe is a medium carbon austenitic grade of stainless steel. The pipes in this range have a chemical composition of 25% chromium and 20% nickel concentration making, them highly resistant to corrosion in stress-induced environments. The heat resistant grade offers excellent tolerances to oxidation under mild cyclic conditions up to 2000 degrees F. These pipes can also withstand cryogenic temperatures and offer excellent toughness at -450 degrees F while exhibiting low magnetic permeability.

Difference Between UNS S31000 ERW Tube and Stainless Steel 310 Seamless Pipe

Seamless and ERW are two processes that are utilized to produce different piping equipment. Both these processes have an array of differentiating factors.

• The production process- An UNS S31000 ERW Tube is manufactured by cold-rolling a metal and then welding it longitudinally. A stainless steel 310 seamless pipe is produced by passing steel billets through a metal extrusion.
• Tolerances- Erw tubes have stricter tolerances and specifications compared to seamless pipes.
• Strength- Seamless pipes possess superior strength and can work at higher pressures in comparison to erw tubes.
• Price- Erw tubes are an economical option compared to the expensive seamless pipes.

DIN 1.4845 Seamless Tube Welding Process

The 310 alloys can be easily fabricated and welded utilizing standard shop fabrication procedures. For seamless DIN 1.4845 Tube gas shielded welding procedures are followed in welding, the component in place. The process utilizes an arc, which acts as a heat source, and gas that is employed to create a protective layer around the arc. The layer isolates the arc from the puddle and prevents any harmful combustion reaction.

ASTM A312 TP310 Welded Pipe Application

Welded pipes are generally utilized in low-pressure and temperature systems. The ASTM A312 tp310 Welded pipe is widely utilized in food processing, furnaces for doors, piping, and cryogenic components. Due to their superior oxidation resistance, these pipes are used in ore processing, petroleum refining, power generation, and thermal process plants. 

SS 310 Pipe vs 310 Stainless Steel Tubing

The names of pipes and tubes are used interchangeably in the pipping industry however, there are some key features that help to differentiate these two components.

• Classification- SS 310 Pipe is classified on its schedules and nominal diameters. A 310 Stainless Steel Tubing is classified and purchased depending on its outer diameter and wall thickness.
• Strength- Tubes are designed with higher strength and tolerances compared to pipes.
• Shape- SS 310 pipes are always round in shape, while tubes can be manufactured in square, round, and rectangular shapes.
• Metal types- SS 310 tubes can be cold and hot rolled but, pipes can only be hot rolled.

SS 310 Tube Characteristics

SS 310 Tubes are versatile components that are utilized in a range of applications. Below listed are some of the characteristics of this grade that set them apart from the rest.

• Oxidation resistance till 2000 degrees F.
• Moderate strength in high-temperatures systems in different environments.
• Resistance to sulfidation at low to moderate carburizing systems. 
• Superior strength and toughness in an array of cryogenic temperatures.
• Low magnetic permeability.