Welding till the End!
Carbon equivalent (CE) is a measure of the weldability of a material, particularly in relation to the heat affected zone (HAZ) during welding. It is a calculation that takes into account the carbon content, as well as other alloying elements that can affect the behavior of the material during welding, such as manganese, silicon, and …
ASTM G48 is a standard test method that measures the resistance of austenitic stainless steel to pitting corrosion. The test method is used to evaluate the pitting corrosion resistance of materials in environments containing chloride ions. The ASTM G48 test involves exposing a sample of the material to a solution of ferric chloride (FeCl3) at …
IGC testing A262 Practice E refers to a standard test method used to evaluate the intergranular corrosion (IGC) resistance of stainless steel and high-alloy materials. This test method, described in Practice E of ASTM International standard A262, involves immersing specimens of the material in a solution of nitric acid and ferric nitrate.
Dilution is a term used in welding to describe the mixing of the base metal and filler metal during the welding process. In overlay welding, dilution refers to the extent to which the filler metal is mixed with the base metal.
Why PWHT Not Required in SS Post Weld Heat Treatment (PWHT) is typically not required in stainless steel. This is because stainless steel has a different microstructure compared to carbon steel, which makes it less susceptible to cracking and hydrogen induced cracking during welding. Additionally, stainless steel has a higher resistance to corrosion, which means …
Role of Delta Ferrite in Stainless Steel Welding
Delta ferrite is a type of ferrite, a crystalline structure that forms during the solidification of some metals and alloys, including stainless steel. The presence of delta ferrite in a welded joint of stainless steel is important because it affects the mechanical properties and corrosion resistance of the welded joint.
Ni Restriction in Sour Service Nickel (Ni) is restricted to a maximum of 1% in sour service due to its tendency to form brittle intermetallics with other metals in the presence of hydrogen sulfide (H2S). This phenomenon is particularly concerning in sour service applications, where H2S is present in high concentrations and can cause corrosion …
Why Ni is restricted up to 1% max. for sour service? Read More »
“Sour service” refers to a term used in the oil and gas industry to describe the conditions of a pipeline or well environment that contains hydrogen sulfide (H2S), a toxic and corrosive gas. Sour service can also refer to other corrosive environments that contain high levels of sulfur compounds. These conditions can pose a significant …
Weight = Volume x Material DensityOD = Outside Diameter of PipeID = Inside Diameter of PipeID = OD – 2TT = Thickness of Pipe L=Length of Pipe Volume of Pipe = π⁄4 (OD²-ID²) x L Weight of Pipe = π⁄4 (OD²-ID² ) x L x Material Density
A hemispherical dished end, also known simply as a hemispherical head or hemispherical cap, is a type of end closure or cap used in pressure vessels, tanks, and containers. It is characterized by its shape, which resembles half of a sphere. This design offers certain advantages in terms of strength and distribution of stress within …