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How shall I calculate cooling rate of steel during welding. I have maximum heat input for every pass of welding , welding speed, area of the welding portion and welding drawing. can any body help me to calculat the cooling rate of the steel after welding. thanks and regards Sudipta jana

Dear all, We had a project in Portugal sea side for LNG terminal. Light coal from Indonesia is currently unloaded in Sines(Portugal) harbour. We were told by the client that this coal dust is aggressive specially for aluminium and galvanised steel. Does anybody know about risk of corrosion...

What are different stresses have to be considered in case of buried pipeline to calculat any leak or rupture for the corrosion.

We have selected the sample of CTOD test according to ASTM standard. Generally people (other studies) took 10mm thickness (w). If we take 4 mm (w) and make the specimens according to standards. What will be the effect. Because the sample thickness (minimum) has not been mentioned in ASTM E 1290...

Dear all Could you please help me for sample selection of charpy and CTOD test in welded structure. How do I select sample for CTOD or charpy. Observing microstructure of HAZ or Hardness where we find some abnormality we will take sample from there. or there is some standard for different steel...

We want to use 304 in LPG condenser system the temperature is (-100 C) quite low. is there any problem using 304 at that lower temperature. I want some references to support that.

Dear all Do you have the information? What are the different phases present in 9% Ni steel.How it's microstructure will differ in Water quench, normalised and quenched & tempered heat treatment.

What is the effect of Ni containt in steel in corrosion resistance at carbon dioxide atmosphere for low carbon dioxide partial pressure (0.1 bar). We have to select a material for condensate vapour return system and the composition of the vapour is having 15 mol% of carbon dioxide and 2 mol% of...

standard for cleaning descaling (pickling and passivation) of carbon and alloy steels. Alloy steel having specification ASTM A333 GRADE 3 AND ASTM A335 PRADE P5, P9 PICKLING AND PASSIVATION PROCEDURE AND STANDARD.

which alloy steel (composition) can fully protect carbon di oxide (15mol% CO2 and 2mol% H2O)corrosion. Corrosion rate will be 0 mpy

Which alloy steel (composition) can fully protect carbon di oxide corrosion (15 mol% CO2 and 2mol% H2O)in condensate pipe line system.

We are facing problem in unloading arm. it is used during unloading of LNG from the ship. Some of its parts are made by 316L SS. May be due to the lack of pickling and passivation the corrosion is observed on the surface. Some of the welded parts(316L)are also having corrosion after passivation...