Hi dudes.
I have here drawn bar made of 304Cu (1.4567) steel in solution annealed condition. Chemical composition C 0.011 Si 0.40 Mn 0.75 S 0.02 Cr 17.1 Mo 0.32 Ni 8.6 Cu 3.1%.
Please take a look at a photomicrographs linked below (1x transverse cut, 2x longitudinal cut). I have a dispute...
I want to ask you for your opinions regarding antimony influence to heat resistant steel castings. We found antimony content from 0.05 % to 0.1 % (in extremely cases) in two our materials (1 austenitic, 1 ferritic). Fero-niobium (columbium) is suspected as a source (investigation is still in...
Dear all.
I have just received the results from external lab with tensile testing results for heat resistant centrifugal casting (as is specified below).
Customer need us to reach: (+ results)
tensile strength at least 450 MPa / 65 KSI ........ we reached only 290 MPa, 2 specimens, third was...
Hi dudes
I am dealing with problem regarding chemical composition deviations. Our foundry production is based on cast analysis - analyse of the melt before pouring. Chemical composition of each our material is described in customer standards without any deviations mentioned. In some standards...
Hi guys,
I have one question for you...
We have heat resistant austenitic stainless steel made by centrifugal casting. It is chromium-manganese steel (20:10 %) with tensile strength about 700 MPa and elongation about 15%, but the tensile strength and elongation level is sometimes suddenly...
Dear all
Have you some experiences with alloying of hign manganese stainless steel (about 10% Mn) with sulphur (to 0,2 %S after solidification)? There is very strong reaction of manganese and sulphur which creates slaggy MnS layer and reduce content of both the elements. Exist some known method...
