Dear Maui
I do not know or have any idea at all on the grade for this material, but this exhaust valve come with the engine come from France.
The chemical composition of the steel for the new valve is:
C=0.78 ; Si=0.243; Mn=8.850; Cr=18.32; Mo=0.152; Ni=2.3; Cu=0.155; v=0.07; w=0.081; P=0.0236...
For more information...
The New Valve means that the valve is totally brand new and never been used.
Used Valve means that the valve is used in the same engine as "Crack Valve."
Crack Valve means that the valve found a crack from the same engine with "Used Valve."
All these valves were used...
Dear all,
I seek some advice and opinion regarding this two micro-structures on how and what we can comment on the structure. Opinion and comment are really appreciated.
http://files.engineering.com/getfile.aspx?folder=4fd0af88-cc95-4b05-92d9-45026edd8655&file=micro_structure.docx
TQ CoryPad.
Actually there are a lot of result but some one told me to select only this value...therefore i post that result only. What is the important material to highlight if we do not know the standards?
Hi,
I conducted a spectrometer tests on the failure exhaust valve which the standard material is unknown. i managed to get the result below:
C=0.78 ; Si=0.243; Mn=8.850; Cr=18.32; Mo=0.152; Ni=2.3; Cu=0.155; v=0.07; w=0.081.
Can somebody help me to find the reference standard for this material?
i have chemical composition on the valve material as follow:
C=10.06 ; Mn=2.12 ; Fe=50.91 ; Ni=5.27 ; Cu=1.37 ; Si=0.37; Cr=20.56.
How i can know this result is approximately to which std material?
Tq. CoryPad, based on the usage what are the composition should we take attention for example something really can stand high temperature and pressure?
