Material Comparisons
Material Comparisons
(OP)
I am working with a product which is investment casted of 4140, through hardened to 400 BHN and surfaced hardened to 550-600 BHN. All kinds of abrasive material impacts and wears down my product as the system processes it.
Examples include: 6" minus material; Rock, broken glass, dirt(compost), wood, paper, plastics
I want to find a material that will deliver better wear properties without making it any more brittle. I am looking at 4340, 8630, and now manganese. Any suggestions would be appreciated whether or not my picks would work, not work; not using "White Iron" which has amazing wear properties but would crack and shatter like a ceramic pot.
Examples include: 6" minus material; Rock, broken glass, dirt(compost), wood, paper, plastics
I want to find a material that will deliver better wear properties without making it any more brittle. I am looking at 4340, 8630, and now manganese. Any suggestions would be appreciated whether or not my picks would work, not work; not using "White Iron" which has amazing wear properties but would crack and shatter like a ceramic pot.





RE: Material Comparisons
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
RE: Material Comparisons
I agree, the carbide insert option would be best, but it would require a design modification. Hardfacing should be better than straight 4140, and can be deposited directly on the surface, so maybe this could be implemented on a short-term basis while awaiting the longer-term solution.
RE: Material Comparisons
I need to maintain the same impact strength or close to it and purely increase wear life. Cost is still a consideration and even small baby steps would help. That's the reason I am looking into 4340 for better wear resistance. I looked into NiHard, but the weld ability is specialized and am unsure of availability. These modifications to the material would be an immediate change where after we would redesign for something like a carbide insert. There are numerous parts per machine and they still need to be mass produced. Cant afford too much individual detail per part as there are hundreds on a machine.