Hi Eng-Tips Users,
We have had some difference of opinions in the office and i would like to put a question of 2 parts to you guys.
If/when you are/were designing a piece of equipment, how do you select the materials to use? Do you have any hard and fast rules? There are some obvious examples, such as something which requires extremely high tensile strength or has is very corrosive resistant etc.. but what we design here is general automation type equipment and alot of the pieces do not require specialised properties.
Second part of the question...for the same parts that do not require specialised properties, how do you call out the materials on your drawings? I know as engineers we like to be specific, but this can be limiting to the manufacturer. Do you call out a class of materials, or write a specific material and add "or equivalent" or do you approach this in a different way?
Thanks
We have had some difference of opinions in the office and i would like to put a question of 2 parts to you guys.
If/when you are/were designing a piece of equipment, how do you select the materials to use? Do you have any hard and fast rules? There are some obvious examples, such as something which requires extremely high tensile strength or has is very corrosive resistant etc.. but what we design here is general automation type equipment and alot of the pieces do not require specialised properties.
Second part of the question...for the same parts that do not require specialised properties, how do you call out the materials on your drawings? I know as engineers we like to be specific, but this can be limiting to the manufacturer. Do you call out a class of materials, or write a specific material and add "or equivalent" or do you approach this in a different way?
Thanks