Originally Posted by ViperTX Well for CRS 1018 the coefficient of thermal expansion is 120 x 10 -7 per degree Celsius which basically says for 100 degree shift in Celsius (which is basically 212 degrees Farenheit) the metal would get longer by 120 x 10 -5 inches or .00120. So, I would not worry about it and use the steel channel. |
have you got the lengh in there somewhere... ie total linear expansion depends on the lengh.
i agree its probably not an issue though as aren't the rails also of steel?
My guess is you're right Viper the number will be small, butr it is an interesting point though,with delta between materials' thermal expansion rates it wouldn't take much for parts fastened together to do the banana.