Since I no longer have my truck I was considering ordering metal online. One site of interest is www.metalexpress.net. I am totally confused with different types of metal offered. Alloy Steel Cold or Hot Roll, Carbon Cold and Hot Roll. I looked at prices and they appeared to be decent compared to the local stores. What is the difference between different kinds of steel for general shop use. Fixtures, carts, shelving, etc.
1 sq x .049 w steel tube square welded X 96" $20.40
1 sq hr steel -astm A36 X 96" $26.10
1 sq crs 1018 steel X 96" $48.55
1 sq crs 1045 steel X96" $46.77
1 sq 4140 crs annealed alloy X 96" $55.00
Can anyone decode this information for a beginner to metalworking?
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