11-30-2019, 03:04 PM
(11-26-2019, 03:30 PM)Vinny Wrote: Xometry now has steel - stainless, carbon and alloy.
I was going to order some 4140 from them and noticed a few things. First was the free shipping on orders over $50. I also read something in their shipping terms that says "qualifying orders" will ship free. It doesn't say everything ships for free.
Another note said that it (4140) ships directly from vendor (FastMetals). So I am assuming they selling third party? I also compared their prices to McMaster and discovered the Xometry prices are about the same as McMaster's top tier grade of 4140. (Hardened and precision size ground.) However they don't have a clear description on the Xometry site about the grade or hardness of their material. It shows "When Alloy Steel 4140 is hardened to its most workable hardness of Rockwell 28/32, it exhibits an excellent ratio of strength to ductility or toughness." It doesn't say if it comes hardened at 28/32 Rockwell though.
I wanted annealed 4140 (flat stock) for easier machining and will harden it afterward. McMaster has annealed stock at a much lower cost so they won out this time around for me.
(Edit to add:)
I just went to the FastMetals web site and got more info. Their 4140 flat stock is indeed annealed cold rolled material, it is not hardened.
However - a 1/2" x 1" x 12" bar from them (or Xometry) is $36.11
Same thing from Mcmaster is $14.61
Nuff said.
Willie