Link to Shapeway's steel information webpage.
"To build steel models, special 3D printers deposit small drops of glue onto layers of stainless steel powder, one layer at a time, until the print is complete. We carefully remove these models from the printer. At this stage of the process, the objects are very fragile, similar to wet sand. The models then go through an infusion process that replaces the glue with bronze, creating a full metal product. Models are then processed to achieve your desired finish, sprayed with a sealant, and shipped to you."
Where you can buy the bracket.
Weights of the part printed in different types of materials.
Steel, as you can see it is very heavy:
Closer look at the part in 3d printed steel.