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The reason I'm looking for a substitute is that I'd like to manufacture a prototype first and that will be in a CNC. Yield stress and hardness are important.

Hello, I am looking for a material substitute for ASTM A148 (130-115) cast steel for a prototype I will be building. I am not ready to invest for a casting quite yet and would like to know what is a good alternative to the original casting steel. Thanks

@rudyeb...Are you located in or near the SF Bay Area?

@berkshire: The clamp in the picture came from a prototype stowing design that was given to my boss years ago at a fair overseas...I haven't been able to track it down to a manufacturer yet. the link you sent looks interesting...thanks a lot.

@Berkshire: West Marine was the first place I checked out. No dice. They also happen to be our primary retailer. @KENAT: D'uuuh @ myself. Thanks tho.

@KENAT: What are those?

@DAVIDSTECKER: I need them in 316SS or aluminum. 304SS will not survive on a boat.

@dhengr: I had not realized there was anything special about this part until I conducted a market search which included most if not all of the places that people have posted above (thanks for the input guys!) It looks like a pretty commonplace pipe clamp-half, except I can't find anyone who...

And here is the top view. Thanks people.http://files.engineering.com/getfile.aspx?folder=d48c022f-94bd-46eb-ac01-b0ec70581ec1&file=3-hole_clamp_004.jpg

I just realized that the pic attached to the first post is wrong. This is the side view of the clamp. I will post the top view next. (I don't know how to attach multiple images to a post)http://files.engineering.com/getfile.aspx?folder=c5102d7e-4e9e-463f-ac49-c20acef834ab&file=3-hole_clamp_003.jpg

Hi everyone, I'm looking to find yet another rare part. See pic attached. This is a 3 hole pipe clamp out of 316SS. It could be aluminum as well (6061, 6063 or other alloy). Can you direct me to places where you think I'm likely to find this part? The hole in the top is not a must (we can...

@hendersdc: Thanks...will check them out!

@DLiteE30 I've already seen that one. I need the strut in 316 SS or Aluminum. That company doesn't have them.

Hi all, Can you please take a look at the attached picture and tell me if there is a name other than a strut channel for the slotted part. I've been looking for someone who makes 316 stainless or aluminum strut channels like this one (about 13/16 by 13/32) but can't find one. I thought maybe...

@ Berkshire: It is indeed for a Fortress Anchor. @ dgallup: How much minimum thickness would you recommend for the polyurethane insert? Does 0.1 in sound too thin?

Because the part that it is going to hold is aluminum. The aluminum will scratch the plastic inevitably and since this is a high-end marine product, customers will not want something that will start looking worn and torn after only a few uses.

This assembly will be used to stow an aluminum anchor and be attached to stanchions on a boat. So yes corrosive environment for sure. This is why the body is 6061 aluminum.

Probably only a few prototypes initially. If my boss likes it and decides to go with it, we may be making 50 each of different sizes of this product yearly.

Hi everyone. I've attached the picture of a part that's included in a design I'm involved in. It's a 6061 aluminum tube of 3.15in OD, and about 0.15in wall thickness. The cut that starts on one end and ends about halfway along the length of the tube (the tube is 21 in long) is approx. 0.2 in...