W4 the same as 316?

[Tintin]

I bought some pipe clips on ebay, advertised as 316. They have W4 stamped on them - is that 316 or 304?

 

[alahol2]

W4 = A2 304 stainless

 

[Tintin]

Thanks - thought so.

 

[Twister_Ken]

May have been made in Chiswick.

(sorry, London-centric joke).

 

[Tranona]

the bit to worry about is the screws. Sometimes even when the band is 316, the screw is 304, or even mild steel, so that is the bit which corrodes. Maybe just the threads go so it seems to work but is not gripping.

Not a product where you skimp - buy from a reliable source where you can physically check what you are buying.

 

[Fire99]

Have to agree. I buy from a local trade fastenings company and there is great reassurance speaking directly with someone who knows their stuff and can offer suggested (or alternative) products on the counter for you to ponder over.

Not to mention often at a very good price.

 

[vyv_cox]

W4 = A2 304 stainless

Never too old to learn. i had never heard that before but Google tells me you are correct. Thanks.

 

[macd]

the bit to worry about is the screws. Sometimes even when the band is 316, the screw is 304, or even mild steel, so that is the bit which corrodes.
Not a product where you skimp - buy from a reliable source where you can physically check what you are buying.

Spot-on, but are we talking pipe clips here (as the OP wrote) or hose clips, to which your good advice refers?

 

[Tintin]

Spot-on, but are we talking pipe clips here (as the OP wrote) or hose clips, to which your good advice refers?

Jubilee clips

 

[Tranona]

What are you going to use them for? In some applications they may be adequate, but if you are using them where there is chance of salt water leaking onto them - for example hoses to seacock tails then not worth the risk. Fresh water plumbing on the other hand would probably be OK.

 

[rob2]

I can't say for sure what material you have as there is a manufacturer of hose clips trqading as "W4" - so it may not be material designation, just a trade name.

http://www.w4limited.com/

Rob.

 

[AndyJ76]

Slight thread drift, but for connecting to sea cock tails where I would reasonably expect the fixing to stay put rather than be done and undone, I've bought one of these: http://kk.org/cooltools/archives/9735

You can use it with monel wire and it provides a semi-permanent fixing