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Do you have an alternative alloy in mind, particularly one that has an easily identifiable UNI number.

Hey, I don't think our buddies in the EU would do that, surely not.

Hi TVP Thanks for your reply. This is the problem we face. The Italians are insistent on this equivalent and will not entertain the argument that it does not exist. It is causing a big problem for my company since most toasters use this new grade of wire. The company who manufacture it is...

There is a big problem with the Italian sanitary department refusing customs entry for food related products that use AISI-204Cu Stainless Steel wire. They reject it because it has no UNI equivalent. Does anyone know the UNI equivalent of this very recent alloy?

Thanks You are preaching to the converted here. You know what its like the technical Director knows best. Its not my reputation on the line if the 316 takes a dive. I take your point re the 444 especially when its a Chinese manufacturer - this one lies through his teeth !! Will keep you...

People are not keen on duplex - too expensive. I have tried boilers in 444 but the manufacturer complained that it was too hard to form ( 1.2mm thick sheet metal pressing ). We have changed the brazing from silver solder to nickel done in a controled oven at 1150 degrees C. This obviously...

Sorry? Please expand " water decom issue" Many thanks.

Hi Ed Thanks, I will still persevere with the duplex or 444, the sacrifial anode is another suggestion I can put to the manufacturer. The main point is my water sample can now be constructed to test ANY solution. I am sure I will be back please keep your email notification checked.

Any preference for the sacrifial anode material, shape fixing etc?

Oh my brain hurts - I am just a poor mech eng with a general knowledge of materials - this is getting a bit specialist. I will try and look at the links you suggest. The current ( silver ) brazing is done by hand ( torch )-ouch!. The sub contract boiler maker can and will nickel braze in an...

Hi I am convinced that the boiler is cracking due to CSCC as you learned gentlemen suggest. These cracks may be initiated from stress cracks already in the material due to poor post production processing. The reason the boilers are failing is that the water in Israel is Hi in Chlorides - the...

As I said I am going to filter the water before boiling. My original Q was whether I could leave the metallic contaminants out. I think the answer to that is yes. Everybody has a big No NO to 4445 at the moment. I initially specified 2205 but for some reason my Chinese supplier could not get...

Hi - there is no Sulphur in the water. Had yet another meeting regarding this boiler. The manufacturers do NOT like 444, they say it is too hard and cannot be deep drawn ib the same tools as the 444. Can I ask a simple question. If you had to choose a material that was available as a 1mm thick...

Thanks for that Mac. I may have over dramatized. We had big problems getting 1.0mm thick 444 in China. We have just made samples. These are on test in China and I think one has failed due to cracking. although I cannot be sure. We are definitely having problems with the brazing of the heating...

Hi Sorry Ed I am not second guessing your material selection. The water being heated is high in Chlorides and metals. I am also investigating filtering the water first by running it through a resin. I need to make samples of the water for test. I have been told that it is far easier to make...

Hi Guys I am still have big big problems. Can anyone suggest a company / consultant who I can talk to in the UK regading this problem ?????

Thanks you all very much. I now feel that I can make a recomendation for a material change. I am going to try and get some samples made in 439, 444 and 2205. I will also make recomendations regarding general construction, handling and cleaning. We will also look to modify the water. Final...

Hi Guys The water is Hi in Alluminium Hi in Chlorides Hi electrical conductivity ( salts ) Hi in Iron Hi In Manganese Hi in Nickel Please help with you final suggestions for material

1. Material grade SUS304 2. Hardness HR-15T 80-90 3. Thickness 1.2mm 4. Forming process - pressing 5 Cleaning process - chemical cleaning

Once again, thanks a lot. In an industry that is very cost concious many steps have to be gone through to specify a more expensive material ( which I assume some of these are ). Your info is invaluable to me. I will give the site credit for this and if I knew your names, you too. Please...