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Hi guys, just a simple question: during the magnetic annealing of Fe-Ni 48, Do I have to expect some dimensionnal variation on thin laminations (heat treatment at 1100°C under controlled atmosphere). I'd like to know if I need to adapted the tooling to prevent a deformation of the lamination...

Hi, everything is in the title: I'm looking for the resistivity of a 35 CD4 and 30NC11 steel? Does anyone know one reference where I can find this data? I have to say that I spent quite a long time to get this information, without any success... Many thanks in advance for your kind help!

Hi guys, I'm writting a specification in order to get some 316L material for NACE application. In the norm MR0175, it is specified that martensite content of this grade has to be kept under a certain amount. I'm trying to fix the value, but I'm not finding any information about this. Does...

Hi guys, does anyone know a way to do a wet environement CO2 corrosion test? Seems that Carbonic acid (formed into the water by the CO2) is not stable and that there is no way to qualify the compatibility of some material with wet environnement + CO2... any clue?

Hi guys, just a quick question to poweruser of the NACE MR0175 norm, as I would like to be sure of that: In case of using an Inconel 625 in annealed condition, there is no hardness requirement for the base material and for the welds? For the base material, paragraph 6.2.2 says that the limit...

Hi guys, does anyone know a normative test (like salt brine) which could be used to evaluate the resistance of some polymers to CO2 corrosive (=humid) environnement? I'd like to qualify some electrical insulation in such environment, but I don't find any standard test procedure. Does someone...

High guys, I'm looking for some compatibility charts for some polymers with carbonic acid (to use these polymers in a wet CO2 environment). Where can I found these data for: Polyesterimide? Epoxys? Polyimide? You will certainly tell me it depends of the exact polymer (especially for...

Hi guys, all is in the titel: I'm looking for polymers compatible with carbonic acid, at temperature up to 100°C, and pressure up to 200 bar. Do you have any clues where I can find litterature on this topic?

Hi guys, I'm trying to find compatibility information for our material respect to CO2 corrosion. If there is a complete litterature on carbon steel, there is not much on polymers. We are dealing with coils, impregnation system and so on... Do you have any references on this compatibility? Is...

Hi everyone, We have to manufacture specific ball bearing for use at -70°C. Actually we use 100C6 steel. The question is, is this steel garde useable at this temperature, or do we need to choose an austenitic stainless steel instead? Does someone have litterature about the 100C6 behaviour at...

Dear all, I have a corrosion problem between a connector and a nickel cladded copper. The wire became all black, even if the connection is protected by a protection (shrinked on the wire). The wire is brazed with silver on the connector. The application is a vacuum pump, so there is...

Hi guys, I would like to control an overmoulding process, and especially the fact that the polymer is well in contact with a metallic can and that there is no air gap between them because of the retractation of the polymer during the process. I'm thinking of using US sensors. My first...

Dear all, I'm looking to find some 430FR steels in plate (dimension mini 450 x 450 x 70mm) for testing it in magnetic applications. However, this alloys seems to be only available in bars (by example carpenter is producing it in bars). My question is: is it possible to buy bars and to have it...

Hi everybody, it is certainly a dummy question, but as far as I can't find the answer, I'm asking: Is it possible to apply phosphating treatment on stainless steels, and more precisely on 17-4PH steel? Many thanks, David

Hi everyone, I was wondering if Fe-SI non-oriented grades, such as surahammars grades (http://www.sura.se/Sura/hp_main.nsf/startupFrameset?ReadForm) were able to be NACE compliant. I think it must be, all most severe criteria are met (HRC6<HRC22, Annealed between 790 and 840°C, no Ni, not...

Hi everyone. I'd like to know if a Fe-Si magnetic alloy can be considered as NACE compliant, how is it possible to justify (I've checked, it is not sayed into the MR0175 Nace standard). Anyone has a clue/Idea about it?

Hi everyone, does someone know where to find some altymid plates, ageing tests (lifetime) and prices? we need a lifetime of 8 years at 300°C in ambiant atmosphere, do you think this high temperature polymer could bear these high temperature?

Hi everybody, Everything in the title of the post: does anyone have clues about M50 VIM-Var corrosion behaviour? I'm looking for some data on the corrosion of this alloys in ambiant environnement (air) for bearings (without oil) at 300°C. Do you think it will be appropriate or I need to switch...

Hi, I'm looking for a thermoset or another material to do bobbin that will be functionning at about 300°C. Do you have an idea of what kind of material I can use for such an application? I was looking on the Dupont website, but it seems that there is only 240°C UL material. Thank you in...

Hello everyone. Does anyone know a material for a ball bearing that have to support 300°C in service, which would be quite simple to find and supply? We have specific ball bearing designed, and we would like to change the material to be able to design a machine supporting 300°C. Any idea...