Thanks for the publication! Under § 5.1.1, they do mention hardfacing (which is typically very different from a 307 alloy!).
Using a Etecta 5 Spezial filler metal, in Germany... I didn't find anything, but I've forwarded this question to one of my contacts at voestalpine, one of the major German...
For light rail (metro, tramways, ...) in cities, in tight curves the top of the rail is sometimes welded with a 307 filler material (austenitic, work-hardenable layer with 18-8-6 Cr-Ni-Mn chemistry). The goal of this layer is (supposed to be) the mitigation of noise due to the wheel slip.
It is...
Make sure you use wire suitable for multi layer welds. Some wire/flux combinations don't have the ductility for something like this.
Can't say for sure without more details, but this shouldn't be a problem. In construction, you'll be using run of the mill materials, and 10 mm is nothing compared...
If you want to know if dishing is a concern, check bolt tension (can be estimated from the mounting torque) and contact surface (by undoing the bolts and checking the imprints, or by CAD using the true dimensions), divide one by the other to get the contact pressure an evaluate against the yield...
It's good practice, even if not required by standard or code, to use washers over slotted holes! Contact pressure goes up to approx. the double, as the contact area halves.
Especially so, if the slotted holes are ment to allow for thermal expansion. Which is another jar of pickles alltogether.
It'll cover all aust. stainless steels in gr. 8.
It's up to you to make sure they're weldable with the exact same filler metal, when writing WPS'ses...
Laser welding could possibly be a good solution. Joint looks cold from the picture. You need to optimise your parameters and perform macrographic sections in order to be able to correctly assess the weld quality.
I've got extensive experience with fabrication of train panels (floor, roof, side wall, partitions, ...). Similar, but not the same. Certainly not glue bonded, they're exclusively extruded honeycomb panels.
All longitudinal joints there are welded by FSW. Double-sided simultaneously, if possible...
Based on the max. alloying elements, carbon equivalent could go as high as 0.6
Preheat of 100°C is insufficient. 200° is better, but on a casting of that thickness still on the low side. Do you know for sure the temperature is achieved "inside" the plate, so not only on the surface?
Why are you...
That is correct under ISO 2553, unless the dimensioning next to the weld symbol (that is mandatory, not optional!) tells you otherwise.
This discussion is helpful in making my courses better / more clear!
Latest update:
I've updated my schematic as it seems there is still confusion. There is no obligation to execute this as a full pen weld. Both options are possible. That's the reason why (under ISO at least) it is necessary to add the dimensions for each weld.
As always, wisely choose your axes, choose your load combinations, divide the combined stresses in their most basic components along those axes, and evaluate using the Von Mises model. Easily said, sometimes a bit more difficult to practise. But a good understanding/visualisation of those...
There is a separate audit schedule attached to the CE marking requirement (that very few USA manufacturers will follow).
Ask your client if they absolutely need the CE mark, or if a (3.1) certificate that mentions all (chemical and mechanical) specs is sufficient. Chances are, they won't care...
