Flow capacity of the HotEnd mm3/s

Hey
Is anywhere documented the specs for the flow?
I know it depends on the temperature also, but for an rough starting point I can easily calculate the max speed, line width or layerheight if I know the this.

Well, you have the technical specs here: https://support.snapmaker.com/hc/en-us/articles/9773156785175-What-are-the-specs-of-J1-

With a nozzle width of 0.4mm, you can calculate a flow capacity of 14.4…16 mm³/s out of these specifications.

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Meanwhile a got also an answer from snapmaker support:

For materials such as PLA and ABS, the maximum recommended flow rate is approximately 16mm^3/s.

I’ll do a performance test like CNC kitchen did this: https://youtu.be/0xRtypDjNvI
After I have my final Setup