Annealed. Core hardness = 300 HV0,3. After nitriding >1100HV0,3 and 80-100 um layer thickness which serves for the application just fine.
before pickling Ra <0,4 um and Rz < 1,6 um and after pickling both increased e.g. Rz = 5 um. We added passivation after pickling and yes, you are correct...
@EdStainless:
Material:
As mentioned we tried the austenite 303, 304, 316L and in all cases the result was corrosion. 316L was best in terms of corrosion amount, but it was still there. 303 or 304 is chosen due to CNC machining and price and going to 316L did make no sense due to the tests and...
Dear all.
Problem:
- surface corrosion occurrence of nitrided 303 rod after being exposed to 85°C and 85%RH test (total duration 1000h, corrosion occurrence already in 24h)
- corrosion occurs on non-nitrided area of the rod.
Requirements:
- rod dimensions: dia. 4 mm, length 55 mm, nitrided...
