Ramp rates for hardening of PH stainless steels.

[nrbastow]

I am working on implementing a new heat treating line, and am curious to see what, if any, guidelines exist for controlling/programing the ramp rates for the oven.

I will mainly be age hardening PH SS per AMS 2758/3. So I am aware of the required soak times. I am just looking for some advice on proper ramp rates.

 

[EdStainless]

We age tubing (17-7 and 17-4). We ramp as fast as we can.
Parts are placed into a hot furnace and away we go.

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Plymouth Tube

 

[metengr]

Depends on part size, thickness and geometry. For thick, complex-shaped parts, I would not simply place them into a hot furnace. You can use heating and cooling ramp rates in various codes and standards .