How to make groove on the surface of nonferrous metal 8

[mingki]

Hi, I am trying to make groove on the surface of nonferrous metal(currently, I am using nickel, monel, inconel).
It is not easy because the thickness of the metal I am using is just 0.027mm.
How can I make groove(depth: 0.0135mm) on the surface of nonferrous metal which has the thickness of 0.027mm.
I am desperate. Please help me.

 

[mingki]

Thanks a lot.
The material composition is so dynamic.. even the composition of the same material is different when it is from a different lot.
How can I make the performance uniformed bursting disc out of such dynamical material composition change?
Below is the inspection certificate from the material supplier.
They are same material(SUS316L), the difference is Lot number.

**Chemical composition**

SUS316L Material from A LOT:
C(%): 0.09, SI(%): 0.303, Mn(%): 1.59, S(%):0.0010, P(%): 0.029, Cr(%): 16.79 Ni(%): 10.13, Mo(%): 2.32, N(%): 0.034
Tensile strength 97.8KSI, Yield strength 49.5KSI, Elongation 5.50%, Hardness 88.0HRB

SUS316L Material from B LOT:
C(%): 0.022, SI(%): 0.51, Mn(%): 1.38, S(%):0.0010, P(%): 0.03, Cr(%): 16.49, Ni(%): 10.22, Mo(%): 2.05, N(%): 0.03, Cu(%): 0.3
Tensile strength 95.8KSI, Yield strength 43.7KSI, Elongation 59.8%, Hardness 83.0HRB

So, having the same mechanical characteristics of those material is different. If I want to have burstin disc which bursts at 1kgf/cm2, the material's thickness and he groove depth, width has to be different according to the material lot. This project is so challenging...

 

[cloa]

http://www.alibaba.com/product-gs/357479877/Stainless_steel_316L_1_4404_SUS316L.html

Your Carbon on Lot A is out of spec and Silicon on Lot B is out of Spec. Also Elongation on A lot is far too low.