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The properties of copper versus stainless steel

I would like to ask if anyone can help me answer the following questions

1) Between pure copper and stainless steel 316, which material has higher yield strength, fracture toughness and wear resistance?

2) What properties determine the wear resistance of a material.

3) I want to design heat exchanger with bimetallic (copper/stainless steel) tubes (double-walled tubes) to improve both corrosion resistance and strength of the single-walled tubes.But I am not sure which material should be outside and inside to obtain maximum mechanical strength against vibration (due to crossflow across the tube bundle) and axial stress.

Thank you,

QUOC NGUYEN
University of Houston - HOUSTON, Texas
2004

1. Stainless steel

2. Coefficient of friction, hardness, opposing material, temperature, lubrication, pressure, etc, etc, etc.

3. I see you're at a university. Check out the engineering library. What's the copper for anyway?

Jeffrey Holmes, CEF
Spartanburg, South Carolina
2004