1. Coating Task Force Evaluation Balzars Futura Coupon Testing Page 1 of 4 Substrate Preparation Coating effect on compressive stress levels T-41 & T-41H (proprietary process) TiAlN - Balzar’s (Futura) Coating Case Western supplied coupons H-13 46-48Rc Oil Quenched 3” x.75” x.25”

2. Coating Task Force Evaluation Balzars Futura Coupon Testing Page 2 of 4 Measurement of Surface Compressive Value and Maximum Depth using X-ray Diffraction + Electro-polishing

3. Coating Task Force Evaluation Balzars Futura Coupon Testing Page 3 of 4 Lambda X-ray Diffraction Curves TiAlN - Applied at 940 degrees F Surface -100KSI Max -106.5KSI @.0019” Surface -116KSI Max -119.8KSI @.0057”

4. Coating Task Force Evaluation Balzars Futura Coupon Testing Page 4 of 4 Lambda X-ray Diffraction Curves TiAlN - Applied at 940 degrees F Combined Curves Applied coating temperature flattened the normal knee of the compressive curve. The T-41 & T-41H process still retains surface and depth values. for PVD coating substrate preparation practical, feasible, and beneficial.