American Society for Testing and Materials.Comittee G-2 on Erosion and Wear. American Society for Testing & Materials.Committee GP2 on Erosion and Wear American society for testing and materials.Committee G-1 on Corrosion of metals American Society for Testing and Materials.Committee G-1 on Corrosion of Metals American Society for Testing and Materials.Committee E-42 on Surface Analysis. American Society for Testing and Materials.Committee E-2 on Emission Spectroscopy American Society for Testing and Materials.Committee E-9 on Fatigue. R.G.Bayer., American Society for Testing & Materials.Committee GP2 on Erosion and Wear American Society for Testing and Materials,Committee E-2 on Emission Spectroscopy American Society for Testing and Materials.Committee E-4 on Metallography