Small scales are nickel plated mild steel and solid bronze, extra large scales are high carbon steel. This was the first scale shirt I have made and sold. Was about 4200 small scales and about 400 extra large scales if I recall. Very heavy with the nickel scales, so I added an arming collar of padded cotton to distribute the weight.
The scales are the small tempered steel type. The shiny scales on the front are nickel plated. The bottom is finished with larger high-carbon tempered steel scales, and the sleeves and finished with a 4in1 weave of stainless steel rings. All edges have been reinforced with extra rings. This is my second scale shirt that has sold.