Thickness varies from 0.015" to 0.03" based on material. It doesn?t affect the appearance and you can mix a fatter with a thinner scale.
0.015" Thick 1/4 hard temper Material is 410 stainless and it will rust if left wet. The magnetite layer is black rust. If you need a black that is more consistent or can get wet I recommend anodized aluminum.
Ring size for standard overlapping scalemail pattern: 18g SWG 3/16" ID
Scales per square foot: approximately 1000
You will need 2 rings per scale; more if you are stablizing the edges.