What cutting speeds should I use for different material thicknesses?

Cutting speeds vary by material type and thickness. For mild steel at 30A, 22ga cuts at 461 ipm; at 40A, 22ga cuts at 822 ipm. For thicker materials, speeds are reduced—mild steel at 40A cuts 5/8 inch at 13 ipm. Stainless steel and aluminum have different recommended speeds listed in the cutting speed table (Section 6-2), with recommended cut speed approximately 80% of maximum.