24 in. Low Carbon Flat Stock (1/16 to 5/32 Thickness) Starrett's low carbon flat stock is a fine grained, vacuum degassed carbon steel. It is easily machined, has excellent weld ability and responds uniformly to case hardening. The manganese content provides greater strength and hardness, compared to many other carbon steels. This stock is often used in its natural state for such applications as backup plate, stripper plates, punch pads and machine parts. Made in USA.