
Precision Brand® 321 tool wrap sheets are made of Type 321, soft annealed, stainless steel. They help protect from scale and oxide buildup during heat treating in atmospheric furnaces while eliminating decarburization buildup. Precision Brand® tool wraps are resistant to chromium carbide precipitation during exposure to high temperatures and can be used in furnaces up to 2000 degrees F. Precision Brand® tool wraps protect the surfaces of air hardening tool steels. These are available in flat sheets 12 inches wide and 24 inches long.