Ticronic Tool Steel Foil is a type 321 annealed stainless steel used in the heat treating of tool steel parts. The wrap eliminates the need for Ni-Chrome or box packing or the use of sawdust or other carbonaceous materials. No special controlled atmosphere furnaces are required. Guaranteed to be taken up to 2000 degrees Fahrenheit. Simple to use; place tool in Ticronic Tool Steel Wrap; fold over and crimp edges forming an airtight package; place package in oven and, heat treat in usual way. Further technical information is available upon request. For special applications, Ticronic 2000 or 321/.003" thickness stainless steel foil is available for higher temperature applications. Ticronic 2000 now available for higher temperature applications such as high speed steels. Ticronic 2000 can be used for temperatures approaching 2250 degrees fahrenheit! Available in 50' and 100' rolls just like our regular Ticronic. Ticronic 2000 is the answer for high temperature heat treating. Works for most applications and eliminates the need for double wrapping or using .003" thick foil. Please note that high temperature applications require tool to be at highest temperatures for a very short period of time. For best high temperature results follow instructions very specifically.