309 Stainless Steel Heat Treatment Foil Wrap, 12" x 25', 2200°F Max Temperature, .002" Thickness

Simple to use; Place blade or other part in the Tool Steel Wrap; fold over and crimp edges forming an air tight package; place package in oven and heat treat according to metal directions. Placing a small chip of wood inside the foil packet helps to burn up oxygen inside the wrap. Use only once. Cuts easily with scissors. Type 309, annealed stainless steel foil has a maximum temperature of 2200°F Thickness: .002” Width: 12” Length: 25’

• Cuts Easily with heavy duty scissors
• Surface Protection: The primary benefit is preventing oxidation and scaling on the metal's surface during the high-temperature heat treatment process.
• Prevents Decarburization: Foil protects the metal from losing carbon from its surface when heated in the presence of oxygen, ensuring the metal's intended hardness is achieved.
• Mimics Vacuum Furnace Conditions: Properly sealed foil envelopes or "tool wrap" effectively create an oxygen-free environment around the part, mimicking the protective atmosphere of a vacuum furnace.
• Cost-Effective Alternative: Heat treat foil provides a more affordable way to achieve optimal results in heat treatment compared to specialized controlled atmospheric or vacuum furnaces.
• Maintains Consistent Temperature: The foil helps to ensure the metal heats and cools evenly, reducing the risk of warping or distortion.
• Reduces Clean-up: The foil minimizes scale formation, leading to less post-heat treatment cleaning and surface preparation.
• Convenience: Heat treating can be done on-site without needing to send parts out to a heat treating facility equipped with special atmospheric furnaces.
• Prevents the metal from reacting with oxygen during the heat treatment process, preserving its properties.