AISI L6/UNS T61206/JIS SKT4/DIN 55NiCrMoV6 alloy tool steel sheet

Typical 1.2714 applications include forming dies, punches, hot shear knives, backing plates, bending and embossing tools.

Preheat slowly to 700°C then increase temperature more rapidly to 1050°C. Do not forge below 800°C. It is essential to cool slowly after forging, either in a furnace or in vermiculite.

Soak thoroughly at 740-760°C before furnace cooling at a maximum rate of 10°C per hour down to 600°C followed by cooling in air.

When tools made from 1.2714 steel are heavily machined or ground, the relief of internal strains is advisable before hardening to minimise the possibility of distortion. Stress relieving of this grade should be done after rough machining. To stress relieve, heat the component carefully to 600-650°C, allow a good soaking period, about two hours per 25mm of section. Cool in the furnace to 500°C then freely in air. Tools may then be finish machined before hardening.

Preheat to 600-700°C. Soak thoroughly, then increase rapidly to the hardening temperature of 850-880°C. Air or oil quench. Tools should be tempered as soon as they become hand-warm.

Heat uniformly to the required temperature allowing a soaking time of two hours per 25mm of ruling section. Withdraw from the furnace and allow to cool in air. A second tempering is highly recommended, the tool being allowed to cool to room temperature between tempers.

Heat treatment temperatures, rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment 1.2714.

Select the correct grade of wheel in consultation with the grinding wheel manufacturer. Ensure that the grinding wheel is in good condition by means of a suitable dressing tool. Wet grinding is a preferable option using a copious supply of coolant. If dry grinding is necessary then use a very soft wheel.