A2 Tool Steel Heat Treat

Heat treatment a2 tool steels are heated slowly to 788 c 1450 f and this is followed by increasing the temperature to 954 c 1750 f.

A2 tool steel heat treat. A2 steel is an air hardening cold work tool steel. A2 is intermediate in wear resistance between o1 oil hardening tool steel and d2 high carbon high chromium tool steel. In this condition most of the alloy content exists as alloy carbides dispersed throughout a soft matrix. These steels must be heat treated to develop their characteristic properties.

A2 tool steels are further held at 954 c 1750 f for 30 to 45 minutes and finally removed from the furnace and cooled. By way of example a2 tool steel is annealed by heating to 1550 degrees f soaking for two hours at temperature furnace cooling 50 degrees f per hour to below 1200 degrees f followed by air cooling. Like d2 it is incredibly resistant to distortion during heat treating and is moderately machinable and grindable. The steel is composted of 1 percent carbon 3 percent silicon 6 percent manganese 5 3 percent chromium 1 1 percent molybdenum and 2 percent vanadium.

A2 has a fully spheroidized structure and has exceptionally low inclusion levels. A 5 chromium steel which provides high hardness after heat treatment with good dimensional stability. A2 tool steel is an air hardening cold work chromium alloy die steel that is preferable to o1 tool steel in applications requiring greater size stability machinability and safer hardening. Heat treatment of tool steels tool steels are usually supplied in the annealed condition around 200 250 brinell about 20 hrc to facilitate machining.

The wear resistance properties and cost place a2 between that of o1 and d2 tool steel making it a good all purpose grade for many applications. A2 tool steel a2 tool steel is a versatile air hardening tool steel that is characterized by good toughness and excellent dimensional stability in heat treatment. It is heat treatable and will offer a hardness in the range 57 62 hrc. Aisi a2 tool steel is high carbon high alloy tool steel designed to have excellent wear resistance and toughness.

This widely used tool steel has low distortion in heat treatment good machinability good toughness for severe service high abrasion resistance and deep hardening properties in large sections.