Work Tool Steel
Technical Data Sheet
A2 is a 1% carbon, 5% chrome, air-hardening tool steel. A2 is known as a versatile, general purpose grade. A2 has better resistance to abrasion and wear than the "S" series shock resisting tool steels and more toughness and impact strength than the "D" series wear steels. A2 is used for a wide range of tooling applications ranging from general purpose punches and dies to components for plastic injection molding.
TYPICAL CHEMISTRY: C 1.00 Mo 1.00 Cr 5.00 V 0.20
MACHINABILITY: When properly annealed, A2 has a machinability rating of 60 as compared with a 1% Carbon Steel rated at 100.
DIMENSIONAL STABILITY: When air quenched from the proper hardening temperature, this grade can be expected to expand approximately .001 in. per in. Note: Distortion (bending, bowing and twisting) as well as part geometry can add to the variations in movement of a part being hardened.
THERMAL CYCLING: To avoid decarburization, this grade should be annealed and/or hardened in a controlled neutral atmosphere, vacuum or neutral salt furnace environment.
The values shown in this data sheet are to be used as a guide for estimating purposes only.
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