AISI Type A6 Tool Steel

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AISI Type A6 Tool Steel
Categories:	Metal; Ferrous Metal; Tool Steel; Air-Hardening Steel; Cold Work Steel
Material Notes:	High hardenability, high degree of dimensional stability in heat treatment, good wear resistance, fatigue life, toughness, and deep hardening qualities. Applications include cold forming, blanking and bending dies, forming rolls, drill bushings, knurling tools, master dies and gages.
Key Words:	AISI Medium-Alloy, Air-Hardening Tool Steels A6, UNS T30106, ASTM A681, FED QQ-T-570
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Physical Properties	Original Value	Comments

Density	8.03 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	61 - 62	as air quenched from 845°C, tempered for 2 hours. 61-62 HRC at 95°C temper, 60-61 HRC at 150°C temper, 58-59 HRC at 205°C temper, 56-57 HRC at 260°C temper, 55-56 HRC at 315°C temper, 52-53 HRC at 425°C temper, 50-51 HRC at 480°C temper, 48-49 HRC at 540°C temper.
Modulus of Elasticity	200 GPa
Bulk Modulus	160 GPa	Typical for steels.
Poissons Ratio	0.30	Calculated
Machinability	65 %	Based on Carbon tool steel.
Shear Modulus	77.0 GPa	Estimated from elastic modulus

Thermal Properties	Original Value	Comments
CTE, linear	11.8 µm/m-°C @Temperature 20.0 - 100 °C
	12.4 µm/m-°C @Temperature 20.0 - 200 °C
	13.2 µm/m-°C @Temperature 20.0 - 300 °C
	13.7 µm/m-°C @Temperature 20.0 - 400 °C
	14.1 µm/m-°C @Temperature 20.0 - 500 °C
	14.4 µm/m-°C @Temperature 20.0 - 600 °C
	14.7 µm/m-°C @Temperature 20.0 - 700 °C

Processing Properties	Original Value	Comments
Processing Temperature	150 - 425 °C	Tempering Temperature
	830 - 870 °C	Hardening Temperature
Annealing Temperature	730 - 745 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.65 - 0.75 %
Chromium, Cr	1.05 %
Iron, Fe	94 %	As Balance
Manganese, Mn	2.15 %
Molybdenum, Mo	1.05 %
Phosphorus, P	<= 0.030 %
Silicon, Si	<= 0.50 %
Sulfur, S	<= 0.030 %

References for this datasheet.

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MSTA6A / 14099

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