AISI 4320 Steel, mock carburized 925°C (1700°F) for 8 hrs., reheated to 815°C (1500°F), oil quenched, 150°C (300°F) temper, 50 mm (2 in.) round

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AISI 4320 Steel, mock carburized 925°C (1700°F) for 8 hrs., reheated to 815°C (1500°F), oil quenched, 150°C (300°F) temper, 50 mm (2 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Key Words:	UNS G43200, ASTM A322, ASTM A331, ASTM A505, ASTM A519, ASTM A535
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	255
Hardness, Knoop	279	Converted from Brinell
Hardness, Rockwell B	98	Converted from Brinell
Hardness, Rockwell C	25	Converted from Brinell
Hardness, Vickers	269	Converted from Brinell
Tensile Strength, Ultimate	910 MPa
Tensile Strength, Yield	595 MPa
Elongation at Break	22.5 %	in 50 mm
Reduction of Area	56.4 %
Modulus of Elasticity	205 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel.
Poissons Ratio	0.29	Calculated
Machinability	60 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	Typical for steel.
Izod Impact	79.0 J

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000245 ohm-cm	Typical 4000 series steel

Thermal Properties	Original Value	Comments
CTE, linear	11.3 µm/m-°C @Temperature -18.0 - 95.0 °C	condition of specimen unknown
Specific Heat Capacity	0.475 J/g-°C	Typical 4000 series steel
Thermal Conductivity	44.5 W/m-K	Typical steel

Component Elements Properties	Original Value	Comments
Carbon, C	0.17 - 0.22 %
Chromium, Cr	0.40 - 0.60 %
Iron, Fe	95.855 - 96.98 %	As remainder
Manganese, Mn	0.45 - 0.65 %
Molybdenum, Mo	0.20 - 0.30 %
Nickel, Ni	1.65 - 2.0 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.30 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M432AX / 7714

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