AISI 4620 Steel, normalized, machined to 13.7 mm rounds, pseudocarburized, reheated to 925°C (1700°F), quenched and tempered

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AISI 4620 Steel, normalized, machined to 13.7 mm rounds, pseudocarburized, reheated to 925°C (1700°F), quenched and tempered
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Normalized at 925°C (1700°F) in 32 mm rounds, machined to 13.7 mm rounds, pseudocarburized at 925°C (1700°F) for 8hrs., box cooled to RT, reheated to 925°C (1700°F), oil quenched, 150°C (300°F) temper. Tested in 12.8 mm rounds.
Key Words:	SAE J404, SAE J412, SAE J794, UNS G46200, AMS 6294, ASTM A322, ASTM A331, ASTM A505, ASTM A535, MIL SPEC MIL-S-7493 (A4620)
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Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	311	311
Hardness, Knoop	338	338	Converted from Brinell
Hardness, Rockwell B	99	99	Converted from Brinell
Hardness, Rockwell C	34	34	Converted from Brinell
Hardness, Vickers	329	329	Converted from Brinell
Tensile Strength, Ultimate	1014 MPa	147100 psi
Tensile Strength, Yield	841 MPa	122000 psi
Elongation at Break	16 %	16 %	in 50 mm
Reduction of Area	50 %	50 %
Modulus of Elasticity	205 GPa	29700 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel
Poissons Ratio	0.29	0.29	Calculated
Machinability	65 %	65 %	Hot rolled and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000245 ohm-cm	0.0000245 ohm-cm	Typical 4000 series steel

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	0.475 J/g-°C	0.114 BTU/lb-°F	Typical 4000 series steel
Thermal Conductivity	44.5 W/m-K	309 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.17 - 0.22 %	0.17 - 0.22 %
Iron, Fe	96.405 - 97.38 %	96.405 - 97.38 %	As remainder
Manganese, Mn	0.45 - 0.65 %	0.45 - 0.65 %
Molybdenum, Mo	0.20 - 0.30 %	0.20 - 0.30 %
Nickel, Ni	1.65 - 2.0 %	1.65 - 2.0 %
Phosphorus, P	<= 0.035 %	<= 0.035 %
Silicon, Si	0.15 - 0.35 %	0.15 - 0.35 %
Sulfur, S	<= 0.040 %	<= 0.040 %

References for this datasheet.

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M462AY / 7896

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