AISI 4820H Steel, heat treated, machined to 13.7 mm, pseudocarburized, reheated to 730°C (1350°F), 150°C (300°F) temper

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AISI 4820H Steel, heat treated, machined to 13.7 mm, pseudocarburized, reheated to 730°C (1350°F), 150°C (300°F) temper
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Normalized 925°C (1700°F) in 32mm rounds, machined to 13.7 mm rounds, pseudocarburized at 925°C (1700°F) for 8 h., box cooled to RT, reheated to 730°C (1350°F), oil quenched, 150°C (300°F) temper, machined and tested in 12.8mm rounds.
Key Words:	UNS H48200, ASTM A304, SAE J1268, low carbon steels
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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	363	363
Hardness, Knoop	392	392	Converted from Brinell
Hardness, Rockwell B	100	100	Converted from Brinell
Hardness, Rockwell C	40	40	Converted from Brinell
Hardness, Vickers	384	384	Converted from Brinell
Tensile Strength, Ultimate	1230 MPa	178000 psi
Tensile Strength, Yield	806 MPa @Strain 0.2 %	117000 psi @Strain 0.2 %
Elongation at Break	13.7 %	13.7 %	in 50 mm.
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	50 %	50 %	annealed 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 - 0.23 %	0.17 - 0.23 %
Iron, Fe	94.495 - 95.88 %	94.495 - 95.88 %	As remainder
Manganese, Mn	0.40 - 0.80 %	0.40 - 0.80 %
Molybdenum, Mo	0.20 - 0.30 %	0.20 - 0.30 %
Nickel, Ni	3.2 - 3.8 %	3.2 - 3.8 %
Phosphorus, P	<= 0.035 %	<= 0.035 %
Silicon, Si	0.15 - 0.30 %	0.15 - 0.30 %
Sulfur, S	<= 0.040 %	<= 0.040 %

References for this datasheet.

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M482CK / 8009

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