AISI 4820H Steel, double quenched and tempered (230°C (450°F)), 1.2 mm case depth

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AISI 4820H Steel, double quenched and tempered (230°C (450°F)), 1.2 mm case depth
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel
Material Notes:	Carburized at 925°C (1700°F) for 8 hrs., pot cooled, reheated to 815°C (1500°F), oil quenched, reheated to 790°C (1450°F), oil quenched, 230°C (450°F) temper. 1.2mm case depth. Recommended practice for max. core toughness
Key Words:	UNS H48200, ASTM A304, SAE J1268, low carbon steels
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	401
Hardness, Knoop	432	Converted from Brinell
Hardness, Rockwell B	102	Converted from Brinell
Hardness, Rockwell C	56.5	case hardness at 1.2mm case depth.
Hardness, Vickers	425	Converted from Brinell
Tensile Strength, Ultimate	1355 MPa
Tensile Strength, Yield	1182 MPa
Elongation at Break	13 %	in 50 mm.
Modulus of Elasticity	205 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel
Poissons Ratio	0.29	Calculated
Machinability	50 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	Typical for steel.

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

Thermal Properties	Original Value	Comments
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 - 0.23 %
Iron, Fe	94.495 - 95.88 %	As remainder
Manganese, Mn	0.40 - 0.80 %
Molybdenum, Mo	0.20 - 0.30 %
Nickel, Ni	3.2 - 3.8 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.30 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M482CF / 8004

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