AISI 4023 Steel, normalized at 925°C (1700°F), machined to 25 mm (1 in.) rounds, pseudocarburized at 925°C (1700°F), box cooled to RT, reheated to 775°C (1430°F) and oil quenched, 150°C (300°F) temper

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AISI 4023 Steel, normalized at 925°C (1700°F), machined to 25 mm (1 in.) rounds, pseudocarburized at 925°C (1700°F), box cooled to RT, reheated to 775°C (1430°F) and oil quenched, 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:	Specimens were machined to 12.8 mm (0.505 in.) rounds and tested; Forging temp.: 1230°C (2250°F). Normalizing temp.: 900 - 955°C. Carburizing temp.: 900 - 925°C. Tempering temp.: 120 - 175°C.
Key Words:	UNS G40230, ASTM A29, ASTM A29M, ASTM A322, ASTM A331, ASTM A519, ASTM A534, ASTM A752, SAE 770, SAE J404, SAE J412, SAE J770
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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	223	223
Hardness, Knoop	246	246	Converted from Brinell
Hardness, Rockwell B	96	96	Converted from Brinell
Hardness, Rockwell C	18	18	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	235	235	Converted from Brinell
Tensile Strength, Ultimate	724 MPa	105000 psi
Tensile Strength, Yield	415 MPa	60200 psi
Elongation at Break	19 %	19 %	in 50 mm
Reduction of Area	48 %	48 %
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	70 %	70 %	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	0.20 - 0.25 %	0.20 - 0.25 %
Iron, Fe	98.13 - 98.75 %	98.13 - 98.75 %	As remainder
Manganese, Mn	0.70 - 0.90 %	0.70 - 0.90 %
Molybdenum, Mo	0.20 - 0.30 %	0.20 - 0.30 %
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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AISI 4023 Steel, normalized at 925°C (1700°F), machined to 25 mm (1 in.) rounds, pseudocarburized at 925°C (1700°F), box cooled to RT, reheated to 800°C (1470°F) and oil quenched, 150°C (300°F) temper
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AISI 4023 Steel, normalized at 925°C (1700°F), machined to 25 mm (1 in.) rounds, pseudocarburized at 925°C (1700°F) and oil quenched, 150°C (300°F) temper

M4023A / 7426

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