AISI 4023 Steel, normalized at 925°C (1700°F), machined to 13.7 mm (0.540 in.) rounds, pseudocarburized at 925°C (1700°F), box cooled to RT, reheated to 855°C (1570°F) and oil quenched, 150°C (300°F) temper

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AISI 4023 Steel, normalized at 925°C (1700°F), machined to 13.7 mm (0.540 in.) rounds, pseudocarburized at 925°C (1700°F), box cooled to RT, reheated to 855°C (1570°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	321	321
Hardness, Knoop	348	348	Converted from Brinell
Hardness, Rockwell B	99	99	Converted from Brinell
Hardness, Rockwell C	35	35	Converted from Brinell
Hardness, Vickers	339	339	Converted from Brinell
Tensile Strength, Ultimate	986 MPa	143000 psi
Tensile Strength, Yield	724 MPa	105000 psi
Elongation at Break	16 %	16 %	in 50 mm
Reduction of Area	49 %	49 %
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 13.7 mm (0.540 in.) rounds, pseudocarburized at 925°C (1700°F) and oil quenched, 150°C (300°F) temper
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
AISI 4023 Steel, normalized at 925°C (1700°F), machined to 13.7 mm (0.540 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
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
AISI 4023 Steel, normalized at 925°C (1700°F), machined to 13.7 mm (0.540 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

M4023G / 7432

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