AISI E4340 Steel, oil quenched 845°C, 425°C (800°F) temper

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

AISI E4340 Steel, oil quenched 845°C, 425°C (800°F) temper
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	AISI E4340 has a favorable response to heat treatment (usually oil quenching followed by tempering) and exhibits a good combination of ductility and strength when treated thusly. Uses include piston pins, bearings, ordnance, gears, dies, and pressure vessels.
Key Words:	alloy steels, UNS G43406, ASTM A304, ASTM A331, ASTM A505, ASTM A519
Vendors:	No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
Printer friendly version Download as PDF Download to Excel (requires Excel and Windows) Export data to your CAD/FEA program Add to Folder:

Physical Properties	Metric	English	Comments

Density	7.85 g/cc	0.284 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	1595 MPa	231300 psi
	1985 MPa @Temperature -195 °C	287900 psi @Temperature -319 °F
Tensile Strength, Yield	1475 MPa	213900 psi
	1840 MPa @Temperature -195 °C	267000 psi @Temperature -319 °F
Elongation at Break	12 %	12 %	in 50 mm
	4.0 % @Temperature -195 °C	4.0 % @Temperature -319 °F	in 50 mm
Reduction of Area	46 %	46 %
	11 % @Temperature -195 °C	11 % @Temperature -319 °F
Modulus of Elasticity	212 GPa	30700 ksi
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.30	0.30	Calculated
Fatigue Strength	338 MPa	49000 psi	Notched Limit
	614 MPa	89100 psi	Unnotched Limit
	248 MPa @Temperature -195 °C	36000 psi @Temperature -319 °F	Notched Limit
	841 MPa @Temperature -195 °C	122000 psi @Temperature -319 °F	Unnotched Limit
Machinability	50 %	50 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	81.5 GPa	11800 ksi	Estimated from elastic modulus
	82.0 GPa @Temperature -195 °C	11900 ksi @Temperature -319 °F	Estimated from elastic modulus

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000248 ohm-cm @Temperature 20.0 °C	0.0000248 ohm-cm @Temperature 68.0 °F
	0.0000298 ohm-cm @Temperature 100 °C	0.0000298 ohm-cm @Temperature 212 °F
	0.0000552 ohm-cm @Temperature 400 °C	0.0000552 ohm-cm @Temperature 752 °F
	0.0000797 ohm-cm @Temperature 600 °C	0.0000797 ohm-cm @Temperature 1110 °F

Thermal Properties	Metric	English	Comments
CTE, linear	11.3 µm/m-°C @Temperature 20.0 °C	6.28 µin/in-°F @Temperature 68.0 °F
	12.4 µm/m-°C @Temperature 250 °C	6.89 µin/in-°F @Temperature 482 °F
	13.7 µm/m-°C @Temperature 500 °C	7.61 µin/in-°F @Temperature 932 °F
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	0.38 - 0.43 %	0.38 - 0.43 %
Chromium, Cr	0.70 - 0.90 %	0.70 - 0.90 %
Iron, Fe	95.175 - 96.27 %	95.175 - 96.27 %	As remainder
Manganese, Mn	0.65 - 0.85 %	0.65 - 0.85 %
Molybdenum, Mo	0.20 - 0.30 %	0.20 - 0.30 %
Nickel, Ni	1.65 - 2.0 %	1.65 - 2.0 %
Phosphorus, P	<= 0.025 %	<= 0.025 %
Silicon, Si	0.15 - 0.30 %	0.15 - 0.30 %
Sulfur, S	<= 0.020 %	<= 0.020 %

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

Users viewing this material also viewed the following:
AISI 1045 Steel, cold drawn, high temperature stress relieved, 50-75 mm (2-3 in) round
AISI E4340 Steel, oil quenched 800°C (1470°F), 540°C (1000°F) temper, 13 mm (0.5 in.) round
AISI E4340 Steel, heat treated, fatigue tested
AISI E4340 Steel, heat treated, pseudonitrided, fatigue tested
AISI E4340 Steel, oil quenched 845°C, 650°C (1200°F) temper

M434DI / 7802

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message