AISI E4340 H Steel, normalized, 25 mm round

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 H Steel, normalized, 25 mm round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 4000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	Normalized (heated to 870°C, air cooled), 25 mm round AISI E4340H 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:	AISI E4340H; alloy steels, UNS H43406, ASTM A304, SAE J1268, DIN 1.6562
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
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	1282 MPa	185900 psi
Tensile Strength, Yield	862 MPa	125000 psi
Elongation at Break	12.2 %	12.2 %	in 50 mm
Reduction of Area	36.3 %	36.3 %
Modulus of Elasticity	200 GPa	29000 ksi	AISI 4340
Bulk Modulus	159 GPa	23100 ksi	Estimated from elastic modulus
Poissons Ratio	0.29	0.29	Typical for steel
Machinability	50 %	50 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	78.0 GPa	11300 ksi	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	0.37 - 0.44 %	0.37 - 0.44 %
Chromium, Cr	0.65 - 0.95 %	0.65 - 0.95 %
Iron, Fe	95.015 - 96.48 %	95.015 - 96.48 %	As remainder
Manganese, Mn	0.60 - 0.95 %	0.60 - 0.95 %
Molybdenum, Mo	0.20 - 0.30 %	0.20 - 0.30 %
Nickel, Ni	1.55 - 2.0 %	1.55 - 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 E4340 H Steel, normalized, 50 mm (2 in.) round
AISI E4340 H Steel, normalized, 100 mm (4 in.) round
AISI E4340 H Steel, normalized, 13 mm (0.5 in.) round
AISI 1548 Steel, cold drawn, 19-32 mm (0.75-1.25 in) round
AISI 4340H Steel, annealed 810°C (1490°F)

M434EB / 7819

	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