AISI 1340 Steel, oil quenched from 830°C (1525°F), 540°C (1000°F) temper, 25 mm (1 in.) round

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AISI 1340 Steel, oil quenched from 830°C (1525°F), 540°C (1000°F) temper, 25 mm (1 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; AISI 1000 Series Steel; Medium Carbon Steel
Material Notes:	Can be heat treated to meet property requirements. Forms: hot rolled and cold finished bar, cold heading quality wire Applications: construction applications, machined components, high-strength bolts, screws, cap screws, socket screws, recessed-head screws.
Key Words:	UNS G13400, ASTM A322, ASTM A331, ASTM A519, ASTM A547, MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770
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Physical Properties	Original Value	Comments

Density	7.87 g/cc	Typical for steel

Mechanical Properties	Original Value	Comments
Hardness, Brinell	285
Hardness, Knoop	311	Converted from Brinell
Hardness, Rockwell B	99	Converted from Brinell
Hardness, Rockwell C	30	Converted from Brinell
Hardness, Vickers	301	Converted from Brinell
Tensile Strength, Ultimate	951 MPa
Tensile Strength, Yield	834 MPa
Elongation at Break	19.2 %	in 50 mm
Reduction of Area	57.4 %
Modulus of Elasticity	200 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel
Poissons Ratio	0.29	Typical For Steel
Machinability	50 %	Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	Typical for steel

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000174 ohm-cm	Typical steel

Thermal Properties	Original Value	Comments
CTE, linear	11.5 µm/m-°C @Temperature 20.0 °C	Typical steel
	12.2 µm/m-°C @Temperature 0.000 - 300 °C	Typical for steel
	13.9 µm/m-°C @Temperature 0.000 - 500 °C	Typical for steel
Specific Heat Capacity	0.472 J/g-°C	Typical steel
Thermal Conductivity	51.9 W/m-K	Typical steel

Component Elements Properties	Original Value	Comments
Carbon, C	0.38 - 0.43 %
Iron, Fe	97.25 - 97.87 %	As remainder
Manganese, Mn	1.6 - 1.9 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.35 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M134AG / 7329

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