AISI 5140 Steel, oil quenched 845°C (1550°F), 540°C (1000°F) temper, 25 mm (1 in.) round

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AISI 5140 Steel, oil quenched 845°C (1550°F), 540°C (1000°F) temper, 25 mm (1 in.) round
Categories:	Metal; Ferrous Metal; Alloy Steel; AISI 5000 Series Steel; Low Alloy Steel; Carbon Steel; Medium Carbon Steel
Material Notes:	Oil quenched from 845°C, 540°C temper, 25 mm round. Post oil quenched hardness 53 HRC surface, 48 HRC half-radius, 45 HRC center
Key Words:	B.S. 530 A 40, B.S. 530 H 40, B.S. 530 M 40, B.S. 2 S 117, DIN 1.7035, AFNOR 42 C 4 (Fr), UNI 40 Cr 4 (Ital.), UNI 41 Cr 4 KB (Ital.), JIS SCr 4 H (Japan.), UNS G51400, ASTM A322, ASTM A331, ASTM A505, ASTM A519, SAE J404, SAE J412, SAE J770
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Physical Properties	Original Value	Comments

Density	7.85 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	293
Hardness, Knoop	319	Converted from Brinell
Hardness, Rockwell B	99	Converted from Brinell
Hardness, Rockwell C	31	Converted from Brinell
Hardness, Vickers	309	Converted from Brinell
Tensile Strength, Ultimate	972 MPa
Tensile Strength, Yield	841 MPa
Elongation at Break	18.5 %	in 50mm.
Modulus of Elasticity	205 GPa	Typical for steel
Bulk Modulus	160 GPa	Typical for steel.
Poissons Ratio	0.29	Calculated
Machinability	65 %	annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus	80.0 GPa	Typical for steels

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000228 ohm-cm @Temperature 20.0 °C
	0.0000281 ohm-cm @Temperature 100 °C
	0.0000352 ohm-cm @Temperature 200 °C
	0.0000530 ohm-cm @Temperature 400 °C
	0.0000785 ohm-cm @Temperature 600 °C

Thermal Properties	Original Value	Comments
CTE, linear	12.6 µm/m-°C @Temperature 20.0 - 200 °C
	13.3 µm/m-°C @Temperature 20.0 - 300 °C
	13.9 µm/m-°C @Temperature 20.0 - 400 °C
	14.0 µm/m-°C @Temperature 20.0 - 500 °C
	14.6 µm/m-°C @Temperature 20.0 - 600 °C
	14.9 µm/m-°C @Temperature 20.0 - 700 °C
Specific Heat Capacity	0.452 J/g-°C @Temperature >=100 °C
	0.473 J/g-°C @Temperature 20.0 - 200 °C
	0.519 J/g-°C @Temperature 20.0 - 400 °C
Thermal Conductivity	31.3 W/m-K @Temperature 600 °C
	37.7 W/m-K @Temperature 400 °C
	43.4 W/m-K @Temperature 200 °C
	44.6 W/m-K @Temperature 100 °C

Component Elements Properties	Original Value	Comments
Carbon, C	0.38 - 0.43 %
Chromium, Cr	0.70 - 0.90 %
Iron, Fe	97.395 - 98.07 %	As remainder
Manganese, Mn	0.70 - 0.90 %
Phosphorus, P	<= 0.035 %
Silicon, Si	0.15 - 0.30 %
Sulfur, S	<= 0.040 %

References for this datasheet.

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M514AM / 8077

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