AISI 1118 Steel, as cold drawn, round

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AISI 1118 Steel, as cold drawn, round
Categories:	Metal; Ferrous Metal; Carbon Steel; AISI 1000 Series Steel; Low Carbon Steel
Material Notes:	Applications for this steel include medium duty shafts, studs, pins, distributor cams, cam shafts, and universal joints.
Key Words:	NS G11180, ASTM A29, ASTM A107, ASTM A108, FED QQ-S-637 (C1118), SAE J403, SAE J412, SAE J414
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Physical Properties	Metric	English	Comments

Density	7.87 g/cc	0.284 lb/in³	Typical for steel.

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	121 @Diameter 50.8 - 76.2 mm	121 @Diameter 2.00 - 3.00 in
	131 @Diameter 31.8 - 50.8 mm	131 @Diameter 1.25 - 2.00 in
	143 @Diameter 22.2 - 31.8 mm	143 @Diameter 0.875 - 1.25 in
	149 @Diameter 15.9 - 22.2 mm	149 @Diameter 0.625 - 0.875 in
Hardness, Knoop	140 @Diameter 50.8 - 76.2 mm	140 @Diameter 2.00 - 3.00 in	Converted from Brinell
	150 @Diameter 31.8 - 50.8 mm	150 @Diameter 1.25 - 2.00 in	Converted from Brinell
	163 @Diameter 22.2 - 31.8 mm	163 @Diameter 0.875 - 1.25 in	Converted from Brinell
	169 @Diameter 15.9 - 22.2 mm	169 @Diameter 0.625 - 0.875 in	Converted from Brinell
Hardness, Rockwell B	68 @Diameter 50.8 - 76.2 mm	68 @Diameter 2.00 - 3.00 in	Converted from Brinell
	73 @Diameter 31.8 - 50.8 mm	73 @Diameter 1.25 - 2.00 in	Converted from Brinell
	78 @Diameter 22.2 - 31.8 mm	78 @Diameter 0.875 - 1.25 in	Converted from Brinell
	80 @Diameter 15.9 - 22.2 mm	80 @Diameter 0.625 - 0.875 in	Converted from Brinell
Hardness, Vickers	126 @Diameter 50.8 - 76.2 mm	126 @Diameter 2.00 - 3.00 in	Converted from Brinell
	136 @Diameter 31.8 - 50.8 mm	136 @Diameter 1.25 - 2.00 in	Converted from Brinell
	149 @Diameter 22.2 - 31.8 mm	149 @Diameter 0.875 - 1.25 in	Converted from Brinell
	155 @Diameter 15.9 - 22.2 mm	155 @Diameter 0.625 - 0.875 in	Converted from Brinell
Tensile Strength, Ultimate	415 MPa @Diameter 50.8 - 76.2 mm	60200 psi @Diameter 2.00 - 3.00 in
	450 MPa @Diameter 31.8 - 50.8 mm	65300 psi @Diameter 1.25 - 2.00 in
	485 MPa @Diameter 22.2 - 31.8 mm	70300 psi @Diameter 0.875 - 1.25 in
	515 MPa @Diameter 15.9 - 22.2 mm	74700 psi @Diameter 0.625 - 0.875 in
Tensile Strength, Yield	345 MPa @Diameter 50.8 - 76.2 mm	50000 psi @Diameter 2.00 - 3.00 in
	380 MPa @Diameter 31.8 - 50.8 mm	55100 psi @Diameter 1.25 - 2.00 in
	415 MPa @Diameter 22.2 - 31.8 mm	60200 psi @Diameter 0.875 - 1.25 in
	450 MPa @Diameter 15.9 - 22.2 mm	65300 psi @Diameter 0.625 - 0.875 in
Elongation at Break	12 % @Diameter 50.8 - 76.2 mm	12 % @Diameter 2.00 - 3.00 in	in 50 mm
	13 % @Diameter 31.8 - 50.8 mm	13 % @Diameter 1.25 - 2.00 in	in 50 mm
	15 % @Diameter 15.9 - 22.2 mm	15 % @Diameter 0.625 - 0.875 in	in 50 mm
	15 % @Diameter 22.2 - 31.8 mm	15 % @Diameter 0.875 - 1.25 in	in 50 mm
Reduction of Area	30 % @Diameter 50.8 - 76.2 mm	30 % @Diameter 2.00 - 3.00 in
	35 % @Diameter 31.8 - 50.8 mm	35 % @Diameter 1.25 - 2.00 in
	40 % @Diameter 15.9 - 22.2 mm	40 % @Diameter 0.625 - 0.875 in
	40 % @Diameter 22.2 - 31.8 mm	40 % @Diameter 0.875 - 1.25 in
Modulus of Elasticity	200 GPa	29000 ksi	Typical for steel
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.29	0.29	Typical For Steel
Shear Modulus	80.0 GPa	11600 ksi	Typical for steel.
Izod Impact	108 J	79.7 ft-lb	as rolled

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000174 ohm-cm	0.0000174 ohm-cm	Typical steel

Thermal Properties	Metric	English	Comments
CTE, linear	11.5 µm/m-°C @Temperature 20.0 °C	6.39 µin/in-°F @Temperature 68.0 °F	Typical steel
	12.2 µm/m-°C @Temperature 0.000 - 300 °C	6.78 µin/in-°F @Temperature 32.0 - 572 °F	Typical for steel
	13.9 µm/m-°C @Temperature 0.000 - 500 °C	7.72 µin/in-°F @Temperature 32.0 - 932 °F	Typical for steel
Specific Heat Capacity	0.472 J/g-°C	0.113 BTU/lb-°F	Typical steel
Thermal Conductivity	51.9 W/m-K	360 BTU-in/hr-ft²-°F	Typical steel

Component Elements Properties	Metric	English	Comments
Carbon, C	0.14 - 0.20 %	0.14 - 0.20 %
Iron, Fe	98.03 - 98.48 %	98.03 - 98.48 %	As remainder
Manganese, Mn	1.3 - 1.6 %	1.3 - 1.6 %
Phosphorus, P	<= 0.040 %	<= 0.040 %
Sulfur, S	0.080 - 0.13 %	0.080 - 0.13 %

References for this datasheet.

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M1118D / 7157

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