AISI Grade 18Ni (350) Maraging Steel, Aged, at RT, tested longitudinal, round bar 75 mm

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AISI Grade 18Ni (350) Maraging Steel, Aged, at RT, tested longitudinal, round bar 75 mm
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel; Maraging Steel
Material Notes:	Applications: rocket motor cases, load cells, flexures for guidance mechanisms of missiles, helicopter drive shafts, aircraft wing components, aluminum die casting dies, cores, pins, plastic molding dies, trim knees, cold forming dies and springs.
Key Words:	UNS K93120
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Physical Properties	Metric	English	Comments

Density	8.08 g/cc	0.292 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	2359 MPa	342100 psi
Tensile Strength, Yield	2320 MPa @Strain 0.2 %	336000 psi @Strain 0.2 %
Elongation at Break	6.2 %	6.2 %	In gage length 4.5 times the square root of the area.
Reduction of Area	28.6 %	28.6 %
Modulus of Elasticity	200 GPa	29000 ksi
Bulk Modulus	160 GPa	23200 ksi	Typical for steel.
Poissons Ratio	0.30	0.30	Calculated
Shear Modulus	77.0 GPa	11200 ksi	Estimated from elastic modulus

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

Thermal Properties	Metric	English	Comments
CTE, linear	11.3 µm/m-°C @Temperature 21.0 - 480 °C	6.28 µin/in-°F @Temperature 69.8 - 896 °F
Thermal Conductivity	25.3 W/m-K @Temperature 20.0 °C	176 BTU-in/hr-ft²-°F @Temperature 68.0 °F
	25.8 W/m-K @Temperature 50.0 °C	179 BTU-in/hr-ft²-°F @Temperature 122 °F
	27.0 W/m-K @Temperature 100 °C	187 BTU-in/hr-ft²-°F @Temperature 212 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.10 %	0.10 %
Boron, B	0.0030 %	0.0030 %
Carbon, C	<= 0.030 %	<= 0.030 %
Cobalt, Co	12 %	12 %
Iron, Fe	63 %	63 %	As remainder
Manganese, Mn	<= 0.10 %	<= 0.10 %
Molybdenum, Mo	4.8 %	4.8 %
Nickel, Ni	18.5 %	18.5 %
Phosphorus, P	<= 0.010 %	<= 0.010 %
Silicon, Si	<= 0.10 %	<= 0.10 %
Sulfur, S	<= 0.010 %	<= 0.010 %
Titanium, Ti	1.4 %	1.4 %
Zirconium, Zr	0.010 %	0.010 %

References for this datasheet.

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