AISI Grade 18Ni (200) Maraging Steel, Aged, 150 mm square bar, tested in transverse direction

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AISI Grade 18Ni (200) Maraging Steel, Aged, 150 mm square bar, tested in transverse direction
Categories:	Metal; Ferrous Metal; Alloy Steel; Low Alloy Steel; Carbon Steel; Low Carbon Steel; Maraging Steel
Material Notes:	Applications: Bearings, Belleville springs, bolts, cannon recoil springs, rocket motor and missiles cases, couplings, load cells, flexures for guidance mechanisms of missiles, helicopter drive shafts, transmission shafts, fan shafts in commercial jet engines, aircraft wing components and forgings, aluminum die casting dies, cold forming dies, plastic molding dies, cores, pins, punches, and trim knees.
Key Words:	maraging steels, UNS K92810, ASTM A538 (A), ASTM A579 grade 71
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Physical Properties	Original Value	Comments

Density	8.00 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	489	estimated, based on comparison with similar maraging steels.
Hardness, Knoop	542	estimated, based on comparison with similar maraging steels.
Hardness, Rockwell C	50	estimated, based on comparison with similar maraging steels.
Hardness, Vickers	522	estimated, based on comparison with similar maraging steels.
Tensile Strength, Ultimate	1723 MPa
Tensile Strength, Yield	1690 MPa	estimated, based on comparison with similar maraging steels.
Elongation at Break	8.0 %	estimated, based on comparison with similar maraging steels.
Reduction of Area	30 %	estimated, based on comparison with similar maraging steels.
Modulus of Elasticity	183 GPa
Bulk Modulus	160 GPa	Typical for steel
Poissons Ratio	0.30	Calculated
Shear Modulus	70.0 GPa	Estimated from elastic modulus

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

Thermal Properties	Original Value	Comments
CTE, linear	10.1 µm/m-°C @Temperature 21.0 - 480 °C
Thermal Conductivity	25.3 W/m-K @Temperature 20.0 °C
	25.8 W/m-K @Temperature 50.0 °C
	27.0 W/m-K @Temperature 100 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	0.10 %
Boron, B	0.0030 %
Carbon, C	<= 0.030 %
Cobalt, Co	8.5 %
Iron, Fe	69 %	As remainder
Manganese, Mn	<= 0.10 %
Molybdenum, Mo	3.25 %
Nickel, Ni	18.5 %
Phosphorus, P	<= 0.010 %
Silicon, Si	<= 0.10 %
Sulfur, S	<= 0.010 %
Titanium, Ti	0.20 %
Zirconium, Zr	0.010 %

References for this datasheet.

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M1820F / 7369

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