AISI Grade 18Ni (300) Maraging Steel solution treated at 815°C (1500°F) for 15 minutes, air cooled, aged at 480°C (900°F) for 3 hours, 0.64 mm sheet

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AISI Grade 18Ni (300) Maraging Steel solution treated at 815°C (1500°F) for 15 minutes, air cooled, aged at 480°C (900°F) for 3 hours, 0.64 mm sheet
Categories:	Metal; Ferrous Metal; 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:	UNS K93120, ASTM A538 (C), ASTM A579 grade 73, 18Ni300
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Physical Properties	Original Value	Comments

Density	8.00 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	2041 MPa
Tensile Strength, Yield	2027 MPa @Strain 0.2 %
Elongation at Break	1.0 %	in 50 mm
	2.0 %	in 25 mm.
Modulus of Elasticity	190 GPa
Bulk Modulus	160 GPa	Typical for steel.
Poissons Ratio	0.30	Calculated
Shear Modulus	73.0 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	9.0 %
Iron, Fe	67 %	As remainder
Manganese, Mn	<= 0.10 %
Molybdenum, Mo	4.8 %
Nickel, Ni	18.5 %
Phosphorus, P	<= 0.010 %
Silicon, Si	<= 0.10 %
Sulfur, S	<= 0.010 %
Titanium, Ti	0.60 %
Zirconium, Zr	0.010 %

References for this datasheet.

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M1830R / 7409

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