Special Metals UDIMARÂ® alloy 300 Fe-Ni Maraging Steel

Category	Metal , Ferrous Metal , Maraging Steel
Manufacturer	Special Metals (includes the former Inco Alloys International Inc.)
Trade Name	UDIMAR®
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Special Metals UDIMARÂ® alloy 300 Fe-Ni Maraging Steel.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

UDIMARÂ® alloy 300 (UNS K93120) is an age-hardenable (maraging) iron-nickel steel combining ultra-high strength, toughness and resistance to crack propagation. The alloy is well suited to applications where heat treatment distortion and dimensional changes much be minimized and where high fracture toughness is required, such as rocket motor casings, light aircraft landing gear, power shafts and low temperature tooling.The 18% nickel maraging steels offer a unique combination of properties not available from conventional low alloy ultra-high strength steels. They offer high strength, high ductility and toughness, and resistance to crack propagation. Hardening is accomplished by a simple aging cycle of 3 hours at 900Â°F (482Â°C) followed by air cooling. UDIMAR alloy 300 provides through hardening without quenching, freedom from decarburization, minimal distortion during aging, good formability, machinability, and weldability and a low coefficient of thermal expansion.Information Provided by Special Metals Corporation

Physical Properties	Metric	English	Comments
Density	8.00 g/cc	0.289 lb/inÂ³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	30 @Temperature 816 Â°C, Time 3600 sec	30 @Temperature 1500 Â°F, Time 1.00 hour	Solution Annealed, AC
	52 @Temperature 482 Â°C, Time 10800 sec	52 @Temperature 900 Â°F, Time 3.00 hour	Solution Annealed Plus Aged, AC
Tensile Strength, Ultimate	1030 MPa @Temperature 816 Â°C, Time 3600 sec	150000 psi @Temperature 1500 Â°F, Time 1.00 hour	Solution Annealed, AC
	2000 MPa @Temperature 482 Â°C, Time 10800 sec	290000 psi @Temperature 900 Â°F, Time 3.00 hour	Solution Annealed Plus Aged, AC
Tensile Strength, Yield	827 MPa @Strain 0.200 %, Temperature 816 Â°C	120000 psi @Strain 0.200 %, Temperature 1500 Â°F	Solution Annealed, AC
	1930 MPa @Strain 0.200 %, Temperature 482 Â°C	280000 psi @Strain 0.200 %, Temperature 900 Â°F	Solution Annealed Plus Aged, AC
	827 MPa @Strain 0.200 %, Time 3600 sec	120000 psi @Strain 0.200 %, Time 1.00 hour	Solution Annealed, AC
	1930 MPa @Strain 0.200 %, Time 10800 sec	280000 psi @Strain 0.200 %, Time 3.00 hour	Solution Annealed Plus Aged, AC
Elongation at Break	8.0 % @Temperature 482 Â°C, Time 10800 sec	8.0 % @Temperature 900 Â°F, Time 3.00 hour	Solution Annealed Plus Aged, AC
	16 % @Temperature 816 Â°C, Time 3600 sec	16 % @Temperature 1500 Â°F, Time 1.00 hour	Solution Annealed, AC
Reduction of Area	40 % @Temperature 482 Â°C, Time 10800 sec	40 % @Temperature 900 Â°F, Time 3.00 hour	Solution Annealed Plus Aged, AC
	70 % @Temperature 816 Â°C, Time 3600 sec	70 % @Temperature 1500 Â°F, Time 1.00 hour	Solution Annealed, AC

Thermal Properties	Metric	English
CTE, linear	8.64 Âµm/m-Â°C @Temperature 93.0 Â°C	4.80 Âµin/in-Â°F @Temperature 199 Â°F
Specific Heat Capacity	0.335 J/g-Â°C	0.0801 BTU/lb-Â°F
Thermal Conductivity	19.6 W/m-K	136 BTU-in/hr-ftÂ²-Â°F
Melting Point	1427 - 1454 Â°C	2601 - 2649 Â°F
Solidus	1427 Â°C	2601 Â°F
Liquidus	1454 Â°C	2649 Â°F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.050 - 0.15 %	0.050 - 0.15 %
Carbon, C	<= 0.030 %	<= 0.030 %
Cobalt, Co	8.0 - 9.5 %	8.0 - 9.5 %
Iron, Fe	65.1 - 68.8 %	65.1 - 68.8 %	Balance
Manganese, Mn	<= 0.10 %	<= 0.10 %
Molybdenum, Mo	4.6 - 5.2 %	4.6 - 5.2 %
Nickel, Ni	18 - 19 %	18 - 19 %
Phosphorous, P	<= 0.010 %	<= 0.010 %
Silicon, Si	<= 0.10 %	<= 0.10 %
Sulfur, S	<= 0.010 %	<= 0.010 %
Titanium, Ti	0.55 - 0.80 %	0.55 - 0.80 %

Electrical Properties	Metric	English	Comments
Magnetic Permeability	77.5	77.5	at 200 oersted (15.9 kA/m)

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