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Carbon	0.03 max
Iron	Balance
Manganese	0.1 max
Phosphorus	0.01 max
Silicon	0.1 max
Sulphur	0.01 max

Principal Design Features		Maraging 300 alloy is a very high strength iron base, nickel , molybdenum, cobalt alloy. It may be age hardened to a strength level of 300 ksi ultimate with a hardness on the order of Rockwell C 53.

Applications		Used for very high strength structural applications such as aircraft land gear components.

Machinability		Machinability is good, similar to that for 304 stainless steel.

Forming		Maraging 300 steel has good ductility and is readily formed by conventional methods.

Welding		The alloy is weldable by conventional methods, much the same as for 304 stainless steel.

Heat Treatment		Maraging steel is not heat treatable for hardening except by aging. See "Aging".

Forging		The alloy may be forged as for stainless 304 alloy.

Hot Working		Hot working of maraging steel may be done at temperatures in the 500 to 200 F range. Prolonged exposure at these temperatures may result in some age hardening. However a full aging treatment should be given.

Cold Working		The alloy is readily cold worked by conventional methods.

Annealing		Annealing, if required after cold working, can be done at 1900 F followed by rapid air cooling.

Aging		The high strength and hardness properties are a result of an aging heat treatment at 900 F

Tempering		Not applicable to this alloy.

Hardening		Maraging 300 hardens by cold working and by aging - see "Aging".

Physical Data : [top]

Density (lb / cu. in.)	0.289
Specific Gravity	8
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.108
Melting Point (Deg F)	2575
Thermal Conductivity	136
Mean Coeff Thermal Expansion	5.6
Modulus of Elasticity Tension	27.5

There is no Mechnical data available for this grade.

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Nickel - www.nidi.org

Copper - www.copper.org

Titanium - www.titanium.org

Steel Lynx - www.mlc.lib.mi.us/~stewarca/steelynx.html

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