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Carbon		0.05 max
Chromium		11 - 12.5
Copper		1.5 - 2.5
Iron		Balance
Manganese		0.5 max
Molybdenum		0.5 max
Nickel		7.5 - 9.5
Niobium		0.1 - 0.5
Phosphorus		0.04 max
Silicon		0.5 max
Sulphur		0.03 max
Titanium		0.8 - 1.4

Principal Design Features		This alloy is a martensitic stainless that combines corrosion resistance similar to 304, easy fabrication and one step age hardenability yielding strength characteristics similar to martensitic stainless'. It possesses a yield strength that is roughly 3 times the strength of standard 304 stainless. This alloy is extremely stable during heat treating so it can be machined to close tolerance prior to aging.

Applications		Generally employed in applications where standard austenitics fail in terms of strength requirements in corrosive environments and martensitics fail in terms of corrosion resistance. It effectively brings together the best of both worlds.

Machinability		Utilize speeds and feeds comparable with other martensitic stainless steels. Positive feeds and slow speeds will yield best results.

Welding		It is not necessary to preheat this material and both resistance and shielded fusion methods have been commonly employed. It is recommended, for best properties, that material be aged after welding, although this may not be necessary depending on the end use.

Hot Working		Soak material at 2100-2150 F(1150-1177 C), air cool after working and fully anneal.

Cold Working		With a relatively low work hardening rate, this alloy may be effectively cold worked using most common methods.

Annealing		Soak thoroughly at 1875-7925 F(1024-1052 C) for 1 hour, water or oil quench.

Aging		To obtain condition H900, H950, H1000, H1050 or H1150, soak material at desired temperature for 4 hours and air cool.

Physical Data : [top]

Density (lb / cu. in.)	0.28
Specific Gravity	7.75
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.11
Electrical Resistivity (microhm-cm (at 68 Deg F))	597
Modulus of Elasticity Tension	28

MSO currently has no data available for this grade.