Aluminum	0.8 - 1.5
Carbon	0.16 - 0.24
Chromium	17 - 19.5
Iron	Balance
Manganese	2 max
Nickel	13.5 - 16
Phosphorus	0.03 max
Silicon	3.2 - 4
Sulphur	0.03 max

Principal Design Features		This high silicon alloy combines resistance to carburization, oxidation, sulfidation and hot salt corrosion with good strength and fabricability.

Applications		Initially used in primarily the heat treating industry, this alloy is becoming popular with a variety of other applications including coal conversion and incineration equipment. With twice the creep strength of standard 310s, it is a good choice for hostile environments with its resistance to hot corrosives.

Machinability		This alloy, due to its' alloy content can be tough to machine. Slow speeds, constant feeds and abundant lubricant will optimize success in all operations.

Forming		This alloy will exhibit characteristics similar to austenitic stainless steels. It can be successfully formed using all common methods.

Welding		The high level of silicon in this alloy requires the use of great care to achieve sound welds. For GMAW welding, do not add oxygen in the shielding gas and keep interpass temperatures below 300 F(150 C). For GTAW, use argon shielding gas with 25% helium added for manual operations. Choice of filler metal should consider the need for ferrite deposition in the weld bead. For spray arc transfer methods, 80% minimum argon is required. Keep interpass temperatures under 212 F(100 C) and use the lowest inputs necessary to remain in the spray arc transfer range. Preheating and postweld annealing is not required with this material.

Annealing		Soak at 2050 F(1120 C), water quench. For stress relieving, heat to 1850 F(1010 C), furnace cool till black then air cool.

Hardening		This alloy will not harden in response to thermal treatment.

Physical Data : [top]

Density (lb / cu. in.)	0.274
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.1
Electrical Resistivity (microhm-cm (at 68 Deg F))	616
Modulus of Elasticity Tension	28.5

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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