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Aluminum		5.5 - 6.5
Carbon		0.04 max
Hydrogen		0.0125 max
Iron		0.15 max
Molybdenum		5.5 - 6.5
Nitrogen		0.04 max
Oxygen		0.15 max
Tin		1.75 - 2.25
Titanium		Balance
Zirconium		3.5 - 4.5

Principal Design Features		This is a heat treatable, alpha-beta alloy which was designed primarily for high temperature applications requiring higher strength than alloy 6-2-4-2 at similar temperatures. It combines good corrosion resistance and strength with weldability and fabricability. The alloy is generally available at the mill level in bar and billet form.

Applications		Generally selected over 6-2-4-2 for applications requiring strength at temperatures up to 454 C(850 F). Found in gas turbine discs and impellers and has been evaluated for use in deep sour well applications.

Machinability		As a family, titanium and its alloys have developed a mystique as a nightmare to machine. This is simply not the case. Experienced operators have compared its characteristics to those found in 316 stainless steel. Recommended practice includes high coolant flow(to offset the material's low thermal conductivity), slow speeds and relatively high feed rates. Tooling should be tungsten carbide designations C1-C4 or cobalt type high speed tools.

Forming		This alloy can be hot or cold formed and will exhibit characteristics equivalent to those found in a 1/8 to 1/4 hard austenitic stainless steel.

Welding		Rated as" limited" in terms of weldability.

Heat Treatment		Solution treat at 843-913 C(1550-1675 F), air, oil or water quench.

Forging		Work at 843-927 C(1565-1725 F) from bar and billet.

Hot Working		Hot forming will reduce both the springback and required forming forces, and will increase the overall ductility of the material.

Cold Working		The cold working characteristics of this alloy are similar to those found in austenitic stainless steels. In multiple forming operations, intermediate stress relieving is recommended to offset the alloy's tendency to work harden. Post-work annealing is recommended to reattain maximum performance characteristics.

Annealing		Triplex-Beta minus 14 C(25 F), 1-2 hours, air cool, plus 801-857 C(1490-1595 F), 1-4 hours, air cool plus 593 C(1100 F) 4-8 hours, air cool. For stress relief, heat to 482-649 C(900-1200 F), hold for 1-4 hours and air cool.

Aging		Hold at 579-607 C(1075-1125 F) for 8 hours and air cool.

Other Physical Props		Beta Transus (F+/- 25) 1710

Physical Data : [top]

Density (lb / cu. in.)	0.169
Specific Gravity	4.65
Melting Point (Deg F)	1635
Thermal Conductivity	4.1
Modulus of Elasticity Tension	16

Form		Sheet
Condition		Solution Annealed & Aged
Temper		70
Tensile Strength		170
Yield Strength		160
Elongation		10
Reduction of Area		20
Form		Sheet
Condition		Test Specimen Annealed
Temper		600
Tensile Strength		150
Yield Strength		125
Elongation		10
Reduction of Area		30
Form		Sheet
Condition		Test Specimen Annealed
Temper		800
Tensile Strength		140
Yield Strength		110
Elongation		10
Reduction of Area		30
Form		Sheet
Condition		Test Specimen Annealed
Temper		900
Form		Sheet
Condition		Test Specimen Annealed
Temper		1000
Tensile Strength		125
Yield Strength		95
Elongation		15
Reduction of Area		50