Principal Design Features		This near beta alloy is generally intended for high temperature use in environments up to 538 C(1000 F).It is only available at the producer level in bar, billet, sheet and plate. Beta Transus (F +/- 25) 1820.

Applications		Typical applications include "hot section" gas turbine components such as discs, impellers, turbines, etc. It is also employed in a variety of sheet metal components such as afterburner cans and hot airframe components.

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 "fair in terms of weldability.

Heat Treatment		Solution treat at beta minus 14 C(25 F).

Forging		Rough forge at 1038-1066 C(1930-1980 F), finish at 954-982 C(1770-1825 F).

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		Duplex anneal at 900 C(1670 F) for 1/2 hour, air cool to 788 C(1465 F) for 1/4 hour, air cool. Beta anneal at 1024 C(1900 F) for 1/2-1 hour, air cool to 593 C(1100 F), hold for 8 hours and air cool.

Aging		Hold at 538-593 C(1000-1100 F) for 8 hours, air cool.

Other Physical Props		Beta Transus (F +/- 25) 1820

Physical Data : [top]

Density (lb / cu. in.)	0.164
Specific Gravity	4.54
Electrical Resistivity (microhm-cm (at 68 Deg F))	191
Melting Point (Deg F)	3100
Modulus of Elasticity Tension	16.5
Reduction of Area	25

Form		Sheet
Condition		Test Specimen Annealed
Temper		70
Tensile Strength		130
Yield Strength		120
Elongation		10
Reduction of Area		25
Form		Sheet
Condition		Test Specimen Annealed
Temper		600
Tensile Strength		95
Yield Strength		75
Elongation		15
Reduction of Area		40
Form		Sheet
Condition		Test Specimen Annealed
Temper		800
Tensile Strength		85
Yield Strength		70
Elongation		20
Reduction of Area		55
Form		Sheet
Condition		Test Specimen Annealed
Temper		1000
Tensile Strength		75
Yield Strength		60
Elongation		25
Reduction of Area		65