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Carbon		0.1 max
Hydrogen		0.015 max
Iron		0.5 max
Nitrogen		0.05 max
Oxygen		0.4 max
Titanium		Balance

Principal Design Features		Grade 4 displays the highest strength of all the unalloyed grades. It combines excellent corrosion resistance with good formability and weldability. While mill availability is not a problem, distributor availability is limited and should be a consideration in alloy selection. Beta Transus (F +/- 25) 1740.

Applications		Generally chosen for its corrosion resistance in a variety of chemical process equipment as well as marine and airframe 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		May be hot or cold formed using hydropress, power brake, stretch or drop hammer methods. Similar in characteristics to 300 series stainless steels.

Welding		Rated as "good" in terms of weldability.

Heat Treatment		Not hardenable by heat treatment.

Forging		Roughing operations can begin at 935 C (1715 F),while finishing should be performed at 843 C(1550 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 work characteristics of this material is similar to that of a moderately tempered austenitic stainless steel. In multiple cold forming operations, intermediate stress relief is recommended to prevent tearing or other material damage. Post-work annealing is required to reattain optimum performance characteristics.

Annealing		Heat to 704 C (1300 F),hold for 2 hours follow by air cooling. For intermediate stress relieving, heat to 482-538 C(900-1000 F) and hold for 45 minutes.

Other Physical Props		Beta Transus (F +/- 25) 1740

Physical Data : [top]

Density (lb / cu. in.)	0.163
Specific Heat (Btu/lb/Deg F - [32-212 Deg F])	0.129
Electrical Resistivity (microhm-cm (at 68 Deg F))	60
Melting Point (Deg F)	3020
Thermal Conductivity	9.8
Modulus of Elasticity Tension	15.1
Reduction of Area	25

Form		Sheet
Condition		Test Specimen Annealed
Temper		70
Tensile Strength		80
Yield Strength		70
Elongation		15
Reduction of Area		25
Form		Sheet
Condition		Test Specimen Annealed
Temper		600
Tensile Strength		44
Yield Strength		24
Elongation		18
Reduction of Area		75
Form		Sheet
Condition		Test Specimen Annealed
Temper		1000
Tensile Strength		27
Yield Strength		16
Elongation		29
Reduction of Area		75