TIMET TIMETAL® 65A CP Titanium (ASTM Grade 3)

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TIMET TIMETAL® 65A CP Titanium (ASTM Grade 3)
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium
Material Notes:	Commercially Pure Titanium. Industry Specifications: USA Aerospace: AMS 4900. Germany Aerospace: 3.7055. France: T-50. UK Aerospace Specification DTD 5023, 5273. Features: The mechanical properties of CP titanium are influenced by small additions of oxygen and iron. By careful control of these additions, the various grades of commercially pure titanium are produced to give properties suited to different applications. TIMETAL 65A is equivalent to ASTM Grade 3. It is a general purpose grade of commercially pure titanium that has excellent corrosion resistance in highly oxidizing to mildly reducing environments, including chlorides, and an excellent strength to weight ratio. It offers the highest ASME allowable design stresses of any commercially pure grade of titanium. 65A also has good impact properties at low temperatures. It can be satisfactorily welded, machined, cold worked, hot worked, and cast. It is nonmagnetic. Typical heat treatment for this alloy: Anneal at 700°C for 1 hour and air cool. Stress Relieve at 500°C for 30 mins and air cool. Data provided by TIMET.
Key Words:	UNS R50550
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Physical Properties	Original Value	Comments

Density	4.51 g/cc	Typical

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	585 MPa	Typical
	174 MPa @Temperature 450 °C
	195 MPa @Temperature 400 °C
	250 MPa @Temperature 300 °C
	327 MPa @Temperature 200 °C
	438 MPa @Temperature 100 °C
Tensile Strength, Yield	450 MPa @Strain 0.2 %	Typical
	92.0 MPa @Strain 0.2 %, Temperature 450 °C
	101 MPa @Strain 0.2 %, Temperature 400 °C
	129 MPa @Strain 0.2 %, Temperature 300 °C
	195 MPa @Strain 0.2 %, Temperature 200 °C
	283 MPa @Strain 0.2 %, Temperature 100 °C
Elongation at Break	25 %	Typical
	31 % @Temperature 100 °C
	33 % @Temperature 400 °C
	36 % @Temperature 200 °C
	39 % @Temperature 300 °C
Reduction of Area	48 %	Typical
Modulus of Elasticity	105 - 120 GPa	Typical
Fatigue Strength	116 MPa @# of Cycles 1.00e+7	Notched, Kt=4; rotating bend (sample with UTS = 589 MPa)
	116 MPa @# of Cycles 1.00e+7	Notched, Kt=3.3; rotating bend (sample with UTS = 550 MPa)
	123 MPa @# of Cycles 1.00e+7	Notched, Kt=3; rotating bend (sample with UTS = 589 MPa)
	147 MPa @# of Cycles 1.00e+7	Notched, Kt=2; rotating bend (sample with UTS = 589 MPa)
	170 MPa @# of Cycles 1.00e+7	Notched, Kt=2; rotating bend (sample with UTS = 550 MPa)
	247 MPa @# of Cycles 1.00e+7	Notched, Kt=1.5; rotating bend (sample with UTS = 550 MPa)
	263 MPa @# of Cycles 1.00e+7	Smooth, Kt=1; rotating bend (sample with UTS = 550 Mpa)
	278 MPa @# of Cycles 1.00e+7	Smooth, Kt=1; rotating bend (sample with UTS = 589 Mpa)
Bend Radius, Minimum	2.5 t @Thickness 2.00 mm	Typical; sheet

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000540 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 100 °C
	9.50 µm/m-°C @Temperature 20.0 - 300 °C
	9.70 µm/m-°C @Temperature 20.0 - 500 °C
Thermal Conductivity	21.79 W/m-K
Maximum Service Temperature, Air	425 °C	Continuous
	540 °C	Intermittent
Beta Transus	920 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.080 %
Hydrogen, H	<= 0.015 %
Iron, Fe	<= 0.30 %
Nitrogen, N	<= 0.050 %
Oxygen, O	<= 0.35 %
Titanium, Ti	>= 98.8 %	As Remainder

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NTIME65A / 19333

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