Titanium Grade 1

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Titanium Grade 1
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium
Material Notes:	Information provided by Allvac and the references. Characteristics: Higher ductility, Lower strength, Greater corrosion resistance - when compared to alloys, Weldable Applications: Airframe components, cryogenic vessels, heat exchangers, CPI equipment, condenser tubing, pickling baskets. Forms typically available: billet, bar, plate, sheet, strip, rod, wire, extrusions, tubing. Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.
Key Words:	UNS R50250; ASTM Grade 1, CP titanium, C.P. titanium alloy
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Physical Properties	Original Value	Comments

Density	4.50 g/cc
a Lattice Constant	2.95 Å @Temperature 25.0 °C	alpha phase
	3.29 Å @Temperature 900 °C	beta phase
c Lattice Constant	4.683 Å @Temperature 25.0 °C	c/a = 1.587

Chemical Properties	Original Value	Comments
Thermal Neutron Cross Section	5.6 barns/atom	Average for naturally occurring Ti

Mechanical Properties	Original Value	Comments
Hardness, Brinell	120	annealed
Hardness, Knoop	132	Estimated from Brinell.
Hardness, Rockwell B	70	annealed
Hardness, Vickers	122	Estimated from Brinell.
Tensile Strength	124 - 138 MPa @Temperature 427 °C
	152 - 179 MPa @Temperature 316 °C
	193 - 207 MPa @Temperature 204 °C
Tensile Strength, Ultimate	240 MPa
Tensile Strength, Yield	170 - 310 MPa
	76.0 - 90.0 MPa @Temperature 427 °C	0.2% offset
	83.0 - 103 MPa @Temperature 316 °C	0.2% offset
	110 - 124 MPa @Temperature 204 °C	0.2% offset
Elongation at Break	24 %
	25 - 30 % @Temperature 427 °C
	30 - 35 % @Temperature 316 °C
	40 - 50 % @Temperature 204 °C
Reduction of Area	35 %
Tensile Modulus	103 GPa
Compressive Modulus	110 GPa
Poissons Ratio	0.37
Shear Modulus	45.0 GPa
Charpy Impact	310 J	V-notch
Impact Test	100 ft-lb	Impact Strength
Coefficient of Friction, Dynamic	0.68	Ti sliding on Ti; 300 m/min
	0.80	Ti sliding on Ti; 40 m/min

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000420 ohm-cm
Magnetic Permeability	1.00005	at 1.6 kA/m
Magnetic Susceptibility	3.98e-8	1/kg; Paramagnetic

Thermal Properties	Original Value	Comments
Heat of Fusion	325 J/g	High Purity Ti.
CTE, linear	8.35 µm/m-°C @Temperature 15.0 °C
	8.70 µm/m-°C @Temperature 100 °C
	9.50 µm/m-°C @Temperature 300 °C
	9.70 µm/m-°C @Temperature 0.000 - 540 °C	perpendicular to the c-axis
Specific Heat Capacity	0.520 J/g-°C
	0.560 J/g-°C @Temperature 200 °C
	0.620 J/g-°C @Temperature 400 °C
	0.690 J/g-°C @Temperature 600 °C
Thermal Conductivity	16.0 W/m-K	annealed
Melting Point	<= 1670 °C
Liquidus	1670 °C
Beta Transus	882 °C

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.30 @Temperature 710 °C	High purity Ti
Reflection Coefficient, Visible (0-1)	0.56	High purity Ti; visible light.

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.10 %
Hydrogen, H	<= 0.015 %
Iron, Fe	<= 0.20 %
Nitrogen, N	<= 0.030 %
Other, total	<= 0.30 %
Oxygen, O	<= 0.18 %
Titanium, Ti	>= 99.175 %

Descriptive Properties
Alpha Phase Crystal Structure	cph, below 882°C
Beta Phase Crystal Structure	bcc, above 882°C

References for this datasheet.

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