Titanium Grade 7, Annealed

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Titanium Grade 7, Annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium
Material Notes:	Titanium Grade 11 is identical (0.2% Pd) except for impurity limits. Sample was annealed 2 hr at 700°C. Pd added for corrosion resistance, very effective for improving crevice corrosion at elevated temperatures and where in contact with mildly reducing or variable oxidizing-reducing media. Properties are very similar to Ti Grade 2, addition of small amount of Pd does not significantly change microstructure. Applications: Chemical processing and storage - containers, heat exchangers, ducting, pumps, valves, fittings and auxiliary equipment. 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:	ASTM Grade 7; UNS R52400, CP titanium, C.P. titanium alloy
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Physical Properties	Metric	English	Comments

Density	4.50 g/cc	0.163 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	200	200
Hardness, Knoop	222	222	Estimated from Brinell.
Hardness, Rockwell B	98	98
Hardness, Rockwell C	11	11	Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers	209	209	Estimated from Brinell.
Tensile Strength	186 MPa @Temperature 316 °C	27000 psi @Temperature 601 °F
Tensile Strength, Ultimate	430 MPa	62400 psi
Tensile Strength, Yield	340 MPa	49300 psi
Elongation at Break	28 %	28 %
Rupture Strength	>= 138 MPa @Temperature 316 °C, Time 3.60e+6 sec	>= 20000 psi @Temperature 601 °F, Time 1000 hour
Tensile Modulus	103 GPa	14900 ksi
Modulus of Rigidity	38.6 GPa	5600 ksi
Compressive Yield Strength	340 MPa	49300 psi
Compressive Modulus	110 GPa	16000 ksi
Notched Tensile Strength	720 MPa	104000 psi	K_t (stress concentration factor) = 3.0
Ultimate Bearing Strength	930 MPa	135000 psi	e/D = 2
Bearing Yield Strength	660 MPa	95700 psi	e/D = 2
Poissons Ratio	0.34	0.34
Fatigue Strength	240 MPa @# of Cycles 1.00e+7	34800 psi @# of Cycles 1.00e+7	K_t (stress concentration factor) = 2.7
	280 MPa @# of Cycles 1.00e+7	40600 psi @# of Cycles 1.00e+7	Unnotched
Shear Modulus	39.0 GPa	5660 ksi
Shear Strength	380 MPa	55100 psi	Ultimate shear strength
Charpy Impact	65.0 J	47.9 ft-lb	V-notch
Bend Radius, Minimum	2.5 t @Thickness >=1.80 mm	2.5 t @Thickness >=0.0709 in

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000550 ohm-cm	0.0000550 ohm-cm

Thermal Properties	Metric	English	Comments
Heat of Fusion	325 J/g	140 BTU/lb	High Purity Ti.
CTE, linear	8.60 µm/m-°C @Temperature 20.0 - 93.0 °C	4.78 µin/in-°F @Temperature 68.0 - 199 °F
	9.20 µm/m-°C @Temperature 200 °C	5.11 µin/in-°F @Temperature 392 °F
	19.9 µm/m-°C @Temperature 20.0 °C	11.1 µin/in-°F @Temperature 68.0 °F	perpendicular
Specific Heat Capacity	0.523 J/g-°C	0.125 BTU/lb-°F
Thermal Conductivity	16.4 W/m-K	114 BTU-in/hr-ft²-°F
Melting Point	<= 1665 °C	<= 3029 °F
Liquidus	1665 °C	3029 °F
Maximum Service Temperature, Air	425 °C	797 °F	Continuous use
	540 °C	1000 °F	Intermittent Use
Beta Transus	913 °C	1680 °F

Optical Properties	Metric	English	Comments
Emissivity (0-1)	0.30 @Temperature 710 °C	0.30 @Temperature 1310 °F	High purity Ti
Reflection Coefficient, Visible (0-1)	0.56	0.56	High purity Ti; visible light.

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.10 %	<= 0.10 %
Hydrogen, H	<= 0.015 %	<= 0.015 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Nitrogen, N	<= 0.030 %	<= 0.030 %
Other, each	<= 0.050 %	<= 0.050 %
Other, total	<= 0.30 %	<= 0.30 %
Oxygen, O	<= 0.25 %	<= 0.25 %
Palladium, Pd	0.12 - 0.25 %	0.12 - 0.25 %
Titanium, Ti	99 - 99.8 %	99 - 99.8 %	As remainder

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MTU071 / 14266

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