Titanium Grade 12, Annealed

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Titanium Grade 12, Annealed
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium
Material Notes:	Addition of 0.3% Mo and 0.8% Ni to titanium increases corrosion resistance at a lower cost than Pd (see Ti Grades 7 and 11). Sample was annealed 20 min. at 815°C and 5 min. at 788°C. Higher strength than unalloyed Ti grades 1 - 4, yet still formable. Microstructure: Equiaxed alpha, with acicular alpha, primarily in welds or heat-affected zones, small amounts of beta. Applications: Chemical processing, in mildly reducing or variable oxidizing-reducing media - containers, heat exchangers, pumps, valves, pipes and fittings. Forms typically available: billet, bar, rod, plate, sheet, strip and tubing. Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.
Key Words:	UNS R53400; ASTM Grade 12, 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
Tensile Strength	345 MPa @Temperature 316 °C	50000 psi @Temperature 601 °F
Tensile Strength, Ultimate	620 MPa	89900 psi
Tensile Strength, Yield	480 MPa	69600 psi
Elongation at Break	23 %	23 %
Creep Strength	103 MPa @Temperature 316 °C, Time >=3.60e+6 sec	14900 psi @Temperature 601 °F, Time >=1000 hour	strain 0.3%
Rupture Strength	276 MPa @Temperature 316 °C, Time 3.60e+6 sec	40000 psi @Temperature 601 °F, Time 1000 hour
Tensile Modulus	103 GPa	14900 ksi
Modulus of Rigidity	41.3 GPa	5990 ksi
Notched Tensile Strength	620 MPa	89900 psi	K_t (stress concentration factor) = 5.3
Poissons Ratio	0.28	0.28
Fatigue Strength	140 MPa @# of Cycles 1.00e+7	20300 psi @# of Cycles 1.00e+7	K_t (stress concentration factor) = 3.5
	310 MPa @# of Cycles 1.00e+7	45000 psi @# of Cycles 1.00e+7	unnotched
Shear Modulus	41.0 GPa	5950 ksi
Bend Radius, Minimum	2.5 t @Thickness >=1.80 mm	2.5 t @Thickness >=0.0709 in

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000520 ohm-cm	0.0000520 ohm-cm

Thermal Properties	Metric	English	Comments
Heat of Fusion	325 J/g	140 BTU/lb	High Purity Ti.
CTE, linear	9.50 µm/m-°C @Temperature 200 °C	5.28 µin/in-°F @Temperature 392 °F
	9.90 µm/m-°C @Temperature 20.0 - 93.0 °C	5.50 µin/in-°F @Temperature 68.0 - 199 °F
	19.9 µm/m-°C @Temperature 20.0 °C	11.1 µin/in-°F @Temperature 68.0 °F	perpendicular
Specific Heat Capacity	0.555 J/g-°C	0.133 BTU/lb-°F
Thermal Conductivity	19.0 W/m-K	132 BTU-in/hr-ft²-°F
Melting Point	<= 1660 °C	<= 3020 °F
Liquidus	1660 °C	3020 °F
Beta Transus	890 °C	1630 °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	<= 0.080 %	<= 0.080 %
Hydrogen, H	<= 0.015 %	<= 0.015 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Molybdenum, Mo	0.20 - 0.40 %	0.20 - 0.40 %
Nickel, Ni	0.60 - 0.90 %	0.60 - 0.90 %
Nitrogen, N	<= 0.030 %	<= 0.030 %
Other, each	<= 0.050 %	<= 0.050 %
Other, total	<= 0.30 %	<= 0.30 %
Oxygen, O	<= 0.25 %	<= 0.25 %
Titanium, Ti	97.725 - 99.2 %	97.725 - 99.2 %	As Balance; Elemental Composition per ASTM B265

References for this datasheet.

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