Titanium IMI 829 (Ti-5.5Al-3.5Sn-3Zr-1Nb-0.25Mo-0.3Si)

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Titanium IMI 829 (Ti-5.5Al-3.5Sn-3Zr-1Nb-0.25Mo-0.3Si)
Categories:	Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy
Material Notes:	Heat treatment: Beta heat treated at 1050 °C, Air Cooled and aged 2 hours at 625 °C Characteristics: Near-alpha alloy, medium strength, good high temperature properties, high creep resistance. Applications: Aerospace - engine compressors, discs and blades.
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Physical Properties	Original Value	Comments

Density	4.54 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	32
Hardness, Vickers	320 @Load 20.0 kg
Tensile Strength	>= 930 MPa
Tensile Strength, Yield	>= 820 MPa	0.2% offset
Elongation at Break	>= 9.0 %	on 5D
Reduction of Area	15 %
Tensile Modulus	85.0 GPa @Temperature 600 °C	dynamic
	110 GPa @Temperature 200 °C	dynamic
	125 GPa @Temperature 23.0 °C	dynamic
Fracture Toughness	75.0 MPa-m½

Thermal Properties	Original Value	Comments
CTE, linear	9.45 µm/m-°C @Temperature 20.0 - 205 °C
	9.80 µm/m-°C @Temperature 20.0 - 425 °C
	9.98 µm/m-°C @Temperature 20.0 - 650 °C
Specific Heat Capacity	0.516 J/g-°C
Thermal Conductivity	6.90 W/m-K
Maximum Service Temperature, Air	550 °C
Beta Transus	1015 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.6 %
Hydrogen, H	<= 0.0060 %
Molybdenum, Mo	0.25 %
Niobium, Nb (Columbium, Cb)	1.0 %
Nitrogen, N	<= 0.030 %
Oxygen, O	0.090 - 0.15 %
Silicon, Si	0.30 %
Tin, Sn	>= 3.5 %
Titanium, Ti	86 %
Zirconium, Zr	3.0 %

References for this datasheet.

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MTA829 / 142958

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