IMI 679 Ti Alloy

IMI 679 Ti Alloy

Our advantages

IMI 679 properties and heat treatment forged piece, Including IMI 679 application and specifications, Including IMI 679 tube plate, IMI 679 Pipe Fitting, IMI 679 flange, IMI 679 Angle Bar,IMI 679 Valve,IMI 679 3d bend.

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Introduction to Our Products:

Specialized high quality steel

We have the advantages of equipment, technologies and price

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IMI 679 has the following specifications:

Valve:
Diameter : 1mm-1300mm

Steel pipe:
Size: OD: 9.5mm - 813mm WT: 0.8mm - 34mm Length: 1 - 13m, also can be customed.

Pipe fitting:
Size: 1/8 inch - 80 inch (DN6 - DN2000) WT: Sch5s - Sch160XXS

Flange:

Length:  Any length based on the customer's requirement.

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Chemical composition % of the ladle analysis of grade IMI 679 and Standards

Titanium IMI 679 (Ti-11Sn-5Zr-2.25Al-1Mo-0.25Si), Oil-Quenched and Aged
Categories: Metal; Nonferrous Metal; Titanium Alloy; Alpha/Near Alpha Titanium Alloy

Material Notes: Alpha Prime Transus 880ºC. Tensile Properties below after oil quench/aged heat treatment: 900°C/OQ, 500°C/24hr/AC.

Key Words: Ti11Sn5Zr2.25Al1Mo0.25Si

Physical Properties Metric English Comments
Density 4.84 g/cc 0.175 lb/in³
 
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 1110 MPa 161000 psi
Tensile Strength, Yield 970 MPa 141000 psi
Elongation at Break 8.00 % 8.00 %
Reduction of Area 25.0 % 25.0 %
Modulus of Elasticity 115 GPa 16700 ksi Typical value for an alpha titanium alloy
Poissons Ratio 0.310 0.310 Typical for alpha titanium alloy.
Fatigue Strength 110 MPa
@# of Cycles 1.00e+7 16000 psi
@# of Cycles 1.00e+7 Kt = 3.0; R = -1.0 (air-cooled and aged sample)
  200 MPa
@# of Cycles 50000 29000 psi
@# of Cycles 50000 Kt = 3.0; R = -1.0 (air-cooled and aged sample)
  390 MPa
@# of Cycles 1.00e+7 56600 psi
@# of Cycles 1.00e+7 (air-cooled and aged sample)
  590 MPa
@# of Cycles 50000 85600 psi
@# of Cycles 50000 (air-cooled and aged sample)
Shear Modulus 43.9 GPa 6370 ksi Calculated from typical values.
 
Electrical Properties Metric English Comments
Electrical Resistivity 0.000160 ohm-cm 0.000160 ohm-cm
 
Thermal Properties Metric English Comments
CTE, linear 8.60 µm/m-°C
@Temperature 20.0 °C 4.78 µin/in-°F
@Temperature 68.0 °F
  9.30 µm/m-°C
@Temperature 250 °C 5.17 µin/in-°F
@Temperature 482 °F
  10.0 µm/m-°C
@Temperature 500 °C 5.56 µin/in-°F
@Temperature 932 °F
Specific Heat Capacity 0.500 J/g-°C 0.120 BTU/lb-°F
Thermal Conductivity 8.30 W/m-K 57.6 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 450 °C 842 °F
Beta Transus 880 °C 1620 °F
 
Component Elements Properties Metric English Comments
Aluminum, Al 2.25 % 2.25 %
Molybdenum, Mo 1.0 % 1.0 %
Silicon, Si 0.25 % 0.25 %
Tin, Sn 11.0 % 11.0 %
Titanium, Ti 81.0 % 81.0 %
Zirconium, Zr 5.0 % 5.0 %

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MTA670 / 14134

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Machining performance

IMI 679 the mechanical properties of the report, the report provides detailed performance analysis and application.

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Principal Design Features

One of the most widely used precipitation hardening grades in the business. While soft and ductile in the solution annealed condition, it is capable of high properties with a single precipitation or aging treatment. Characterized by good corrosion resistance, high harness, toughness and strength.

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Machinability

Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to final hardening if machining in this condition.

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Heat Treatment

CONDITION A--Soak at 1900 F (1038 C) for 30 minutes and cool below 60 F (16 C) for complete martensite transformation. CONDITION H 950- Treat Condition A material at 900 F(482 C) for 1 hour, air cool.. CONDITION H925, H1025, H1075, H1100, H1150- Soak solution treated material for 4 hours at specified temperature, air cool, CONDITION H1150M- Soak solution treated material at 1400 F (760 C) for 2 hours, air cool, then re-heat to 1150 F (620 C) for 4 hours and air cool.

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Welding

Successfully welded by common fusion and resistance methods, this alloy should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.

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Forging

Soak for 1 hour at 2150 F (1177 C) prior to forging. Do not work below 1850 F (1010 C). Post-work solution treatment is required prior to final hardening.

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