IMI 679
IMI 679 properties and heat treatment forged piece, Including IMI 679 application and specifications, We have all specifications，Including IMI 679 steel plate, IMI 679 sheet, IMI 679 square steel, IMI 679 flat bar,IMI 679 round bar,IMI 679 forgings, we can own production and sales.
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We can produce the IMI 679 has the following specifications:
Round bar steel: 1mm to 3000mm
Square-shape steel: 1mm to 2000mm
Plate steel:0.1mm to 2500mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-219 mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
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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
Machining performance
Download IMI 679 the mechanical properties of the report, the report provides detailed performance analysis and application. Download >>
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.
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.
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.
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.
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.