12 Years Factory wholesale Titanium alloy 6Al-4V UNS R56400 Wholesale to Malawi
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HY Titanium 6-4 Material grades and equivalents
6-4 Titanium, 6-4, Ti 6-4, UNS R56400
Introduction
HY Titanium 6-4 is the most widely used of all the alpha-beta titanium alloys. It is typically used in the annealed condition, at service temperatures through 750°F. However it may be heat treated for high strength in sections under 4″ thick. Hardenability is limited and sections over one inch may not develop full properties. HY Titanium 6-4 is welded with matching or with ELI filler wire.
Mill anneal: 1300-1450°F 2 hours, air cool. Recrystallization anneal bar for better ductility and fatigue strength, 1750°F 2 hours, furnace cool.
For maximum fracture toughness and SCC resistance: Beta anneal 1950°F 1-2 hours, water quench. Then age 1150-1300°F 2 to 4 hours, air cool.
For maximum strength: solution-treated and aged (STA) condition is: For sheet, 1675-1725°F 5 to 25 minutes, water quench. Age 975°F 4 to 6 hours, air cool. For bars and forgings, 1675-1725°F 1 hour, water quench. Age 975-1025°F 3 hours, air cool.
For increased fracture toughness, but lower tensile strength: precipitation treat (overage) 1150-1250°F 4 hours, air cool. Stress relief annealing is commonly 1000-1200°F 1 to 4 hours, air cool.
HY Titanium 6-4 is resistant to general corrosion but may be quickly attacked by environments that cause breakdown of the protective oxide. These include hydrofluoric (HF), hydrochloric (HCl), sulfuric and phosphoric acids. Inhibitors may help for the last four but not for HF. HY Titanium 6-4 resists attack by pure hydrocarbons, and most chlorinated and fluorinated hydrocarbons (provided water has not caused formation of small amounts of HCl and HF).
HY Titanium 6-4 is susceptible to chloride stress corrosion cracking (SCC), although being among the better of the titanium alloys in this regard. For marine environments silver plated bolts are not used, as silver bonds easily with chlorine in this environment. HY Titanium 6-4 is also susceptible to SCC in environments such as methyl alcohol, red fuming HNO3, and N2O4. In the case of red fuming nitric acid, the problem is limited to environments containing less than 1.5% water, or more than 6% NO2. Failure in N2O4 has occurred when oxygen and chlorides were present as impurities.
Chemistry Composition
Al |
V |
C |
N |
O |
H |
Fe |
Y |
Others, |
Others, |
Ti |
|
MIN |
5.5 |
3.5 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
MAX |
6.75 |
4.5 |
0.08 |
0.05 |
0.2 |
0.0125 |
0.3 |
0.005 |
0.1 |
0.4 |
Balance |
Features
High strength to 600°FExcellent general corrosion resistanceHigh strength-to-weight ratio
Applications
Turbine blades, discs and ringsAircraft structural componentsWeapons structural componentsFastenersMedical and dental implantsHand toolsSporting equipmentChemical process equipment
Physical Properties
Density: 0.160 lb/inch3
Melting Range: 2929 – 3020°F
Beta Transus: 1825± 25°F
Temperature, °F |
70 |
200 |
400 |
600 |
Coefficient of Thermal Expansion, in/in°F x 10-6 |
- |
5.3 |
5.4 |
5.5 |
Thermal Conductivity, |
4.0 |
4.3 |
5.2 |
6.1 |
Modulus of Elasticity, |
16.7 |
16.0 |
15.0 |
14.0 |
Mechanical Properties
Specified, AMS 4911, annealed sheet & plate
Anneal 1300°F, Air Cool |
Anneal 1300°F, Solution anneal 1750°F , Age 1000°F |
|
Ultimate Tensile Strength, ksi |
138-155 |
150-172 |
0.2% Yield Strength, ksi |
128-147 |
137-156 |
Elongation, % |
15-20 |
15-17 |
Reduction of Area, % |
38-51 |
41-46 |
Typical Tensile Strength and Fracture Toughness, Various Heat Treatments for Flat-rolled Products (MCIC-HB-02 1985 reprint)
0.2% Yield Strength, ksi |
Fracture Toughness K1C, ksi √in |
|
Annealed |
132 |
128 |
Beta Annealed (plate) |
131 |
134 |
Beta STA 1250°F b |
128 |
150 |
Beta STA 1000°F b |
143 |
120 |
STA 1250°Fc |
137 |
105 |
STA 1000°Fc |
159 |
80 |
(a) Directional variations,
(b) Beta heat treated followed by solution treating and overaging 1250 F, or aging 1000 F
(c) Solution treating and overaging 1250 F, or aging 1000 F
Regular shape for all kinds of alloys | |||
Form | Specification | Supply Form | Others |
Sheet | Thickness:0.40-4.75mm,General Width:1000、1219、1500mm | Whole Coil or piece of it | Cold Annealed,Surface 2B、2E |
Plate | Thickness:4.76-60mm,Width:1500、2000、2500mm,Length:3000、6000、8000、8500mm(Under 10mm plate can be coiled) | Whole Coil or piece of it | Single hot rolling,Solid solution annealed state,Surface 1D |
Belt | Thickness:0.10-3.0mm,Width:50-500mm | Whole Coil or Specified size | Cold Annealed,Surface 2B、2E |
Bar & Rod | Rolled barΦ5-45mm,Length≤1500mm | Polished Bar(circle、Square) | Solution annealing,descaling |
Forged barΦ26-245mm,Length≤4000mm | |||
Weld tube | Outer diameterΦ4.76-135mm,Wall Thickness0.25-4.00mm,Length:≤35000 mm | Base on your requirement | |
Seamless Tube | Outer diameterΦ3-114mm,Wall Thickness0.2-4.5mm | Base on your requirement | |
Wire | Outer diameterΦ0.1-13mm | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
Forged piece | discs,rings,squares,blocks,slabs | Base on your requirement | Steel, Alloy |
Flangs | All kinds of Flangs | Base on your requirement | Steel, Alloy |
Welding Material | Coil wire Φ0.025mm-1.6mm | Base on your requirement | Certificate of Origin:America, Sweden, Britain, Germany, Austria, Italy, France. |
Straight WireΦ1.6mm-4.0mm | |||
Welding rodΦ1.2mm-4.0mm | |||
Tube | Elbow, three links, four links, different diameter size | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
Explosive bonded laminate | Raw Sheet Thickness≥2mm | Base on your requirement | Ni & Ni alloy, Ti & Ti alloy |
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As Found on FOX Company Information with John Criswell, Production Marvels
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