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|Light Weight:||Absorbs Vibration For Longer Life, While Retaining Dimensional Stability.||Stablity:||No Stress Relief After Machining; No Warps And Is Dent Resistant.|
|COSTS:||Machine Dry, Without Oil Or Chemicals.||TOOLING:||4 To 5 Times Greater Tool Life.|
|FINISH:||Up To 5 Times More Machinable Than Rolled Aluminum.||NONMAGNETIC:||Good For Electrical And Computer Applications.|
|WEIGHT:||Easier Handling Saves Energy And Time.||FLATNESS:||Eliminates Surface Machining.|
|WELDING:||Strong Weldments Up To 95% Of Parent Metal, With Minimal Porosity.||ALKALI-RESISTANT:||Makes For Easy Cleaning.|
|CORROSION RESISTANT:||A Wide Variety Of Chemical Treatments Exists For Corrosion Protection, Alteration Of Surface Appearance, And To Provide A Base For Painting. Basic Engineering Precautions Averts Galvanic Corrosion.||STRENGTH:||Excellent Strength And Stiffness Per Unit Weight.|
|NON-GALLING:||Sound And Rugged Surface, Offering A Low Coefficient Of Friction And Minimum Wear,||REPID HEAT:||Ideal For A Broad Range Of Operating Temperatures, From 350 Degrees Fahrenheit To -30 Degrees Fahrenheit.|
|UNIT VOLUME:||Greater Amount Of Finished Magnesium Material Obtained, Pound For Pound.||SALVAGE:||Scrap Retains A Consistently High Level Of Value.|
strongest magnesium alloy,
wrought magnesium alloys
Magnesium Profile AZ31 / AZ31B magnesium extrusions / AZ31B-F profile Magnesium
The process for extruding magnesium wrought material is almost the same as the process for extruding aluminium materials. Most common is direct extrusion without a lubricant.
Cylindrical ingots are heated to 300-400 degrees Celsius (depending on the used alloy) and pressed through dies with manifold cross- sections. This procedure ensures a clean metallic surface and non-porous microstructures that are really important for high-tech materials and special requirements.
The maximum extrusion speed depends on the alloy that’s been used and defines the price. The alloy AZ 31 is easier for extrusion, and the most difficult alloys are for example AZ 80 and ZK 60 The extrusion speed is sometimes more than ten times slower for these alloys.
The special shapes and cross-sections of the magnesium extrusions can be designed with considerable freedom. Extruded shapes are separated into solid and hollow profiles according to the complexity factors and the cross-sections. Full rods, flat bars and shapes without embedded planes belong to the first type, while hollow profiles include one or more completely enclosed cavity or bay region.
The minimum wall thickness is determined by the alloy and form of the profile. For small or medium size profiles in alloy AZ31 the minimum wall thickness is about 1 mm. Wall thickness in multiple walls with bosses, flanges, ribs, slits and indentations can be incorporated into a new designed product to maximize the mechanical properties.
With some of the alloys it’s possible to extrude magnesium on the standard dies that are normally used for aluminium extrusions with a small correction to the die. Because of this there is a wide range of standard profiles (for example flat/angle/rectangular –square and round tubes/ U-shape/H-shape etcetera) that can be extruded without big investments in new dies. The second added value for the customer is that for new designed profiles, he only needs to invest in one single die for extruding profiles in aluminium and magnesium.
After extrusion there are several steps necessary before the extruded profile can be used for constructional components with the required strength for example stretching and special heat treatment.
XYCM’s capacity for the extrusion:
Bar: Max. Diameter: 300mm;
Tube: Max. OD: 600mm x thickness 125mm
Flat bar: 920 x 160mm
U-Shape: 800 x 300mm
Rectangular: 700 x 200mm
Square tube: 430 x 430mm
Max. Length for the above items: 30meter/each
We also can extrude special shape profiles according to customer’s drawings, and we have good machining capabilities.
Applications of our extruded products:
The special characteristics of magnesium such as its light weight and damping capacity make it therefore, a material that is readily used in several different applications.
|Engine blocks||Steering column parts||Seat components|
|Bed plates||Brake and pedal brackets||Roof panels|
|Transmission houses||Airbag retainers||Fuel tank covers|
|Transfer cases||Radio frames + heatsinks||Engine hoods|
|Head covers||Radio covers||Rear deck lids|
|Oil pans||Mirror brackets||Full magnesium doors|
|Knee bolsters||Door handles||Wheels|
|Steering wheels||Front ends||Radiator supports|
Sport and Leisure
|Luggage frames||Suit cases||Tennis rackets|
|Bicycle frames||Camping equipment||Snowshoes|
|Mountain bike frames||Eyewear frames||Bull floats|
|Cellular phones||Multi-media housings||Camcorders|
|Antenna housing||Camera Housings||Electric shavers|
|Loudspeaker frames||Projector frames||Printers|
|Train Seats||Aviation components||Turbine engines|
|Truss constructions||Cargo floors||Powertools|
|Chain saws||Concrete trowels||Wall saws|
Mg content calculated as balance. Similar to but
higher ductility than AZ60A-T5.
Component Value Min Max
Magnesium, Mg 94
Zinc, Zn 4.8 6.2
Zirconium, Zr 0.45
Properties Value Min Max Comment
Density, g/cc 1.83 -- --
Hardness, Brinell 88 -- --
500 kg load, 10 mm
Hardness, Knoop 113 -- -- Estimated from Brinell
Hardness, Rockwell A 37.5 -- -- Estimated from Brinell
Hardness, Rockwell B 55 -- -- Estimated from Brinell
Hardness, Vickers 100 -- -- Estimated from Brinell
Tensile Strength, Ultimate, MPa 365 -- --
Tensile Strength, Yield, MPa 305 -- -- at 0.2% Offset
Elongation at Break, % 11 -- -- in 50 mm
Modulus of Elasticity, GPa 45 -- -- In Tension
Compressive Yield Strength, MPa 250 -- -- at 0.2% offset
Ultimate Bearing Strength, MPa 585 -- --
Bearing Yield Strength, MPa 405 -- --
Poissons Ratio 0.35 -- --
Machinability, % 100 -- --
Shear Modulus, GPa 17 -- --
Shear Strength, MPa 180 -- --
Electrical Resistivity, ohm-cm 6,00E-06 -- --
Heat of Fusion, J/g 315 -- --
CTE, linear 20°C, µm/m-°C 26 -- --
from 0-100°C (32-
CTE, linear 100°C, µm/m-°C 27 -- --
20 - 200ºC. Estimated
from similar Mg alloys.
Specific Heat Capacity, J/g-°C 1 -- --
Thermal Conductivity, W/m-K 120 -- --
Melting Point, °C -- 518 -- Incipient Melting
Solidus, °C 520 -- --
Liquidus, °C 635 -- --