Nitinol: The Magical Metal with Memory

Metal with Memory People have memories. But it’s normal for them to be able to recall things. If metals could remember, that would make the world a whole lot more amazing. This magic metal is known as the “shape memories alloy “!

The shape memory alloy (SMA) is an alloy material that has a “memory”. It is able to remember its original form and can also sense and drive at the same moment. It’s a type of intelligent material. The shape memory alloy will return to its original state no matter how it deforms. The action of stress and temperature can cause it to undergo phase transition. It is critical to 4D printing due to its unique form memory effect, pseudo-elasticity, and other properties. Once ordinary metal is formed into a spoon it will remain that way. You can twist the spoon using pliers but it will eventually become an inutilitarian pile of metal parts. However, spoons made of shape-memory alloy can be bent and heated to restore their original form, giving them many magic uses. There are many types of shape-memory alloys that have been found around the world. However, Nitinol has been the first to be developed, and is still the most widely used. Martensite is the SMA material with two crystal structures, austenite. One is the SMA that is heated at higher temperatures, and the other is the SMA that is lower. It is the result of the transformation from austenite into martensite that gives rise to this memory property.

The Discovery of Shape Memory Alloys

The discovery of SMA material properties is just one story. In the 1930s scientists began to study the unexpected properties of various metals. This was the beginning of early research on the material. Arne Ollander (Swedish chemist) described a pseudoelasticity phenomenon that was discovered in the study of gold-cadmium alloys. It wasn’t until 30 years later when a laboratory accident revealed that “shape memories alloy” actually existed …

The U.S. began conducting metallurgical studies in the 1960s and 1950s. Naval Weapons Laboratory. William J. Buehler (scientist) was working on casting and melting nickel-titanium rods one day. As he waited for the rods cool down, a man named William J. Buehler dropped one of his rods onto the concrete floor. He heard a dull sound. After thinking this strange, he then dropped another hot nickel-titanium rod on the concrete floor. Then he heard something resembling a bell. Buehler began to worry that the casting was not going according to plan. He went to the cooler and cooled the hot nickel-titanium bar with cold water. After cooling the rod of nickel-titanium, Buehler dropped it to the ground. He heard again a dull click. Later this was proven at the Naval Weapons Laboratory meeting. Buehler’s assistant distributed thin strips of Nitinol, which had been bent like an accordion and stretched. After Dr. David S. Muzzey grabbed the bar, he lit a lighter on it and warmed it. After a quick unfolding, the bar returned to its original form. The properties and properties that Nitinol has at different temperatures was recognized by people who called it Nitinol. Recent and future developments show that shape memory materials don’t have to be limited only to metals. Many other types of shape memory material, including shapes memory polymers, have been created and are being used commercially.

Shape Memory Alloy

It has an array of outstanding properties that allow it to be used widely in aviation, automotive industry and medical equipment. Recently, consumer electronics have also used shape memory materials. SMA can be found in mobile antennas, as well as the AUTOfocus component of smartphone cameras. SMA can even be used for toys and crafts. For example, flexible bracelets are made of shape-memory materials, which allow you to bend and twist them until they return to their original form.

Shape Memory Alloys

According to the National Strategic Emerging Industries Plan and other supporting policies by the Central and Local Governments, the shape memory alloy industry is one the seven new industries. The state supports and encourages it. With the continued development of shape memories alloy technology and the reduction in cost of industrial policies to increase and promote consumer acceptance, the use of shape alloy will continue to expand. Rmcplant (aka. Rmcplant is an advanced material. With over 12 years’ experience, Rmcplant is an established global supplier of chemical materials and manufacturer. High purity, small particles size, and low impurity are all hallmarks of the Nitinol that our company produces. We can help you if your requirements are lower.
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Silicon Aluminum Alloy Si-Al Powder

About Silicon Aluminum Alloy Si-Al Powder:
High-silicon aluminum alloy powder is a binary alloy composed of silicon and aluminum and is metal-based thermal management material. The high-silicon aluminum alloy material can maintain the excellent performance of silicon and aluminum, and the content of silicon and aluminum is quite rich. The preparation technology of silicon powder is mature and the cost is low. At the same time, this material does not pollute the environment and is harmless to the human body. Why is Silicon added to Aluminium?
When it is added to aluminum, the silicon makes the metal alloy more fluid without breaking the metal down at high temperatures. The silicon actually lowers the aluminum’s melting point. The aluminum will not experience hot tearing as there is no brittleness.
The density of high-silicon aluminum alloy is between 2.4~2.7 g/cm³, and the coefficient of thermal expansion (CTE) is between 7-20ppm/℃. Increasing the silicon content can significantly reduce the density and thermal expansion coefficient of the alloy material. At the same time, the high-silicon aluminum alloy also has good thermal conductivity, high specific strength and stiffness, good plating performance with gold, silver, copper, nickel, weldable with the substrate, easy precision machining and other superior performance, is an Electronic packaging material with broad application prospects, especially in high-tech fields such as aerospace, space technology, and portable electronic devices. Rmcplant is a trusted global Silicon Aluminum Alloy Si-Al Powder supplier. Feel free to send an inquiry about the latest price of Silicon Aluminum Alloy at any time.

How is Silicon Aluminum Alloy Si-Al Powder Produced?
Preparation method of silicon and aluminum alloy:
(1) no pressure infiltration method
In the role of carbon steel permeability aid in the air, make the aluminum alloy melt into the silicon particle prefabricated parts, so as to prepare a composite material method;
(2) pressure infiltration method
By applying an external force, liquid aluminum metal penetrates into the preform of silicon particles to promote the penetration, wetting and recombination of silicon particles and liquid aluminum metal. The usual steps are to prepare the prefabricated silicon particle reinforcements and then cast the permeable composites.
(3) vacuum hot pressing method
A sintering process in which pressure forming and pressure sintering is carried out simultaneously under vacuum conditions;
(4) powder metallurgy method
A method of making a certain proportion of aluminum powder, silicon powder and binder by dry pressing, injection and other methods to make powder mixing molding, and sintering in a protective atmosphere, so as to obtain a dense material;
(5) rapid solidification method
Also known as rapid solidification, the solidification degree and solidification speed can be increased by increasing the solidification cooling rate, so as to achieve the purpose of refining the microstructure of the alloy.

Application of Silicon Aluminum Alloy Si-Al Powder:
1) High-power integrated circuit packaging: high-silicon aluminum alloy provides effective heat dissipation;
2) Carrier: It can be used as a local heat sink to make the components more closely arranged;
3) Optical frame: high-silicon aluminum alloy provides low thermal expansion coefficient, high rigidity and machinability;
4) Heat sink parts: high silicon aluminum alloy provides effective heat dissipation and structural support.
Application of Silicon Aluminum Alloy Si-Al Powder in auto parts:
High-silicon aluminum alloy material (with a silicon content of 20%-35%) has excellent tribological properties and can be used as an advanced lightweight wear-resistant material in various transportation vehicles and various types of power machinery, machine tools, special fasteners And tools have been widely used.
High-silicon aluminum alloy has a series of advantages such as small specific weight, lightweight, good thermal conductivity, low thermal expansion coefficient, volume stability, good wear resistance, good corrosion resistance, etc., and is widely used as cylinder sleeves, pistons, rotors of automobile engines, Brake discs and other materials.

Storage Condition of Silicon Aluminum Alloy Si-Al Powder:
The damp reunion will affect Si-Al powder dispersion performance and using effects, therefore, silicon aluminum alloy powder should be sealed in vacuum packing and stored in cool and dry room, the silicon aluminum alloy can not be exposure to air. In addition, the silicon aluminum alloy powder should be avoided under stress.

Packing & Shipping of Silicon Aluminum Alloy Si-Al Powder:
We have many different kinds of packing which depend on the silicon aluminum alloy Si-Al powder quantity.
Silicon aluminum alloy Si-Al powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Silicon aluminum alloy Si-Al powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Silicon Aluminum Alloy Si-Al Powder插图
 

Silicon Alumium Alloy Powder Properties

Other NamesAlSi, SiAl, Si:Al, silicon aluminum, Si-Al Powder
CAS No.11145-27-0
Compound FormulaSi-Al
Molecular WeightN/A
AppearanceGray to Black Powder
Melting Point600-760℃
Boiling PointN/A
Density2.7 g/cm3
Solubility in H2OInsoluble
Monoisotopic Mass54.958 g/mol
  
  

Silicon Alumium Alloy Powder Health & Safety Information

Signal WordN/A
Hazard StatementsN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
Transport InformationNONH for all modes of transport
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Metal Alloy High Temperature Inconel625 Alloy Rod

About Metal Alloy High Temperature Inconel625 Alloy Rod:

Chemical composition (%): 
C: <=0,10
Cr: 20.00~23.00
Ni: residual
Co: <=1.00
Mo: 8.00~10.00
Al: <=0.40
Ti: 0.40
Nb: 3.15~4.15
Fe: <=5.00
Mn: 0.50
Si: 0.50
P: 0.015
S: 0.015

Heat treatment system:
Bar: 950 ~ 1030℃, air-cooled or water-cooled;  or 1090 ~ 1200℃, air cooling or water cooling solution treatment.
Plate: 950 ~ 1030℃, air cooling;  Or 1090 ~ 1200℃, air cooling.
Tube: Recommended annealing temperature: 960 ~ 1030℃, air-cooled or water-cooled. 

Properties: excellent corrosion resistance and oxidation resistance, good tensile and fatigue properties from low temperature to 980℃, resistant to stress corrosion in salt spray atmosphere.

Applications: can be widely used in the manufacture of aircraft engine parts, aerospace structural parts and chemical equipment.  Alloy processing and welding performance is good, tongsheng industry can supply a variety of plate, bar, pipe, wire, strip and forgings.  


Payment & Transportation:
Metal Alloy High Temperature Inconel625 Alloy Rod插图

Metal Alloy High Temperature Inconel625 Alloy Rod Properties

Other NamesInconel625 rod
CAS No.N/A
Compound FormulaN/A
Molecular WeightN/A
Appearancerod, bar
Melting PointN/A
Solubility in waterN/A
DensityN/A
PurityN/A
Sizecustomized
Boling pointN/A
Specific HeatN/A
Thermal ConductivityN/A
Thermal ExpansionN/A
Young’s ModulusN/A
Exact MassN/A
Monoisotopic MassN/A
  
  

Metal Alloy High Temperature Inconel625 Alloy Rod Health & Safety Information

Safety WarningN/A
Hazard StatementsN/A
Flashing pointN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
RTECS NumberN/A
Transport InformationN/A
WGK GermanyN/A
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Metal Alloy Titanium Rod For Making 3D Printing Powder

About Metal Alloy Titanium Rod For Making 3D Printing Powder :

Purposes: Aviation and ship parts, medical use
 

Execution standard:

Titanium And Titanium Alloy Bars For Powder Production In Additive Manufacturing (GB/T38973-2020)  

 

Permissible size deviation:

Allowable deviation of bar diameter is ±0.1mm. 

The allowable deviation of bar length is ±5 mm, a small amount of bar length shorter than the nominal length (10~100) mm is allowed, but not more than 5% of the total number.  

Both ends of the bar should be cut flat, cutting Angle should not be greater than 4 mm.  
The bending degree of the bar should not be greater than 0.7mm /m.  

 

Appearance quality:

The surface of bar should be clean, no oxide scale, crack, folding and other defects are allowed.  Local defects on the surface of the bar shall be removed and cleaned. Depth shall not exceed allowable diameter deviation.  
The surface of the bar is allowed to be less than half of the allowable diameter deviation of individual slight scratches, indentations, pitting and other defects.  

Payment & Transportation:
Metal Alloy Titanium Rod For Making 3D Printing Powder插图

Metal Alloy Titanium Rod For Making 3D Printing Powder Properties

Other NamesTitanium rod
CAS No.N/A
Compound FormulaTi
Molecular WeightN/A
AppearanceN/A
Melting PointN/A
Solubility in waterN/A
DensityN/A
PurityN/A
Sizecustomized
Boling pointN/A
Specific HeatN/A
Thermal ConductivityN/A
Thermal ExpansionN/A
Young’s ModulusN/A
Exact MassN/A
Monoisotopic MassN/A
  
  

Metal Alloy Titanium Rod For Making 3D Printing Powder Health & Safety Information

Safety WarningN/A
Hazard StatementsN/A
Flashing pointN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
RTECS NumberN/A
Transport InformationN/A
WGK GermanyN/A
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