Metal material

INVAR 36

Is containing 36% nickel, such a widely used material, and CTE (Coefficient of thermal expansion) is near to zero. Between the range of temperature, -250℃ to 200℃, this alloy‘s coefficient of expansion is about one tenth of carbon steel. This alloy also keep great strength and toughness in low temperature that is suitable for application in low expansion and low temperature. It is used for medical instrument, electronic engineering, manufactured components in aerospace, 3C and numerous component in low temperature.

 

HASTELLOY ®C276

Is forging-anticorrosion, and the advantage of this alloy is not to need solution heat treatment after welding. This alloy also has excellent ability with resistance in pitting, crevice corrosion and stress corrosion. It can let alloy to resist chloride’s erosion with higher content of molybdenum and chromium. Tungsten in alloy promote to corrosion resistivity. Meanwhile, alloy C276 is one of the rare material that may resist the corrosion of wet chlorine, hypochlorite and chlorine dioxide solution; for chloride with high concentration, like ferric chloride and copper chloride, it has significant corrosion resistance. This alloy is suitable for various concentration of sulfuric acid, and it is also one of few material that can use in the situation with hot and high concentrated sulfuric acid. It is usually used for rotor in special environment, screw bolt, shaft, blade, bellows and marine science and technology.

 

HASTELLOY ®C22

Is all-around nickel-chromium-molybdenum-tungsten alloy. It has better bulk corrosion resistivity than the others, likes HASTELLOY C276, alloy C4 and alloy 625. Alloy C22 has well resistance in pitting, crevice corrosion and the ability of stress-corrosion cracking, and also has perfect resistance in oxidized acid and reductic acid, like wet chlorine, nitric acid, oxidized acid with chloride ion, ferric chloride, copper chloride, chlorine, methanoic acid, ethanoic acid, acetic anhydride, sea water and saline. HASTELLOY C22 could resist crystal boundary precipitaion in welding heat-affected zone, and this characteristic let alloy may adapt multiple application in many process about chemical engineering.

 

HAYNES ®242

Nickelbased alloy is a kind of high temperature nickelbased alloy composed of nickel, molybdenum, chromium and cobalt. The content of nickel in this alloy is about 60%; that is also called “age hardening alloy” and still have perfect strength in 705℃(1300℉). Its thermal expansivity is low and still have good resistance to oxidation till 815℃. Workability of this alloy is outstanding and has perfect resistance in the environment which is full of chlorine and high-temperature. It is used to produce sealing ring for gas turbine, control structure, and high temperature bolting. Which is also used in the production of fluoropolymer plastics and application in chemical engineering & petrochemical industry.

 

NITRONIC ®60

High content-nickel stainless steel, which is famous for perfect wear-resistivity during the rising temperature gradient. It could reduce the wear and surface corrosion when the content of 4% silicon and 8% nickel in this alloy, and usually fits for different types of fastener and screw bolt that need high strength and good wear resistance. In room temperature, this alloy’s yield strength is twice higher than stainless type 304 & 316. It can retain well strength and oxidation resistance like stainless type 309 in 980℃. Its normal corrosion resistance is between the range of type 304 and type 306, and chloride-pitting resistance is better than stainless type 316.

 

NICKEL 200

Commercially pure nickel purity is up to 99.6% and above. It has excellent ductility, acid/alkali proof, high-temperature resistance and fine workability. This alloy has higher thermal/electrical conductivity, lower gas content and vapor pressure. The material is limited to using in the temperature lower than 315℃ because high temperature may cause graphitization for this material. If the temperature is higher than 315℃, you will choose to NICKEL 201 for using.

 

CP Titanium

Commercially pure titanium doesn’t include other alloying elements, and it only contains few elements like oxygen, carbon, nitrogen, hydrogen and iron. The content of oxygen impacts on the strength of pure titanium more. Generally speaking, 0.1 wt% oxygen may enhance strength of titanium about 100-120 MPa. According to the  amount of oxygen content, commercially pure titanium can be divided into 4 grades for identify :

Grade 1-

The oxygen content of this pure titanium is lower than 0.18wt%. It has some characteristics like low strength, outstanding ductility and well compactibility. That is mainly used for the roof of architecture and the component of plate heat exchanger.

Grade 2-

Tensile strength of this pure titanium is between 350 to 450 MPa, which is often used in the four kinds of pure titanium and usually produced for seam/seamless tube and chemical-engineering tank.

Grade 3-

Tensile strength of this pure titanium is between 500 to 600 MPa, which is mainly used for pressure vessel in chemical engineering.

Grade 4-

The strength of four pure titanium is the highest. This pure titanium’s strength is nearly 700 MPa and usually used for a few fasteners. Some complicated components need to be formed in about 300℃.

In addition to special metals, we’ve gained a lot of experience in treatment of general metals, such as carbon steel, stainless steel 3,4&6 series, aluminum alloy 1 to 7 series, copper alloy and titanium alloy.