1 Introduction

Solder powder is a material used for soldering. It can only achieve good soldering when it is protected with flux. The solder powder is a metal material that melts and fuses with the material.

Stellite is a hard alloy that is resistant to all types of wear and corrosion and high temperature oxidation. The so-called cobalt-based alloy, stellite alloy with cobalt as the main component, contains a considerable amount of nickel, chromium, tungsten and a small amount of alloying elements such as molybdenum, niobium, tantalum, titanium, niobium, and occasionally iron. A class of alloys. Depending on the composition of the alloy, they can be made into powders for hardfacing, thermal spraying, spray welding and other processes.

The particle size is in units of pixels and refers to the number of mesh openings per square inch. 1 inch = 2.54 cm, such as 100 mesh is 100 square holes on one square inch, 18 mesh with a particle size of 1000um, 180 mesh with a particle size of 100um, and a 1800 mesh powder with a particle size of 10um. An aggregate of discrete particles of less than 1 mm, the particles refer to a geometry having a specific shape within a range of sizes. The size mentioned here is generally between millimeters and nanometers, and the particles refer not only to solid particles but also liquid particles such as mist droplets and oil beads.

2.Use

Cobalt-based alloy powder is a hard alloy that is resistant to various types of wear and corrosion and high temperature oxidation.

Cobalt-based superalloys lack a coherent strengthening phase, although the medium temperature strength is low (only 50-75% of nickel-based alloys), but higher strength, good thermal fatigue resistance, hot corrosion resistance and higher than 980 °C Abrasion resistance and good weldability. Suitable for the production of air jet engines, industrial gas turbines, guide vanes and nozzle guide vanes for marine gas turbines, and diesel engine nozzles.

Stellite alloy is a kind of alloy containing cobalt, which contains a large amount of nickel, chromium, tungsten and a small amount of alloying elements such as molybdenum, niobium, tantalum, titanium and niobium, and occasionally iron. Depending on the composition of the alloy, they can be made into welding wire. The powder can be used for hard surface surfacing, thermal spraying, spray welding, etc., and can also be used for casting and forging parts and powder metallurgy parts.

According to the purpose of use, cobalt-based alloys can be divided into cobalt-based wear-resistant alloys, cobalt-based high-temperature alloys and cobalt-based wear-resistant and aqueous corrosion-resistant alloys. Under normal working conditions, in fact, it is both wear-resistant, high-temperature resistant, wear-resistant and corrosion-resistant. Some working conditions may also require high temperature resistance, wear resistance and corrosion resistance, and the more complicated it is. Under the circumstance, the more the advantages of cobalt-based alloys can be realized.

3.Brand

Typical grades of cobalt-based high temperature resistant alloys are: Hayness 188, Haynes 25 (L-605), Alloy S-816, UMCo-50, MP-159, FSX-414, X-40, Stellite 6B, etc., Chinese grades are: GH5188 (GH188 ), GH159, GH605, K640, DZ40M, etc.

4.Composition table

Material Chemical Composition(%)
C Cr Si W Fe Mo Ni Co Mn
Stellite1 2.50 29.50 1.20 12.50 3.00 1.00 3.00 Bal 1.00
Stellite3 2.40 31.00 1.00 12.50 3.00 3.00 Bal 1.00
Stellite4 0.90 32.00 1.00 13.50 1.00 0.50 0.50 Bal 0.50
Stellite6 1.20 29.00 1.20 4.50 3.00 1.00 3.00 Bal 1.00
Stellite12 1.45 29.00 2.00 8.50 3.00 1.00 3.00 Bal 1.00
Stellite20 2.45 32.50 1.00 17.00 3.00 1.00 3.00 Bal 0.50
Stellite21 0.25 27.00 1.00 0.15 2.00 5.50 2.50 Bal 1.00
Stellite31 0.50 25.50 1.00 7.50 2.00 1.00 10.50 Bal 1.00
Stellite190 3.20 26.00 1.00 14.00 5.00 1.00 3.00 Bal 1.00

 

 

 

Eternal Bliss Alloy Casting & Forging Co, Ltd.

Technical Dept.

E-mail: sales@ebcastworld.com

what’s app: 0086-13093023772

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