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Anti Thermal Shock Nickel Based Alloy UMCO50 Seamless Pipe

Place of Origin China
Brand Name XUNSHI
Certification ISO9001:2015
Model Number UMCo-50
Minimum Order Quantity 100kg
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 3000kg per month

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Product Details
Equal Grades Thermco50, W.Nr. 2.4778 Form Of Supply Forging, Tube,rod,pipe
Diameter 20-500mm Chemical Composition 50Co-30Cr-20Fe
Product Name Nickel Based Alloys Certification ISO9001:2015
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Anti Thermal Shock Nickel Based Alloy


Nickel Based Alloy UMCO50


Anti Thermal Shock Nickel Cobalt Alloy

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Product Description

Thermal Shock Resistance Nickel Based Alloy UMCO50 Forging Rod Seamless Pipe

Thermal Shock Resistance Nickel Based Alloys UMCO50 Forging Rod Seamless Pipe


XUNSHI NEW MATERIALS CO LTD supplies UMCO50 in forms of forgings, round bar, tube and so on.


UMCO50 is a heat-resistant cobalt alloy with excellent thermal shock resistance and wear resistance performance. It has great strength against sulfur-and vanadium-attacks. UmCo-50 has higher melting point compared to other cobalt based or nickel based heat-resistant alloys.


UMCO50  is suitable for the environments that require oxidation resistance,high temperature strength and thermal corrosion resistance, thermal impact resistance and wear resistance.


In a sulfur-containing oxidation atmosphere, it has an excellent thermal corrosion resistance to heavy oil or other fuel combustion medium. It is widely used in coal chemical nozzle.


For example, the alloy used for skid rails at a steel mill undergoes regular use at 1350°C.  

Other alloys could not be used due to their low melting point in the application related to heat treatments and furnaces. But W.Nr. 2.4778 shows successful results.


Chemical Composition (%, EN 10295)

C Si Mn P S Cr Mo Ni Nb Co Fe
0.05-0.25 0.50-1.50 1.5 0.04 0.03 27-30 0.50 4.0 0.50 48-52 Balance


Equal grades

Thermco50, W.Nr. 2.4778, Co50,


Shock Resistances

Since thermal shock resistance was given first priority when developing W.Nr. 2.4778, this alloy shows far more outstanding thermal shock resistance than the popularly used 25Cr-20Ni stainless steel. For example, even after repeating the heating and cooling cycle (1000-water cooling-7 seconds) for 500 times, no cracking occurred. As a practical example, the alloy was used for four and a half years as a tray which was heated up to 1000 in a heavy oil furnace to quench various quenching agents. Hardly any cracking occurred in W.Nr. 2.4778, whereas the 25Cr-12Ni alloys were able to be used for only 8 months in average.

Wear Resistances

As for the wear resistance of W.Nr. 2.4778, hardly any deterioration was found after being used as a sintering bar for copper sulfide for 50 months. On the other hand, cast iron parts used till then were heavily corroded, oxidized and worn even though operations were conducted at 900, making them usable for only three and a half months.



XUNSHI has strong strength in production of cobalt alloy. Available grades include Haynes 25(L605), Haynes 188, MP35N, MP159, Waspaloy, 


Anti Thermal Shock Nickel Based Alloy UMCO50 Seamless Pipe 0Anti Thermal Shock Nickel Based Alloy UMCO50 Seamless Pipe 1