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Thermal Shock Resistance Nickel Based Alloys W.Nr. 2.4778 Forging Rod 20-500mm

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Thermal Shock Resistance Nickel Based Alloys W.Nr. 2.4778 Forging Rod 20-500mm

Brand Name : XUNSHI
Model Number : W.Nr. 2.4778
Certification : ISO9001:2015
Place of Origin : China
MOQ : 100kg
Price : Negotiable
Payment Terms : T/T
Supply Ability : 3000kg per month
Delivery Time : 30-35 days
Packaging Details : Plywood case
Equal grades : W.Nr. 2.4778, UmCo50
Form of supply : Forging, tube
Diameter : 20-500mm
Chemical Composition : 50Co-30Cr-20Fe
Product Name : Nickel Based Alloys
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W.Nr. 2.4778 with Excellent Thermal Shock Resistance and Wear Resistance


A-ONE ALLOY supplies W.Nr. 2.4778 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.


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

ElementCSiMnSPNiCrCoMoFe
Weight(%)0.05~0.120.50~1.000.50~1.00≤0.020≤0.0202.00~2.5027.00~29.0048.00~52.001.00~1.50Balance

An example of Chemical composition XUNSHI supplied to customer

ElementCSiMnSPNiCrCoMoFe
Weight(%)0.0990.830.690.0060.0112.1428.2449.291.31Balance

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.

Weldability

W.Nr. 2.4778 can be welded together by arc or oxy-acetylene methods. When higher wear resistance is required, weld additionally with BISHILITE (HARDFACING ALLOYS). When welding W.Nr. 2.4778 to stainless steel or steel, MA-W welding rod can be used.


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


Product Tags:

high temperature nickel alloys

      

cobalt based alloy

      
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Thermal Shock Resistance Nickel Based Alloys W.Nr. 2.4778 Forging Rod 20-500mm Images

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