• Suzhou Xunshi New Material Co., Ltd
    Daniel Weree
    Have been business relationship for 3 years, great partner for Nickel Cobalt Alloy!
  • Suzhou Xunshi New Material Co., Ltd
    Carolina Fasio
    On-time delivery. And support is good and fast.
Contact Person : Allen Sun
Phone Number : +86 18112628895
WhatsApp : +8618112628895

Shock Resistance Nickel Cobalt Alloy W.Nr. 2.4778 Rod Forging Tube

Place of Origin China
Brand Name XUNSHI
Certification ISO9001:2015
Model Number W.Nr. 2.4778
Minimum Order Quantity 100kg
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 3000kg per month

Contact me for free samples and coupons.

WhatsApp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Equal Grades W.Nr. 2.4778, UmCo50,Co50 Form Of Supply Forging, Tube,rod,pipe
Diameter 20-500mm Chemical Composition 50Co-30Cr-20Fe
Product Name Nickel Based Alloys Certification ISO9001:2015
High Light

Forging Tube Nickel Cobalt Alloy


Shock Resistance Nickel Cobalt Alloy


Shock Resistance Nickel Based Alloys

Leave a Message
Product Description

High Temperature Resistance Nickel Based Alloys W.Nr. 2.4778 Rod Forging Tube


W.Nr. 2.4778 is a heat-resistant cobalt alloy with excellent thermal shock resistance and wear resistance performance. We can supply W.Nr. 2.4778 in forms of Rods, forgings, seamless pipes, tube and so on.


Chemical Composition (%, EN 10295)

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


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.


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.


High Temperature Resistance, Thermal Shock Resistance , Wear Resistance

Higher melting points than other cobalt based and nickel based alloys (1380 -1395 °C)

Corrosion resistant in Sparse sulfuric acid and boiling nitric acid and corrosion rapidly in hydrochloric acid

Equal grades

Thermco50, Co50, Umco50


XUNSHI has strong strength in production of the cobalt alloys,if you have any request,please feel free to contact us.


Shock Resistance Nickel Cobalt Alloy W.Nr. 2.4778 Rod Forging Tube 0Shock Resistance Nickel Cobalt Alloy W.Nr. 2.4778 Rod Forging Tube 1Shock Resistance Nickel Cobalt Alloy W.Nr. 2.4778 Rod Forging Tube 2