UMCo 50 Alloy Plate
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of umco 50 alloy plate in China. If you're going to wholesale high quality umco 50 alloy plate made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
UMCo50 is a heat-resistant cobalt alloy that has excellent thermal shock resistance and wear resistance. It also shows great strength against sulfur-and vanadium-attacks. Another feature is its higher melting point compared to other cobalt base orl nickel base heat-resistant alloys. For example, the alloy used for skid rails at a steel mill undergoes regular use at 1,350°C. Thus UMCo50 shows successful results in the application related to heat treatments and furnaces where other alloys could not be used due to their low melting point.
Common Trade Names:
Cobalt 50 , UMCo 50, G-CoCr28 , W.Nr : 2.4778
Specifications：
BS ISO 11973
Shock Resistances：
Since thermal shock resistance was given first priority when developing UMCo-50, 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 UMCo-50, whereas the 25Cr-12Ni alloys were able to be used for only 8 months in average.
Wear Resistances：
As for the wear resistance of UMCo-50, 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：
UMCo-50 can be welded together by arc or oxy-acetylene methods. When higher wear resistance is required, weld additionally with BISHILITE (HARDFACING ALLOYS). When welding UMCo-50 to stainless steel or steel, MA-W welding rod can be used.
UMCo 50 Chemical Composition
| % | C | Si | Mn | S | P | Ni | Cr | Co | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.05 | 0.5 | 0.5 | - | - | 2 | 27 | 48 | 1 | Blance |
| Max | 0.12 | 1 | 1 | 0.02 | 0.02 | 2.5 | 29 | 52 | 1.5 | Blance |
UMCo 50 Physical Properties
| Specific gravity | Melting temperature | Electrical Resistivity (25°C) | Thermal expansion (0∼1000°C) | Specific thermal conductivity (22°C) |
|---|---|---|---|---|
| 8.05 | 1380∼1395°C | 82.5Ω•cm | 16.8 X 10-6 /°C | 0.022cal/cm/sec./°C |
UMCo 50 Alloy Mechanical Properties
| Tensile strength kgf/mm2 | Yield strength(0.2%)kgf/mm2 | Elongation% | |
|---|---|---|---|
| 3mm Sheet (Flat rolled) | 90∼118 | 37∼46 | 10∼28 |
| 3mm Sheet : 1100°C X 30'Annealed | 80∼90 | 30∼37 | 10∼20 |
UMCo 50 Alloy High Temperature Hardness (Forgings)
| Temperature (°C) | Forgings (HV) |
|---|---|
| 20 | 260 |
| 600 | 228 |
| 700 | 210 |
| 800 | 160 |
| 860 | 76 |
| After work hardening | 425 |
High Temperature Corrosion
| Temperature(°C) | Time | Reduced weight g/m2 | Reduced weight g/m2/hr | |
|---|---|---|---|---|
| Plate (Flat rolled) | 1000 | 144hr | 26∼83 | 0.18∼0.58 |
| Plate (Flat rolled) | 1200 | 144hr | 200∼120 | 0.69∼0.83 |
UMCo 50 Available Shape
UMCo 50 Size Range
FAQ
Q: How do you control quality ?
A: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS,Alibaba Verified.
Q: What are the advantages of your company ?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.
Q: How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.
Q: Can you provide sample ?
A: Yes. We can provide the small samples in stock for free, as long as you contact us.Customized samples will take about 5-7 days.
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