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Short Description:
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.
Product Description
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 |
- Bars & Rods & Foring Ring /Flanges
- Sheet & Plate
- Strip & Coil
- Welding Wire &Spring wire
- Seamless Tube & Welded Pipe
»Round Bar & Square Bar & Hexagon Bar
● Diameter : φ8～φ300mm Length:10mm-6000mm
● Hot forging, Hot Rolling, Cold Drawing
● Bright Surface, Polished Surface, Black Surface
»Tube & Pipe:Seamless Tube& Welded Pipe
● Cold Drawing Seamless Pipe： φ1.0～φ220mm
● Hot Extrusion pipe: φ50～φ250mm
● Others : U Blend Tube and Elbow
»Hot Rolled Plate & Cold Rolled Sheet
● Cold Rolling Sheet Thickness: ≦2.0mm Width:≦1500m
● Hot rolling Plate Thickness: ≧4.0mm Width: ≦2500m
»Strip & Tape Ribbon
● Thickness: ≧ 0.01mm Width: 15mm-300mm
● Cold rolling BA Strip, Hard & Soft Condition
»Straight Length Wire & Spool Wire
● Welding Wire: φ 0.1mm～6.0mm Cut length Rod: φ1.0～φ8.0mm
● Package : 5-25kg/Spool or Box
UMCo 50 ApplicationsI
- Petrochemical equipment residual oil vaporization furnace forging nozzles
- High temperature and high pressure valves
- Internal combustion engine exhaust valves
- Sealing surfaces
- High temperature molds
- Steam turbine blades
- Sealing surfaces,furnace parts
- Wait,chain saw guide plates, plasma spray welding