Hardcarb 5040
Hardcarb 5040 is a versatile hardfacing alloy with good abrasive wear resistance and with acceptable impact resistance. The alloy is machinable, and produces hard dense corrosion resistant coatings with superior fusing characteristics. The alloy exhibits good hot hardness up to approximately 400°C. Most often used to protect glass mould press-n-blow plungers and also as an oxidation resistant underlayer for oxy-fuel weld hardfacing.
Weld deposit characteristics:
Nickel-based powder with a low melting point. It flows easily on to base metals and yields smooth deposits. Deposits maintain a high level of hardness up to 650°C and resist galling, pitting and corrosion in addition to abrasion. It can be deposited on low and medium carbon steels. Deposits have exceptional hot hardness properties.
It can be machined to sharp edges with carbide tools and grinding.
Recommended uses and applications
Typical applications:
» dies, moulds, valves, and plungers in glass industry
» centrifuges
» oil extraction screws
» plastic extrusion screws
» oxidation resistant underlayer for oxy-fuel weld hardfacing
Additional info
Anti-wear suitability
| Metal-to-Metal friction Metal surfaces in relative motion forced into contact with or without lubricant. Degradation by the formation of micro-welds between the contacting surfaces. | Suitable |
| High pressure abrasion Wear by relative movement under pressure of mineral particles of suitable hardness, shape and texture to remove material from the metal surface, leaving superficial deformation. | Suitable |
| Cavitation Tearing out of grains from the metal surface by the formation and implosion of bubbles in a liquid in rapid motion. | - |
| Mechanical fatigue Fatigue and formation of cracks in surface regions due to tribological stress cycles that result in the separation of material. | - |
| Thermal fatigue Cyclic exposure to high temperatures leading to permanent deformation by alternate expansion and contraction. Alteration of the structure and properties of the material. | Suitable |
| Hot oxidation Creation of a poorly adhering oxide layer that reforms constantly. Degradation by loss of material thickness. | Suitable |
Workability
| Work hardening Work hardening is the process of making a metal harder and stronger through plastic deformation. When a metal is plastically deformed, dislocations move and additional dislocations are generated. | |
| Edge retention Suitability for creating sharp edges and retaining them during operation. | |
| Machining Machinability is the ease with which a metal can be cut (machined) permitting the removal of the material with a satisfactory finish at low cost. | Suitable using carbide tools. |
