| Property | Precision Alloy Bars |
| Material Composition | Precision alloy bars are typically composed of metals like nickel, cobalt, iron, copper, and other elements in specific proportions. Common alloys include Invar, Kovar, Mu-metal, Constantan, and Permalloy. |
| Diameter Range | Available in a variety of diameters, typically ranging from 5 mm to over 100 mm, depending on the alloy and specific application. Custom diameters can be produced to meet specific needs. |
| Applications | Used in precision instruments, sensors, magnetic shielding, electrical components, and aerospace applications where accurate material behavior is required. Applications include aerospace, electronics, medical devices, transformers, and industrial machinery. |
| Mechanical Properties | High strength, toughness, and resistance to deformation. Precision alloy bars offer excellent dimensional stability under both high and low temperature conditions. |
| Thermal Properties | Precision alloys are designed for specific thermal applications, such as Invar (very low thermal expansion) or Constantan (stable electrical resistance at varying temperatures). |
| Electrical Properties | High electrical conductivity (for alloys like Constantan) or controlled resistance (for precise applications like thermocouples, strain gauges). |
| Magnetic Properties | Alloys like Mu-metal offer high magnetic permeability and are ideal for shielding sensitive equipment from external magnetic fields. |
| Forming & Fabrication | Precision alloy bars can be cold-rolled, hot-rolled, forged, or drawn to precise diameters. They are also easily machined, threaded, and turned into required shapes for various industrial applications. |
| Heat Treatment | Heat treatments such as solution annealing or stress-relieving are commonly applied to precision alloy bars to improve mechanical properties and ensure dimensional stability. |
| Welding & Joining | Some precision alloys are weldable, but care is required to control the heat input during welding to prevent material degradation, especially for alloys sensitive to temperature variations. |
| Examples of Alloys | Invar (36% Fe-Ni), Kovar (Fe-Ni-Co), Constantan (Cu-Ni), Mu-metal, Permalloy, Ferro-nickel |
| Cost | More expensive than standard carbon steel or non-precision alloys due to the high cost of raw materials (nickel, cobalt, etc.) and the precise control required during manufacturing. |
| Common Standards | ASTM B574, ASTM B622, AMS 5553, ASME SB-574, ASTM A-240 |