Copper Rod

BS2874 : NS101 : BS2870 : NS104 / NS106 - Silverspeed - XL
Nickel Silver rod is copper alloy with additions of zinc and nickel. Their special blend of mechanical properties, physical properties and performance characteristics depend on the relative proportions of the three elements. Their attractive colour varies from pale gold to silvery white. They are termed nickel silver because they contain nickel and are, by and large, silvery in appearance. But the term is somewhat misleading since they are neither nickel-based nor do they contain silver! They are best considered as brasses to which nickel is added, primarily to improve tarnish resistance, oxidation resistance and general mechanical performance characteristics.

Nickel Silvers are capable of providing a unique combination of strength, high modulus spring properties, corrosion and oxidation resistance, anti-galling properties, excellent cryogenic performance and numerous other attributes combined with ease of forming, machining plating and joining.

Silverspeed-XL Extra Free-Machining Rod
This is a truly superlative free-machining alloy with a machineability almost the same as free-cutting brass. It is highly recommended for the production of intricate components by complex machining operations. This grade is stocked exclusively by Columbia and as with all standard grades, will be specified in the new European Standards for copper based alloys. It has basically the same application and performance characteristics as NS101, but with an invaluable increase of around 20% in machineability.

Nominal Composition :
NS 101 45% Copper 10% Nickel 2% Lead Remainder Zinc NS104 63% Copper 12% Nickel 0.2% Manganese Remainder Zinc NS 106 63% Copper 18% Nickel 0.3% Manganese Remainder Zinc Silverspeed 49% Copper 7% Nickel 3% Lead 2% Manganese Remainder Zinc

Mechanical Properties : (Specification Minima all sizes)
NS 101 UTS 460N/mm : Elongation 8% NS 104 Hardness 130 HV NS 106 Hardness 110 HV max Silverspeed UTS 500N/mm2 : PS 400N/mm2 : Elongation 18% : Hardness 180 HV

BS2870 / BS2875 : PB103 - BS2874 : PB102 - NES838 BS2874 : PB104/ BS B24 (DTD265A*) (Colbronze) - BS1400 : PB1 ASTM B139 : C54400 (Colphos 90)

Phosphor Bronzes, more accurately described as Tin Bronzes, are alloys of copper where tin is the main alloying element with phosphorus added primarily as a deoxidant. Alloys containing up to about 9% tin are wrought. Alloys containing from about 10-12% tin are used as-cast. They are strong, corrosion resistant alloys with many traditional uses in marine environments and in electrical and electronic engineering where their especially at the higher cast level, imparts good wear resistance for traditional use in bearing components.

Naval brass rod or c46400 is a high strength, corrosion resistant alloy containing nominally 60% copper, . 75% tin and 39. 25% zinc. It is widely used in marine construction where a strong, corrosive resistant and hard material is required. It is available at a comparatively low cost