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Features and Benefits

Natural diamonds, abbreviated as ND, are naturally formed within the earth at high-pressure and high-temperature conditions. Because of its extremely rigid lattice, it can be contaminated by a few types of impurities such as boron and nitrogen.

KIWI® Wire Die offers diamond drawing dies with natural diamond (ND) blanks inside as a high quality and durable product for drawing ferrous and non-ferrous wires 0,010 to 1,200 mm. Smaller and larger sizes are available by request.

Like all products from KIWI® Wire Die are these products manufactured with the highest quality and accuracy standards.

The ND blanks that KIWI® Wire Die uses are all selected for purity and limited inclusions, flattened on a special lapping machine, and sorted in different groups of height and diameter combinations

Applicability and Product Use

Natural diamond (ND) has been used as a raw material for drawing dies for over 30 years and ND dies were the first type of drawing dies that were manufactured by the KIWI® Wire Die (since 1989).

Natural diamond dies are used for applications that require excellent wire surface qualities, high heat resistance, and in applications that require a die material that is not electrically conductive.

ND dies are frequently used for drawing:

 • Tungsten filament wire
 • Bonding wire (gold, copper, aluminum)
 • Medical wire
 • Stainless steel wire
 • Copper wire
 • EDM wire
 • Special alloy and high-performance alloy wire
 • Precious metal wire

 • Various other ferrous and non-ferrous metal wire types


Natural diamond can be chosen as a raw material for the following products from KIWI® Wire Die:

 • Wire drawing dies
 • Bunching, Stranding and Compacting dies
 • Extrusion tools
 • Burnishing dies




Get Started

Call now to learn how you can use KIWI® Wire Die ND dies for your fine-wire needs.

+86 13721013737