Wire Drawing Dies

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Wire Drawing Dies usually refer to various dies for drawing metal wiresAnchor icon and optical fibers, wire die are typically made of tool steel, tungsten carbide, or diamond. All drawing dies have a hole in the center with a certain shape, round, square, octagonal, or other special shapes. When the metal is pulled through the wire die hole, the size becomes smaller and even the shape changes.

According to different materials, wire drawing dies can be divided into alloy steel dies, tungsten carbide dies, natural diamond dies, synthetic single-crystal diamond dies(SSCD), polycrystalline diamond(PCD) dies, CVD diamond dies, and ceramic wire die.

Wire drawing dies has a wide range of uses and can draw a variety of metal wires, such as high-precision wires used in the electronics, electrical appliances, and aerospace industries, and commonly used tungsten wires, molybdenum wires, stainless steel wires, cable wires, and various alloy wires.

UKO's Wire Drawing Dies

Product Category

Polycrystalline Diamond (PCD) Dies for Wire Drawing that can be used for ferrous and non-ferrous Wire Drawing Applications. Sizes are available for drawing applications ranging from ultra-fine wire to largely drawn rod. This size range includes 0.040 to 35 mm (0.00157 – 1.378″). PCD Dies offer a high resistance to wear and an excellent wire surface finish.

Copper wire, Aluminum wire, Tungsten wire, Molybdenum wire, Stainless steel wire, Coated steel wire, Special alloy and high-performance alloy wire, Precious metal wire, Various other ferrous and non-ferrous metal wire types.


Benefits Key Features
  • Long-lasting, reducing the number of shutdown detection and die change, improving production efficiency.
  • A wide range of available particle sizes and billet sizes. Customized as per customers’ requirements.
  • Smooth surface finish and low friction with wire, protect the surface of the working piece well.
  • Better wire roundness and highly predictable die-wear performance can be obtained.
  • Ideal for drawing low carbon steel wire.
  • Usable with dry and wet drawing
  • Available in any casing size
  • Various grain sizes available
  • Dies available for high-temperature applications
  • Tight-tolerance dies available
  • Punch/Hammer with plan or serrated


  • YG6 (WC: 94%, Co: 6%): It has high wear resistance and good strength and toughness. Hardness special shape. When the metal is pulled through the die hole, the size becomes smaller and even the shape changes. The core of the hard alloy wire drawing die is generally tungsten cobalt hard alloy. Not less than 89.5HRC, suitable for non-ferrous metals or wire drawing rods of various specifications.
  • YG6X (WC: 94%, Co: 6%): It is the hardest and lowest strength of the tungsten-cobalt alloy, Wear resistance is the best, but toughness is the worst. Hardness not less than 92HRC, suitable for drawing wire of thin gauge wire (preferably below 0.6mm) with a diameter of 20mmMPa, the hardness of nonferrous metals and their alloy wires.
  • YG8 (WC: 92%, Co: 8%): Has higher toughness and impact resistance than YG6, but its wear resistance and hardness are worse than YG6, and its hardness is not less than 89HRC. It is suitable for wire rod and pipe drawing die ( The diameter is less than 50mm).
  • YG10: The strength is 2400MPa, the hardness is not less than 88.5HRA, it is used to make wire drawing dies for drawing steel and non-ferrous metal round bars and pipes.
  • YG15: The strength is 2800 and not less than 87HRA. It is used to make steel rods and pipes with high shrinkage.

Model Recommendation:

Name Type Steel Sleeve size Die Hole Size Use
Round drawing die U10 25*12 / 28*16 Ø0.25~Ø0.8 Drawing black nonferrous metal wire
U11 28~40*12~28 Ø0.4~Ø5.7 Drawing ferrous metal wire
U12 25~50*1028 Ø0.4~Ø8.0 Drawing ferrous metal wire
U13 66~220*35~80 Ø3.7~Ø84.0 Drawing black nonferrous metal rods
US11 28~40*12~28 Ø0.4~Ø5.7 Large compression angle die for drawing black nonferrous metal wire
US13 66~220*35~80 Ø3.7~Ø84.0 Large compression angle die for drawing black metal wire rod
UW1 24~230*12~90 Ø0.5~Ø55.0 Large entrance angle die for drawing black nonferrous metal wire
U20 32~190*22~75 Ø2.0~Ø60.0 Pipe wall reducing mold
U21 98~190*55~70 Ø20.0~Ø62.0 Pipe wall reducing mold
U22 45~220*25~75 Ø3.0~Ø90.0 Drawing non-ferrous metal pipe mold
U23 98~200*55~75 Ø20.0~Ø70.0 Dual-purpose mold for reducing pipe diameter and wall
Shaped drawing die U40 33~200*20~70 Ø1.8~Ø55.0 Drawn square bar
U41 66~135*30~50 Ø6.7~23.6*Ø4.7~14.7 Drawing flat material mold
U42 40~135*20~35 Ø1.9~32.0~Ø1.0~6.5 Drawing rectangular material mold
U60 66~200*30~70 Ø2.5~Ø75.0 Drawing hexagon material mold
Drawn tube mandrel U30 28~64*27~35 Ø17.0~Ø28.0 Dies for drawing seamless steel tubes
U31 14~47*25~45 Ø7.0~Ø26.4
Round straight mold coating mold QN4710~QN4716 8.5*12 Ø3.2~Ø5.5 For the production of welding electrodes
QN105~QN1033 15*20 Ø1.5~Ø7.0
Drawn tube mandrel Flathead die / / Cold heading, cold punching copper, aluminum, alloy steel standard parts, screws, rivets, etc.
Countersunk mold / /
Shrink-rod mold / /
Peeling mold UQC1 / Ø3.0~Ø30.0 It is suitable for peeling scales before drawing black nonferrous metal wires, rods, and pipes
UQC2 / Ø32.8~Ø50
Wire feed wheel flywheel Ø136 Ø150 Ø160 For the production of welding electrodes

Diameter Reference:

Wire drawing die regular specification

Case size(D * H)mm Nib size (D * H)mm Hole size mm Tolerance range mm
25*12 9*6 0.15~0.5 0~0.02
30*16 13*10 0.5~2.6 0~0.02
32*23 16*13 0.8~3.5 0~0.02
32*23 16*14 1.0~3.5 0~0.02
40*25 20*17 1.5~6.5 0~0.02
40*26 22*18 1.8~6.5 0~0.02
50*28 25*20 3.0~9.5 0~0.02
70*35 30*22 5.5~12.5 0~0.02
75*35 35*25 8.5~16.5 0~0.02
80*35 40*25 16.5~21.5 0~0.02
110*45 50*28 21.5~24.5 0~0.02
120*50 60*35 24.5~34.5 0~0.02
130*60 70*35 34.5~43.5 0~0.02
140*60 80*35 34.5~45.5 0~0.02
150*60 90*35 45.5~51.0 0~0.02
160*75 100*40 51.0~56.0 0~0.02
170*75 110*40 57.0~65.0 0~0.02
180*80 120*45 66.0~69.0 0~0.02
190*85 130*50 70.0~76.0 0~0.02

The nano-diamond composite coating drawing dies is based on cemented carbide (WC-Co) as the substrate, and chemical vapor deposition (CVD) is used to apply micro-level and nano-level diamond composite coating on the surface of the inner hole of the die. After precision grinding and polishing of the coating, a new mold is obtained.

The micro-nano composite coating on the surface of the inner hole not only has the characteristics of strong adhesion and good wear resistance of the micron diamond coating but also has the advantages of high surface finish of the nano-diamond coating, small friction coefficient, and easy grinding and polishing.

Our product advantages:

  • Targeted pre-treatment process: make the coating and the substrate tightly combined
  • Bottom micron diamond coating: excellent wear resistance
  • Surface layer nanometer diamond coating: excellent surface finish and low friction coefficient
  • Computer simulation to optimize the hole design: make the force of the wire evenly
  • Life: drawn aluminum wire is more than 30 times that of tungsten carbide dies; drawn low carbon steel wire is more than 20 times of T.C drawing dies; drawn medium carbon steel wire is more than 30 times of carbide dies.
  • Aperture change when the mold is scrapped: 0.00 mm, free of drawing dies repair
  • The working surface has a high finish and is always the same
  • High dimensional accuracy
  • Reduce the number of shutdown inspections and drawing dies changes, and improve production efficiency
  • It saves raw materials, and the length of the metal wire produced is 1% to 2% longer than that produced by traditional drawing dies.
  • Improve product quality (because the working surface has high smoothness and high dimensional accuracy)

High-performance synthetic single-crystal diamond dies core (SSCD) is suitable for cold drawing and hot drawing of various metal wires. It has a very high drawing finish, long service life, and a reasonable price makes the single-crystal diamond wire drawing die core a variety of drawing Ideal for high-end products.

Diamond is a crystal of a single carbon atom, and its crystal structure belongs to the equiaxed face-centered cubic crystal system (a crystal system with the highest atomic density).

Because the bond between carbon atoms in diamond is sp3 hybrid covalent bond, it has a strong bonding force, stability, and directionality. It is currently the hardest substance known in nature, and its microhardness can reach 10000HV.

Artificially manufactured single-crystal diamond not only has good performance compared to natural diamond but also has isotropy that is impossible with natural diamond. It has high hardness, good wear resistance, high strength, good thermal conductivity, and coefficient of friction with non-ferrous metals. Low, good adhesion resistance, excellent corrosion resistance, and chemical stability. It has an important position and is widely used in the field of mechanical processing, especially in the field of ultra-precision processing.

Due to the physical properties of a single crystal diamond, the tools manufactured by it have good surface quality and good surface finish, making it an ideal material for manufacturing wire drawing dies.

Synthetic Single-crystal Diamond Dies Core Size

MD-06 MD-07 MD-08 MD-09 Monocrystalline wire drawing die sketch
MD-10 MD-11 MD-12 MD-13
MD-14 MD-15 MD-16 MD-17
MD-18 MD-19 MD-20

Product Overview

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UKO Various Type Drawing Copper Wire PCD Diamond Wire Drawing Dies

PCD Diamond Wire Drawing Dies Suitable for Drawing Coated Steel Wire

PCD Diamond Wire Drawing Dies Suitable for Drawing Coated Steel Wire

Hole 1.61 4.6mm Steel Case 30x15mm PCD Dies for Copper Wire

Hole 1.61 4.6mm Steel Case 30x15mm PCD Dies for Copper Wire

Factory Long Working Life PCD Wire Drawing Die for Alloy Wire

Factory Long Working Life PCD Wire Drawing Die for Alloy Wire

Solid Carbide Steel Wire Hard Alloy Wire Drawing Die for Hb Wire

Solid Carbide Steel Wire Hard Alloy Wire Drawing Die for Hb Wire

High Wear Resistance Cemented Carbide Wire Drawing Die for Drawing Steel Linear

Tungsten Cemented Carbide Copper Wire Drawing Die

Factory Manufacture yg8 yg6 Tungsten Carbide Die of Wire Drawing

Factory Manufacture yg8 yg6 Tungsten Carbide Die of Wire Drawing

All Kinds Standard Wire Drawing Die for Mild Steel

All Kinds Standard Wire Drawing Die for Mild Steel

Related Product

Wire Drawing Lubricant Powder

Wire drawing powder, also called wire drawing lubricant powder, is usually divided into calcium-based and nano-based. In the process of wire cold drawing deformation, wire drawing powder can play a lubricating role, reduce friction, reduce energy consumption, and prolong the service life of wire drawing die. In the drawing process, a lubricating film can also be formed on the surface of the steel wire, which can protect the steel wire.

Wire manufactures have different processes, the type of wire drawing machine may in “water cooling”, “air cooling”, “straight-in” or “pulley drawing” type. The drawing speed, the quality of the wire drawing dies, the material of the drawn wire, the finished wire, steps of drawing dies all require different wire drawing lubricant powder. So some drawing processes use 2 or 3 types of drawing powder, some even need to match a new material in use.

Related Content

Penny Peng

Penny Peng

Marketing Director

“ Prompt Feedback and Professional Service. ”

(86) 137 5507 9029
What’s your minimum quantity of an order?2021-07-21T10:00:28+00:00

Our MOQ is 1 ton.

What kind of wire drawing powder do you have?2021-07-30T08:34:40+00:00

UKO offer sodium based series and calcium based series wire die products.

What are the differences between T.C drawing dies and PCD drawing dies?2021-07-21T09:53:33+00:00

T.C drawing dies are made from tungsten carbide,PCD drawing dies are made from Polycrystalline Diamond. The life span of PCD is 10 times longer than T.C drawing die, and PCD drawing dies are more expensive than T.C drawing dies.

What material is recommended for wire drawing dies steel sleeve?2021-07-30T08:36:01+00:00

For the steel sleeve of wire die, we recommend 45# Steel, or we can accept customization.

Can the inner drawing dies hole of the nib be polished?2021-07-21T14:36:36+00:00

Yes,the tolerance of drawing dies hole size can range from 0mm to -0.02mm.

carbide blank dies

carbide blank dies

finished carbide dies

finished carbide dies

What type of drawing dies is recommended for wire diameter of 1.5 mm?2021-07-21T09:28:24+00:00

It is recommended to use wire drawing dies core 15*13mm, finished die core (NIB size) 15*13mm and steel sleeve (case size) 40*25MM.

I want to draw low carbon steel wire, do you have any recommendation?2021-07-21T09:24:00+00:00

Carbide drawing dies grade YG6 is for drawing low carbon steel wire, YG6X is drawing high carbon steel wire, and YG8 is suitable for both of them.

What are the types of core materials for drawing dies?2021-04-25T02:45:50+00:00

The wire drawing die industry has experienced decades of development, and many new core materials for wire drawing dies have emerged.

According to the types of materials, the wire drawing dies can be divided into alloy steel dies, tungsten carbide dies, natural diamond dies, polycrystalline diamond dies, CVD diamond dies and ceramic dies.

The development of new materials greatly enriches the application range of the wire drawing die and increases the service life of the wire drawing die.

Comparison of the advantages and disadvantages of various drawing die materials:

Drawing dies material Advantage Disadvantage Application
Alloy steel drawing dies Easy to make Poor wear resistance and short life Basically eliminated
Natural diamond drawing dies (ND Drawing Dies) High hardness and good wear resistance Brittle and difficult to process Used to manufacture wire drawing die cores with a diameter of less than 1.2mm
Tungsten carbide drawing dies (TC Drawing Dies) Good polishability and low energy consumption Poor wear resistance and difficult processing Various diameter wires
Polycrystalline synthetic diamond drawing dies (PCD Drawing Dies) High hardness and good wear resistance Difficulty in processing and high cost Small wire, metal wire
CVD coating material drawing dies (CVD Drawing Dies) High finish, good temperature resistance Complex process, difficult to process
Ceramic material drawing dies Wear resistance, high temperature resistance, good corrosion resistance Thermal shock, poor toughness, difficult processing No large-scale application
What is the work area structure of the drawing dies and function?2021-07-21T02:56:18+00:00

Structure of the wire drawing dies coreThe structure of the wire drawing dies core can be divided into five sections according to the nature of the work:

  • Bell Radius: It is convenient to thread and prevents the wire from scratching the drawing dies from the entrance direction.
  • Entrance Angle: Through it, the steel wire can be easily brought into the lubricant.
  • Approach Angle: The main part of the die hole, where the deformation process of the steel wire is carried out, that is, the original section is reduced to the required section size.
  • Land: Its function is to obtain the exact size of the drawn wire.
  • Back Relief: Used to prevent the steel wire from being unsteady and scratching the surface of the steel wire.

The inner diameter profile of the drawing dies is very important, it determines the tension which is required to compress the wire and affects the residual stress in the wire after drawing.

With the increase of the wire drawing speed, the service life of the wire drawing dies has become a prominent problem. Americans T Maxwall and E G Kennth proposed a new wire drawing dies hole pattern theory suitable for high-speed wire drawing, that is, the “straight line” theory. The wire drawing dies made according to this theory has the following characteristics:

  • The entrance area and lubrication area are combined into one, which has a tendency to reduce the lubrication angle so that the lubricant is subjected to a certain pressure before entering the working area, so as to achieve a better lubrication effect.
  • The entrance area and working area are lengthened to establish a better lubrication pressure, and the angles are optimized according to the drawing material and the compression rate of each pass.
  • The sizing area must be straight and reasonable in length.
  • The vertical line of each part must be straight.

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