CHQ Wire

CHQ Wires Application

Cold Heading Quality (CHQ) Wires is a kind of steel wire that is fabricated by drawing or annealing special steel rods. As we know Cold Heading Quality (CHQ) Wires manufacturing process primarily employs the concept of altering the initial steel “blank” through force, using a series of tools and dies to change the blank into a finished product.

The manufacturing of the Cold Heading Quality (CHQ) Wires involves two important procedures named HRPPD (Hot Rolled Pickling, Phosphating and Drawing) & SAPPD (Spherodized Annealed, Pickling, Phosphating, and Drawing) are used to make the high-quality CHQ Wires with precision. The major applications of CHQ wire include Fasteners, Cold Forged Parts, Bearings, production of coupling parts such as bolts, nuts, and small screws, and parts for machines.

The predominant reasons to use CHQ Wires in innumerable projects are due to its inherent qualities as they provide a smooth surface and improved tool life in forging, Spheroidized Annealing in nitrogen atmosphere resulting in zero decarburization, Closer tolerances in drawing from proper input sizes, and also to avoid ovality, Minimum 90% spheroidization and uniform grain size.

Applications of CHQ Wires


CHQ wires are used in several industries like Automotive, Infrastructure, Appliances, and Other Industries for cold forging and fastener applications. In general, fasteners have been made using thread cutting or by the hot working method. However, due to the change in trend, nowadays the use of the cold working process to enhance productivity and to keep the cost down is quite common in fastener applications.The chief attractions of this process consist of good surface finish and dimensional accuracies to the fasteners. The cold heading process generates great hardness divergences in areas with dissimilar deformation ratios. Hence, an adequate balance of deformation, wire rod diameter, and equilibrated mechanical features of the raw material is required to minimize the scattering of the fastener properties.Examples are Flange Bolt, Bihex Flange Bolt, Wheel Hub Bolt, Serrated Screws, and Piston Rod. These are also used in general engineering industries due to its high tensile nature along with extra strength and fatigue resistance required for total reliability in high strength fastening.

Cold Forged Parts

Another application of CHQ Wires includes producing near-net-shape cold forged shafts of various diameters with precise tolerance. As we know, Cold forging is one of the most widely used chipless forming processes of bulk material at room temperature with no heating of the initial slug or inter-stage often requiring no machining other than drilling. Near net shape forging reduces machining efforts leading to reduced cost, also leads to an uninterrupted gain flow resulting in enhanced fatigue strength. The application of CHQ Wires in Cold Forged Parts gives you the highest performance, reliability, and long life in your product.


Bearings are simple machines found in all those instruments and machines, which roll or tend to roll and are responsible for making the things roll. If there were not bearing, then we would be constantly replacing machines parts and instruments wore out from friction. Bearings have made several things in our life possible. The application of CHQ wire in bearings generates outstanding forgeability and consistent results that completely offer efficiency and better tool usage for customers.

Tie rods

Apart from the Fasteners, Bearings, Cold Forged Parts, Cold Heading Quality (CHQ) Wire is also a key element in tie rods that is used in the automobile, defence, construction, electronics & aerospace industry.
CHQ Wire is rigorously tested and then used in production to ensure its flawlessness, durability, and unmatched quality. The CHQ wire is highly recommended due to its remarkable characteristics that include rugged construction and anti-corrosive nature. These wires offer Fine finishing, accurate dimensions, and outstanding strength.

High tension bolts for wings

Another important application of Cold Heading Quality (CHQ) Wires can be seen in the aerospace industry. It is used to make High-tension bolts for wings, as it possesses striking workability and surface quality.

Spring industry

Cold Heading Quality (CHQ) Wires are also widely used in spring industry wires. Its increased tensile strength, hardness, toughness, and fatigue resistance, design versatility due to the cold working make it a preferred choice for springs.


Grade Chemical composition of various steel-grades
C% Mn% SI% Cr% Cu% S% P% B% Ni% Mo%
SAE 1006 0.08 Max 0.35 Max 0.10 Max 0.050 Max 0.040 Max
SAE 1008 0.10 Max 0.30-0.50 0.35 Max 0.030 Max 0.030 Max
SAE 1010 0.08-0.13 0.30-0.60 0.35 Max 0.030 Max 0.030 Max
SAE 1015 0.12-0.18 0.30-0.60 0.35 Max 0.030 Max 0.030 Max
SAE 1018 0.15-0.20 0.60-0.90 0.35 Max 0.030 Max 0.030 Max
SAE1022 0.17-.023 0.60-0.90 0.35 Max 0.030 Max 0.030 Max
SAE 10B21 0.18-0.23 0.80-1.20 0.35 Max 0.20 Max 0.030 Max 0.030 Max 0.0005-0.0035
SAE 15B25 0.23-0.28 0.90-1.30 0.35 Max 0.20 Max 0.030 Max 0.030 Max 0.0005-0.0035
SAE 15B41 0.36-0.44 1.35-1.65 0.15-0.30 0.030 Max 0.030 Max 0.0005-0.0035
19MnB4 0.20-0.26 0.80-1.10 0.30 Max 0.30-0.40 Max 0.050 Max 0.40 Max 0.0005-0.0035
C-35 0.30-0.40 0.50-0.80 0.15-0.35 0.050 Max 0.040 Max
HC 46-50 0.46-0.50 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC51-55 0.51-0.55 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC 56-60 0.56-0.60 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC 61-65 0.61-0.65 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC 66-70 0.66-0.70 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC 71-75 0.71-0.75 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
HC 76-80 0.76-0.80 0.50-0.80 0.15-0.35 0.035 Max 0.035 Max
SAE 1541 0.36-0.44 1.35-1.65 0.15-0.30 0.030 Max 0.030 Max
SAE 4140 0.38-0.43 0.75-1.00 0.20-0.35 0.80-1.10 0.040 Max 0.040 Max 0.15-0.25
SAE-8620 0.18-0.23 0.70-0.90 0.20-0.35 0.40-0.60 0.040 Max. 0.040 Max. 0.40-0.70 0.15-0.25
SCM-420 0.18-0.23 0.60-0.85 0.15-0.35 0.90-1.20 0.030 Max. 0.030 Max. 0.15-0.30
EN-42 0.70-0.85 0.55-0.75 0.10-0.40 0.050 Max. 0.050 Max.
EN-19 0.35-0.45 0.50-0.80 0.10-0.35 0.90-1.50 0.050 Max 0.050 Max. 0.20-0.40
EN-31 0.90-1.20 0.30-0.75 0.10-0.35 1.00-1.60 0.050 Max 0.050 Max
EN 8D 0.40-0.45 0.70-0.90 0.05-0.35 0.060 Max 0.060 Max

Material Specification Of CHQ Wires

Diameter (mm) 0.8 to 32mm
Weight ( in kgs) 100, 150, 200, 500, 1000
Inner – Dia Meter ( mm ) 500 & 900
Outer – Dia Meter ( mm ) 900 & 1200
Packaging Material Haisen Cloth, HDPE

Parameters like UTS ( Ultimate Tensile Strength), Hardness are given as per custom specification


  • Fasteners & Cold Headed Components
  • Ball Bearings
  • Spring Industry
  • Main Applications Are In The Automotive And Engineering Industries
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