SS cold heading wire sus304HC, SS cold heading wire, Screw use wire, nut used wire 201 202 302 304 316 302HQ 304HC 316L​

What is stainless steel cold heading wire?

Stainless steel wire is often used for the manufacture of screws, rivets, bolts and nails the wire is used cold in order to form the required shape. Cold heading is basically a way of forming wire into a given shape without the need for heat. The process involves striking blows to a length of wire inserted in a die.

The force of the blow or blows causes the metal to flow into a restricted die cavity. The head or upset portion of the part is generally larger in diameter than the original blank of wire and shorter in length. The processes can be more complicated to achieve the correct type of head or have additional shaping processes for example for a hexagon bolt head.

For stainless steel cold heading the most popular grades are in the 300 400 series as they cold head much like carbon and low alloy steels. Type 430 stainless is the easiest to head, The 300 series provides more challenges than the 400 series since alloys in the 300 group have a higher work hardening rate.

Stainless steels in the 300 series require more energy to head than those in the 400 series Grades 302 HQ and 304 Cu which are similar to standard grade 304 with the addition of copper and therefore are the easiest to head, 303 stainless steel is also used for its machining properties.

There are now many alternatives that incorporate a mixture of the key components of machi­nability, formability and corrosion resistance required for the perfect cold heading wire to meet the customer applications.

Toponewire is one of the largest stainless steel production manufacturer in Mainland.

We have been active in the production, processing and supplying of stainless steel productions to industries for over 20 years. As a leading supplier of stainless steel productions, our vast catalogue of products is export to over 50 countries worldwide and we ensure to hold enough stock to deliver minimal lead times, catering to the varying demands of our customers.

From our head factory in Ningbo, ZheJiang, we have provided stainless steel products and services to multiple sectors that span over the whole world. There is no limit to our reach as we continue to develop within growing markets and territories.

We are proud to work closely with industry and academic partners to continually improve our products and services, as a result, we have patented products designed to save you time and money. We operate within the scope of ISO 9001:2015 accredited management system and all the raw materials are procured from top level steelworks in China.

Our products are rigorously inspected to ensure they are within tolerance of our customer's specifi­cations, we work with accredited laboratories for specialised material testing and chemical analysis.

In addition, we use x-ray fluorescence technology to meet our high inspection standards and to ensure that our customers get the best quality products.