Cold Heading Steel Wire

Cold forging steel wire is ideal for forming parts like bolts, nuts, and screws at room temperature.
The wire is drawn through dies and coiled, then treated to withstand harsh forming conditions without heating.
We provide this material widely used for critical automotive parts such as engine and suspension components, offering excellent workability, stable quality, and cost efficiency.

Key Features

Wide Range of Steel Grades and Sizes

We offer a lineup of steel grades corresponding to carbon content, such as SWRCH10K to 35K, with wire diameters available from fine to thick.
Contributing to Weight Reduction

By applying heat treatment technology, we achieve high-strength standards for public regulatory steels. For bolt wires, our patenting technology enhances strength and improves resistance to delayed fracture through microstructure control.
Softening Technology

To accommodate complex shapes and multi-stage plastic deformation in cold forging, we optimize annealing frequency and conditions. This improves crack resistance during cold forging and reduces forging load.
Support for Carbon Neutrality

Using microstructure control through patenting technology, we have developed wires that meet specified strength levels without requiring the quenching and tempering process. This innovation helps reduce CO₂ emissions in customers' production processes, contributing to carbon neutrality.

Applications

Automotive Industry

Bolts, studs, flange screws, shaft components, and more.
Industrial and Construstion Machinery Industry

Gear and bearing-related screws and fasteners
Electronics & Electrical Equipment Industry

Electronic circuit board fasteners, cooling system fasteners, internal structure screws for home appliances.

Product Specifications

Steel Grade		Cold Heading Carbon Steel	Cold Heading Alloy Steel	Cold Heading Boron Steel	Non-tempered Steel	Soft Magnetic Material
Applicable Public Standards	JIS	G3507-2	G3509-2	G3508-2	ー	ー
Applicable Public Standards	SAE	J403 J1249	J403 J1249	ー	ー	ー
Non-standard / OEM Specifications		KCH KTCH (Annealing Omitted) KECH KNDS (High-Strength Grade)	ー	OEM-Specific Grades (e.g., SB25, 10B23M, MNB123H)	KNCH LH Wire	ELCH（Pure Iron-based Grade）
Cross-Section Shape	Round Wire (Size Range)	⚪︎ （0.5〜55.0）	⚪︎ （0.5〜55.0）	⚪︎ （0.5〜55.0）	⚪︎ （2.0〜19.0）	⚪︎ （0.5〜47.0）
Cross-Section Shape	Shaped Wire	ー	ー	ー	ー	⚪︎
Surface Treatment	Lime Coating	⚪︎	⚪︎	⚪︎	⚪︎	⚪︎
	Zinc Phosphate Coating	⚪︎	⚪︎	⚪︎	⚪︎	⚪︎
	Non-Phosphated Coating	⚪︎	⚪︎	⚪︎	⚪︎	⚪︎
Heat Treatment	Annealing	⚪︎	⚪︎	⚪︎	ー	⚪︎
	Patenting	ー	ー	ー	⚪︎	ー
	Quenching and Tempering	⚪︎	ー	ー	ー	ー

Spring Steel Wire Inorganic Polymer
Coagulant