Hot rolled wire rod for cold heading steel

Name	Brand	Specifications	Executive standard	Chemical composition analysis (melting composition)%						Performance characteristics	Purpose
Name	Brand	Specifications	Executive standard	C	Si	Mn	P ≤	S ≤	Other	Performance characteristics	Purpose
Hot rolled wire rod for cold heading steel	SWRCH22A	F5.5-6.5	JIS G3507-1	0.18-0.23	≤0.10	0.70-1.00	0.030	0.035	Al≥0.02	Good metallographic structure, few surface defects, high purity of steel, high dimensional accuracy, low cracking rate of cold heading. The product performance is higher than the requirements of relevant standards.	It is mainly used for various fasteners, self tapping, weling nails and other standard parts.
	SWRCH25K	F5.5-20		0.22-0.28	0.10-0.35	0.30-0.60	0.030	0.035
	SWRCH35K	F5.5-24		0.32-0.38	0.10-0.35	0.60-0.90	0.030	0.035
	ML08Al	F5.5-24	GB/T 6478	0.05-0.10	≤0.10	0.30-0.60	0.035	0.035	Al≥0.02
	ML40Cr	F5.5-24	GB/T 6478	0.38-0.43	0.10-0.30	0.60-0.90	0.025	0.025	Cr 0.90-1.20

As the main raw material needed by the standard pieces manufacture industries, the cold heading steel, standard executed is GB/T6478—2001, is used to make work pieces in every specification such as bolt, screw, nut etc. Because of the large deformation in the process of cold heading, the steel grade is required to have less content of sulfur and phosphor, less impurity, excellent machining and mechanical performances and accurate rolling tolerances. Our company already could produce the cold heading steel wire coil for cold heading in grade of ML08,ML35 and ML40Cr with diameters range of φ5.5mm～φ16mm.

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