The black wire is made with low carbon steel ,though wire drawing,annealing and other processes.

The black  wire is made with international standard low carbon steel,though wire drawing,oxygen free annealing and other processes. The black wire has the characteristics of soft ,good corrosion resistance,suitable tensile strengh,etc.

 material:international standard choice mild low carbon steel wire (Q195)

 wire diameter:0.4mm-4.0mm BWG8-BWG22

zinc coating:10-25g/m2

tensile strengh:380-420kn/m2

elongation tate 10%-25%

packing:25-200kg/coil  plastic inside and hessian cloth/weaving bags outside

black iron wire
Gauge No.	SWG(mm)	BWG(mm)	Metric(mm)
8	4.05	4.19	4.00
9	3.66	3.76	4.00
10	3.25	3.40	3.50
11	2.95	3.05	3.00
12	2.64	2.77	2.80
13	2.34	2.41	2.50
14	2.03	2.11	2.50
15	1.83	1.83	1.80
16	1.63	1.65	1.65
17	1.42	1.47	1.40
18	1.22	1.25	1.20
19	1.02	1.07	1.00
20	0.91	0.84	0.90
21	0.81	0.81	0.80
22	0.71	0.71	0.70