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Hot Dip Galvanized Steel Wire - Class A, B and C Coating, B Coating ASTM A-475

We manufacture and export high carbon galvanized steel wire with zinc coating class B and class C according to the ASTM A-475, used for making of galvanized mesh fences and other heavy zinc coating wire products.

Galv. steel wire C coating
Wire diameter: 2.15mm/2.45mm/2.80mm and 3.90mm
Zinc coating: ASTM A641 for the zinc layer.

Galvanized steel wire B coating according to specifications below
B coat: Wire diameter 2mm to 4.00mm

Hot Dip Galvanizedsteel wire Class A, B and C
Wire diameter 1.24 to 5.50 mm

ASTM A-475 technical specifications

Material
Steel–The wire must be good quality with chemical composition properly to attend the requirements of uniformity, ductility, tensile strength and elongation.

Zinc–residual concentration fine type.

Finishing
Zinc layer must be uniform and smooth. White corrosion is not permitted.
Joints(splices) Joints are not permitted.
Nominal Diameter Tolerances

Table 1 - Tolerances
Nominal diameter of the wire (mm)		Tolerance (mm)
From	Till	less	plus
1,54	1,90	0,03	0,04
1,91	3,05	0,05	0,05
3,06	3,56	0,05	0,08
3,57	5,50	0,08	0,10

Tensile Strength and Elongation


Mechanical Properties
Wire diameter(mm)		Tensile Strength (Mpa)				Elongation at breaking point in 254mm (10") %
From	Till	Class A		Class B and C		Class A, B and C
		Min	Max	Min	Max	Min	Max	Min	Max
1,24	2,28	1310	1702	1245	1637	5		8
2,29	3,05	1274	1666	1210	1603	5		8
3,06	3,56	1274	1666	1210	1603	5		8
3,57	5,50	1247	1639	1185	1577	5		8

Ductilityand adherence of the zinc layer

Ductility – The wire must not break during the winding test.

Adherence of the zinc layer – After the test the wire MUST NOT show any crack releasing zinc layer.

The mandrel selected for the test must have diameter equivalent maximum to 3 times the wire diameter.

Weight of Zinc Layer

Table 4 – Weight of Zinc Layer
Nominal Diameter of the wire (mm)		Minimum Zinc Layer Weight (g/m²)
From	Till	Class A	Class B	Class C
1,54	1,90	200	400	458
1,91	2,28	215	430	549
2,29	2,63	230	460	641
2,64	3,04	245	490	732
3,05	3,56	260	520	778
3,57	3,90	275	550	824

Cast-Helix of the wire

Table 5 – Cast-helix
Spire Diameter - CAST (mm)		Edges Distance - HELIX (mm)
Min	Max	Min	Max
650	850	0	100

Inspections and Tests

Visual inspection
Inspection for any physical damage,
Manufacturer’s test and inspection certificate will be supplied with each lot
All test to ensure that the goods supplied are as per technical specification.