Galfan wire is a special galvanized annealed wire with a hot dip coating of a metal alloy (5% aluminum and 95% zinc alloy) material. It is especially suitable for outdoor, humid and oceanic climate. The alloy zinc coating sprayed steel wire has strong ductility and deformability. The galfan wire can be processed technically by deforming, winding or bending without cracking and shedding of zinc layer. It is used primarily for mesh gabions and fencing processing.
The Galfan coating provides enhanced corrosion resistance and durability for the steel wires, making Galfan coated wire well-suited for various applications, particularly in industries where corrosion protection is crucial.
Processing
Zinc-aluminum alloy coated steel (Galfan) wire is made of 6.5 mm low-carbon steel wire by drawing, high-temperature annealing, pickling and rust removing, hot-dip galvanizing with zinc-aluminum alloy.
Wire diameter ranges from 1.24mm-5.5mm.
Galfan coatings can be Al 5%, Zinc 95%, or Al10%, Zinc 90%.
Corrosion resistance: about 2-3 times that of ordinary galvanized steel wire
Coating material: Zinc aluminum alloy
Coating process: Thermal spraying
Major Products ( Classified according to wire sizes and packing forms)
Galfan steel wires in sizes 0.5 mm to 5 mm, for wire rope manufacturer
Galfan wire, material medium carbon steel wire, 95% Zn / 5% Al coated
Tensile Strength of Wire (MPa) | 900 | 900 | 900 |
Carbon Contain | Medium | Medium | Medium |
Wire Diameter (mm) | 3.4 | 4.0 | 4.5 |
Tensile Resistance of Wire (kN) | 8.2 | 11.3 | 14.3 |
Coating | 95% Zn / 5%Al | 95% Zn / 5%Al | 95% Zn / 5%Al |
Coating Thickness (gr/m2) | > 265 | > 300 | > 300 |
Galfan Coated Wire (Zn95% & Al 5%) Diameter 3.05 mm with Different classes of coating:
Sr | Product Size | Tensile Strength | Galfan Coating |
1 | Dia. 3.05mm - Galfan Class 3 coating | Max 485Mpa | Min 259g/m2 |
2 | Dia. 3.05mm - Galfan Class 1 coating | Max 485Mpa | Min 92g/m2 |
Galfan Wire Coils for Galfan Gabions
Galfan wire as excellent corrosion resistant material, is mainly used for producing of wire meshes, especially galfan gabions.
Individual Galfan(zn-al alloy) Steel Wire, with 245 GSM zinc coating 95% and Aluminium Coating 5%, for welded mesh gabions.
Tensile strength: Min. 550 N/sqmm.
Wire dia required: 4mm, 4.5mm, 5mm.
Packing: In big coils 50 to 500kg.
Galfan PVC coated wire, Knitted wire for galfan gabions: 3.7mm with PVC coating (2.7mm heavy Galfan core wire), with a heavy GALFAN (ZnAL) coating of min 245gr/m2. Finished gabions: 80x100mm hexagonal woven mesh galfan gabions
Packing: Coils Weight 500kgs.
Galfan Wire (Aluminium-Zinc Alloy coated)
Wire for Wire Rope Manufacture
Size: 2.5mm, 3.0mm
Al: 5-10%
T/S: 115~120kg/mm2
Weight of coating: 280- 320g/m2
Other factors such as Torsion and Elongation.. JIS G 3521.
Galfan Wire of ASTM B 958, ASTM B 857, ASTM B 750 Standard
Appearance: Smooth surface, no harmful defects, no crack.
Diameter: 3.16 ㎜ ± 0.051 ㎜.
Chemical composition of steel:
| C | Mn | P | S | Si |
| 0.5 ~ 1.00 | 0.40 ~ 1.30 | ≤ 0.035 | ≤ 0.045 | 0.15 ~ 0.60 |
Chemical composition of galfan coating:
| Al | Ce + La, total | Fe | Si | Pb | Cd | Sn | Others, each | Others, total | Zn |
| 4.2 ~ 6.2 | 0.03 ~ 0.10 | ≤ 0.075 | ≤ 0.015 | ≤ 0.005 | ≤ 0.005 | ≤ 0.002O | ≤ 0.02 | ≤ 0.04 | Remainder |
Tensie strength: ≥ 1.86 ㎬
1% tensile stress: ≥ 1.52 ㎬
Eleongation: ≥ 3.5%
Modulus of elasticity: 21,000kgf/mm2 (Reference value)
Thermal expansion coefficient: 11.5 x 10-6/oC (Reference value)
Density: 7.78 g/cm3(Reference value)
Mass of Zn coating: ≥ 259 g/㎤
Wrap test: Not break 4D x 8Turns
Adherence of coating test: No crakcing or flaking the coating.
Galfan Wire Stranding
Appearance: Surface is smooth, no cracks.
Grease: Grease shall be applied on stranded wire including center wire.
Stranded wire diameter: 9.48mm.
Direction of outer strand: Right hand.
Lay ratio: 16~26 times.
Weight without grease:430 kg/km about.
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