Resources

Short guides and calculators for buying steel wire, each with the answer first and the sources checked.

Tools

Charts and calculators you can use on the page.

Wire gauge chart: BWG, SWG to mm and inchA wire gauge number is not a diameter.
Wire weight calculator: kg per km of steel wireThe mass of a round steel wire is π/4 × d² × ρ, with d the diameter in metres and ρ the steel density, 7850 kg/m³.

Short answers on coatings, standards, grades and loading.

Black annealed vs galvanized tie wireBlack annealed tie wire is soft steel wire without a zinc coating, made to be twisted easily by hand.
Container loading for wire coilsHow many tonnes of wire coils fit in a container depends on the coil weight, the packaging and the container's weight limit, and it is confirmed per order.
Hot-dip vs electro-galvanized wireHot-dip galvanized wire is coated by dipping it in molten zinc, and electro-galvanized wire by depositing zinc with an electric current.
Spring wire standards: EN 10270-1 and ASTM A227Spring wire is made to a standard that sets the wire type, its properties and its quality.
Zinc coating classes: EN 10244-2 and ASTM A641EN 10244-2 and ASTM A641 both set the zinc coating mass per square metre of wire surface by class and diameter, but each standard defines its classes separately.

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