Classified by chemical composition

（C%）

Low carbon steel wire

Medium carbon steel wire

High carbon steel wire

≤ 0.25

＞ 0.25 — 0.60

＞ 0.60

Classified by tensile strength

（Kg/mm2）

Low intensity

Lower strength

General strength

Higher strength

high strength

＜ 40

40 — 80

＞ 80 — 125

＞ 125 — 200

＞ 200 — 320 

Classified by purpose

Ordinary quality wire

Cold forging wire

Electrical wire

Wire for the textile industry

Steel wire

Spring steel wire

Steel wire for shoemaking

Structural steel wire

Tool wire

Steel wire

General purpose, welding, repair welding, wire, brazing, for bandaging, split pin, net making, nail making, chain. for packaging, printing and printing

For rivets, bolts, screws, other uses

For steel core aluminum stranded wire, armored cable, cable, armature, cable ties, overhead communication lines, iron stranded wires

Cards, Healds, Bobbins, Combs, Needles

For steel ropes, spokes, signalers

Various springs, spring washers, strings, tires

For screws and flat wires

Watch industry, ball use, other uses

Taps, parts, needles

For concrete structures and prestressed concrete structures