Hot-rolled round stainless steel in coils, typically 5.5–20 mm in diameter, supplied annealed and pickled to wire drawers. It is the raw material for stainless wire, springs, cold-headed screws and bolts, welding wire, mesh and wire rope.
Also called
SS wire rod
Stainless rod coil
Stainless wire rod coil
Cold heading wire rod
304HC
Welding rod coil
AR
قضبان سلكية (وايرود) من الفولاذ المقاوم للصدأ
ZH
不锈钢盘条
DE
Edelstahl-Walzdraht
FR
Fil machine en acier inoxydable
ES
Alambrón de acero inoxidable
IT
Vergella in acciaio inossidabile
TR
Paslanmaz çelik filmaşin
RU
Катанка из нержавеющей стали
Main formsHot-rolled coils, annealed and pickled; black (unpickled) for some ferritic grades
Typical sizesDiameter 5.5–20 mm (to about 40 mm in bar-in-coil); coils 0.5–2 t
Main standardsEN 10088-3, ASTM A555, ASTM A493, JIS G4308, GB/T 20878
Typical usesWire drawing, cold heading of fasteners, springs, welding consumables, mesh, rope wire
Overview
Wire rod is the smallest hot-rolled long product: a round section rolled at high speed on a rod mill and laid in rings, which are collected into coils. For stainless steel the coils are then solution-annealed (for austenitic grades) and pickled to remove scale, because the drawer needs a clean, soft, uniform surface.
Each end use calls for a different rod. Cold heading for screws and bolts needs a grade with low work hardening — 304 with added copper, sold as 304HC or 304Cu, or 302HQ — and very good surface quality. Spring wire needs high strength after drawing. Welding wire rod is melted to tight composition ranges for the filler metals 308L, 309L and 316L. Ferritic 430 and martensitic 410 and 420 rod go into fasteners, knives and appliance parts.
Wire rod is supplied by integrated stainless producers in China, India, Korea, Japan, Taiwan and Europe. Regional fastener, mesh and welding wire producers in the GCC import most of their stainless rod, mainly from Asia.
Forms & sizes
Rod is ordered by diameter, grade, condition and end use; the end use matters because the mill controls the chemistry and surface differently for cold heading, spring or welding grades.
Diameters
5.5, 6.0, 6.5, 7.0, 8.0, 9.0, 10, 12, 14, 16 and 20 mm are common
Condition
Annealed and pickled (most austenitic grades); annealed or as-rolled for ferritic and martensitic grades
Coils
Typically 0.5–2 t, strapped, with tags giving heat number, grade and size
Bar-in-coil
Larger diameters, about 16–40 mm, coiled for straightening and cutting