Photo · wire-macro · 1:1
Low carbon · SAE J403
The softest grade we draw — made to be bent, headed and upset without cracking.
C8IS 1079 gradeØ 4 – 19 mm
Why this grade
With carbon at or below 0.10 %, the steel is almost pure ferrite. It work-hardens slowly, which is exactly what a cold header wants when it squeezes a wire slug into a rivet or a small screw.
Rivets and small cold-headed screws
Wire mesh and welded fabric
Bent and formed wire parts
Nails and staples
Behaviour
Cold heading5/5
Machinability2/5
Hardenability1/5
Strength potential1/5
Relative comparison across the grades we supply.
Chemistry
C≤ 0.10
Mn0.30 – 0.50
S≤ 0.05
P≤ 0.04
Typical ranges per SAE J403. Actual values per mill test certificate.
Properties
MicrostructureFerrite with little pearlite
Typical tensile (annealed)≈ 300 – 380 MPa
WeldabilityExcellent
How we anneal it
Sub-critical / process anneal
Relieves the hardness gained in drawing so the wire can take a second heavy draw or a deep upset.
Annealing explainedEnquiries
We come back with availability and a quotation — usually the same working day.