Stainless Steel Strip | Carbon Steel Strip | Stainless Spring Wire | Gibbs Gibbs Interwire Specializes in Wire & Strip Products with a focus on Narrow Width, Precision Slit Coil, Spring Wire, & all Tempers of Round, Flat, & Shaped Stainless Steel & Carbon Steel Wire Products The most frequently used grade of the Carbon Steels, 1008 low carbon strip has a carbon content of .08-.10%. The material is not corrosion resistant but is ideal for low strength parts that require forming, welding or machinability. Gibbs supplies material in the 4 numbers hard condition (45000-55,000 PSI) in metric sizes from .35mm -1.25mm.