Material: 201, 202, 301, 302, 304, 304L, 316, 316L etc. Wire diameter: 0.3-5.0mm Characteristics: excellent straightness & helix with good cast; Uniform & beautiful surface condition; High elasticity and high fatigue resistance; Strong corrosion resistance against exposure to the toughest atmosphere. Stainless steel Spring Wire specification: Type AISI C Max % Mn Max % P Max% S Max% Si Max% Cr% Ni% Mo% 201 0.15 5.50-7.50 0.06 0.03 1 16.000-18.00 0.5 - 202 0.15 7.50-10.00 0.06 0.03 1 17.00-19.00 3.-0-5.00 - 302 0.15 2 0.045 0.03 1 17.00-19.00 8.00-10.00 - 302HQ/ 0.03 2 0.045 0.02 1 17.00-19.00 9.00-10.00 - 304CU 304HC 0.04 0.80-1.70 0.04 0.015 0.3-0.6 18-19 8.5-9.5 - 303 0.07 2 0.045 0.25 Min 1 17-19 8.0-10.0 0.6 304 0.08 2 0.045 0.03 1 18.00-20.00 8.0-10.50 - 304L 0.03 2 0.045 0.03 1 18.00-20.00 8.00-12.00 - 316 0.06 2 0.045 0.03 1 16.00-18.00 10.00-14.00 2.00-3.00 316L 0.03 2 0.045 0.03 1 16.00-18.00 10.00-14.00 2.00-3.00 347 0.08 2 0.045 0.03 1 17.00-19.00 9.00-13.00 - 321 0.06 2 0.045 0.01 .40-.60 17-19.00 9.4-9.6 - ER308 0.08 2 0.045 0.03 1 17-19 9.5-13.0 - ER308L 0.025 1.50/2.00 0.025 0.02 0.5 19.0/21.0 9.5/11.0 - ER309 0.08 1.50/2.50 0.02 0.015 0.5 23.0/25.0 20.0/14.0 - ER309L 0.025 1.50/2.50 0.02 0.015 0.5 23.0/25.0 12.0/14.0 - ER316L 0.02 1.50/2.00 0.02 0.02 0.5 18.0/20.0 12.00-14.00 2.00-3.00 430L 0.03 1 0.04 0.03 1 16.00-18.00 - Stainless steel Spring Wire application: Produced in accordance with the specifications of JIS,with stable linearity And excellent cast and helix,it can be widely used for rolling various precision springs.