Stainless Steel Spring Wire

Surface Finish & Applications Type Symbol Grade Dia(mm) Applications S-CO WPA AISI 302,304,316 0.18-6.00 General Spring WPB AISI 302,304 WPC AISI 631J1 Ni-Co (Nickel coating) WPA AISI 302,304,316 0.06~2.00 Precision coiling at high speed WPB AISI 302,304 Bright WPA AISI 302,304,316 0.06-6.00 Precise spring wire for good bright surface & forming processing work WPB AISI 302,304 Mechanical Properties Dia(mm) Tolerance(mm) Tensile Strength N/mm2(kgf/mm2) AISI 302 - WPAAISI 304 - WPAAISI 316 - WPA AISI 302 - WPBAISI 304 - WPB 0.06 ±0.005 1620-1870 (165 - 190) 2160 - 2410 (220 - 245) 0.08 0.10 0.12 0.15 0.16 0.18 0.20 ±0.008 0.23 1570 - 1820 (160 - 185) 2060 - 2310 (210 - 235) 0.26 0.29 0.32 0.35 0.40 0.45 1960 - 2210 (200 - 225) 0.50 ±0.010 0.55 0.60 0.65 0.70 0.80 1470 - 1720 (150 - 175) 1860 - 2110 (190 - 215) 0.90 1.00 1.20 ±0.015 1370 - 1620 (140 - 165) 1770 - 2010 (180 - 205) 1.40 1.60 1320 - 1570 (135 - 160) 1670 - 1920 (170 - 195) 1.80 2.00 ±0.020 2.30 1280 - 1520 (130 - 155) 1570 - 1820 (160 - 185) 2.60 2.90 3.20 1180 - 1430 (120 - 145) 1470 - 1720 (150 - 175) 3.50 ±0.030 4.00 5.00 6.00 Packing(Spool) Dia(mm) Packing (F X B X W : A) App. W/T(kg) 0.06 ~ 0.15 Spool 0.5 - 3 0.16 ~ 0.40 DIN 2000 12 DIN 250 20 0.41 ~ 0.50 DIN 355 40 0.51 ~ 0.80 400 X 300 X 200 (60) 50 450 X 300 X 240 (60) 100 0.81 ~ 1.20 500 X 400 X 300 (60) 100 600 X 400 X 390 (60) 300 1.21 ~ 1.60 500 X 400 X 300 (60) 100 600 X 400 X 390 (60) 300 1.61 ~ 2.00 500 X 400 X 300 (60) 100 600 X 400f X 390 (60) 300 2.01 ~ 6.00 750 X 550 X 500 (130) 500 Packing(Coil) Dia(mm) Coil I.D (Inch) App. W/T(kg) 0.06 ~ 0.15 4 ~ 6 0.5 ~ 3 0.16 ~ 0.30 8 10 0.31 ~ 0.40 8 10 0.41 ~ 0.50 8 ~ 10 10 0.51 ~ 0.80 12 20 ~ 25 0.81 ~ 0.90 16 25 ~ 35 0.91 ~ 1.00 16 25 ~ 50 1.01 ~ 1.80 16 25 ~ 50 1.81 ~ 2.50 24 100 2.51 ~ 6.00 24 100 ~ 200 Cast & Helix(Pitch) The most important thing to make high quality spring is how to control cast & helix. As our specifications are based on lots of customer's demands, we have ever made control of it as follows: Dia(mm) Coil I.D(Inch) Cast(mm) Helix(mm) 0.06 ~ 0.15 4 ~ 6 160 ~ 250 30 under 0.16 ~ 0.40 8 200 ~ 30 0.41 ~ 0.50 8 200 ~ 300 10 250 ~ 370 0.51 ~ 0.80 12 300 ~ 450 0.81 ~ 0.90 16 400 ~ 600 0.91 ~ 1.00 50 under 1.01 ~ 1.80 1.81 ~ 2.50 24 600 ~ 900 60 under 2.51 ~ 6.00