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Surface Condition and Application
Description Type Grade Diameter(§®) Application
SeAHSCo WPA, WPB AISI 302 0.2 - 3.5 S-Coating
SeAHNiPl AISI 304 Ni Plating
Bright WPA AISI 316

Available Specification and Grade
Grade Equivalent Spec Chemical Composition(%)
AISI BS DIN JIS C Mn Cr Ni Mo
AISI 302 302 302S26 1.4310 SUS302 0.09 1.25 17.5 8.0 -
AISI 304 304 304S15 1.4301 SUS304 0.08 1.25 18.1 8.6 0.1
AISI 316 316 316S42 1.4401 SUS316 0.06 1.20 7.5 7.5 2.3
¡¡¡¡- SeAH spring wire is high quality wire of austenite series which are capable of
¡¡¡¡¡¡being hardened under severe cold drawing.

Wires Cast and Helix
Diameter(§®) Cast Helix
0.20 - 0.80 Drum size ¡¿ 1.5 Max. 20mm
0.81 - 3.5 Drum size ¡¿ 1.5 Max. 20mm

Dia. Tolerance and Ovality
Diameter(§®) Tolerance(§®) Max.Ovality(§®)
0.20 - 0.39 +0/- 0.008 0.004
0.40 - 0.80 +0/- 0.010 0.005
0.81 - 1.60 +0/- 0.015 0.015
1.60 - 3.20 +0/- 0.020 0.01
3.20 over +0/- 0.020 0.01

Tensile Strength for Spring Stainless Steel Wire(KS D 3535)
Diameter(§®) Classfication
WPA WPB
AISI 302. 304. 316 AISI 302.304
N/§± §¸/§± N/§± §¸/§±
0.2 1650-1900 170-195 1950-2200 200-225
0.23-0.40 1600-1850 165-190 2050-2300 210-235
0.45-0.60 1600-1850 165-190 1850-2100 190-215
0.65-1.00 1530-1780 155-180 1850-2100 190-215
1.20-1.40 1450-1700 150-175 1750-2000 180-205
1.60-2.00 1400-1650 145-170 1650-1900 170-195
2.30-2.60 1320-1570 135-160 1550-1800 160-185
2.90-3.50 1230-1480 125-150 1450-1700 150-175
Heat-Treatment at Low Temperature
¡¡- Excellent spring quality wire can be obtained through heat-treatment at low
¡¡¡¡temperature(400¡ÉX30minutes) after cold forming.
¡¡- Thin oxidized film created during heat-treatment process can be used as it is
¡¡¡¡or can be easily removed by acid mixture.

Packing Standard
Diameter(§®) Coating Spring Wire Bright Spring Wire Remark
Coil ID (inch) Coil WT(§¸) Coil ID (inch) Coil WT(§¸)
0.20 8 5 8 5 AISI 302
AISI 304
AISI 316
0.40 12 20 12 20
0.60 12 30 12 20
0.80 16 50 12 30
1.0 16 50 12 30
1.2-1.4 16 50 16 50
1.6-1.8 16 50 16 50
2.0-3.5 22 100 24 100
¡¡¡¡- Please consult with us for the sizes and specifications not listed here.