Spring Wire

Features of spring steel

  • · High elasticity and high fatigue limits

    · Excellent anti-corrosion and no extra coating required

    · High tensile strength at high temperature and excellent heat resistance

    · Excellent coiling condition and suitable for various electric application of non- or low-magnetic substances

Types of spring wire

Classify Surface Mark Grade Diameter(mm)
S-Co Dull WPA, WPB AISI302, 304, 316 0.20 ~ 3.50
Bright Bright WPA, WPB AISI302, 304, 316 0.20 ~ 3.50

Tensile strength of spring stainless steel (KS D 3535)

Diameter
(mm)		 Classify
WPA WPB
AISI302, 304, 316 AISI302, 304
N/mm² N/mm²
0.20 1650 ~ 1900 2150 ~ 2400
0.23 ~ 0.40 1600 ~ 1850 2050 ~ 2300
0.45 ~ 0.60 1600 ~ 1850 1950 ~ 2200
0.65 ~ 1.00 1530 ~ 1780 1850 ~ 2100
1.20 ~ 1.40 1450 ~ 1700 1750 ~ 2000
1.60 ~ 2.00 1400 ~ 1650 1650 ~ 1900
2.30 ~ 2.60 1320 ~ 1570 1550 ~ 1800
2.90 ~ 4.00 1230 ~ 1480 1450 ~ 1700
4.10 ~ 4.50 1100 ~ 1350 1350 ~ 1600

Straightness of wire

Diameter(mm) Cast Helix Remarks
0.20~0.35 150~250 Max. 20
0.36~0.45 250~300 Max. 20
0.46~0.35 150~250 Max. 20
1.71~1.50 400~600 Max. 15
1.51~3.50 600~900 Max. 15

Packaging standard

Packaging Type Type
Spool Plastic DIN 200, DIN 250, DIN 355, SH 390, SH460
Steel 560, 760
Coil 8", 10", 12", 16", 24"