Spring Wires

Spring Wires

Thai Seisen's spring wires are well-regarded by our customers due to our strict quality control and their consistent workability. We also develop unique steel grades for products with high-strength requirements in order to increase the value of our customer’s products.

Steel Grade 302 (1.4310), 304, 316, 316H1
Wire Diameter 0.50 mm – 2.00 mm (Full Hard), 0.50 mm – 2.50 mm (3/4H, 1/2H)
Finish Classification Full Hard (H), 3/4Hard (3/4H), 1/2Hard (1/2H)
Surface Classification Extra Bright (EB), Inorganic Coat (RD)
Standard JIS G4314
Packing Style Coil, Spool
Diameter (mm) Diameter Tolerance (mm) Ovality (mm) Tensile Strength (N/mm2)
Full Hard (H)
304, 302, 316H1
3/4Hard (3/4 H)
304, 302, 316H1
1/2Hard (1/2 H)
304, 304, 302, <(316(H)>
0.500 - 0.600 +0, -0.010 0.005 Max. 1950 - 2200 1670 - 1910 1600 - 1850
0.601 - 0.900 1850 - 2100 1570 - 1810 1530 - 1780
0.901 - 1.000 +0, -0.015 0.007 Max.
1.001 - 1.400 1750 - 2000 1470 - 1720 1450 - 1700
1.401 - 1.600 1650 - 1900 1420 - 1670 1400 - 1650
1.601 - 2.000 +0, -0.020 0.010 Max.
2.001 - 2.500 - 1370 - 1620 1320 - 1570
Major features of stainless steel spring are as follows:
◎ Excellent corrosion resistance. Rust-preventive treatments such as plating are not necessary.
◎ Higher level of heat resistance than hard steel wires and can be used as springs in high-temperature environments.