Cold Heading Wire

Features of spring steel

  • · Improvement of Cold Heading with surface special coating in arow.

    · Internal quality with even heat treatment.

    · Improvement of production with extending supply volume by carrier packing

Type of Cold Heading Wire

Classify Type
and
Mark		 Diameter
(mm)		 WSA WSB
Tensile Strength Elongation Reduce RateMin Tensile Strength Elongation Reduce RateMin
N/㎟ Min(%) Min(%) N/㎟ Min(%) Min(%)
Austenite AISI 304 1.60Min. 590 - 740 30 70 650 - 780 20 65
1.61Max. 540 - 700 40 560 - 720 25
AISI XM-7 1.60Min. 510 - 640 30 540 - 690 20
1.61Max. 490 - 590 40 550 - 640 25
AISI 304HC 1.60Min. 520 - 660 30 580 - 710 20
1.61Max. 490 - 650 40 520 - 690 25
AISI 316 1.60Min. 560 - 710 30 600 - 760 20
1.61Max. 520 - 660 40 550 - 690 25
Martensite AISI 410 1.60Min. - - - 550 - 740 10
1.61Max. 470 - 640
Ferrite AISI 430 1.60Min. - - - 550 - 740
AISI 434 1.61Max. 470 - 640

Tolerance & Ovality, Allowed Limit of Hole Depth

Diameter Tolerance Ovality Allowed Limit of Hole Depth
0.8 - 1.5 +0 ~ 0.02 0.010 Under 0.02 Under
1.6 - 3.5 +0 ~ 0.03 0.015 Under 0.03 Under
3.6 - 5.5 +0 ~ 0.04 0.020 Under 0.04 Under
5.6 - 9.0 +0 ~ 0.05 0.025 Under 0.05 Under
9.1 - 18.0 +0 ~ 0.06 0.30 Under 0.06 Under

Packing Standard

Diameter(mm) WSA WSB
Coil Inner Dia Unit Weight Coil Inner Dia Unit Weight
0.8 - 1.20 12", 16" 30, 50 12"(16") 30
1.21 - 2.00 16", 20" 50, 80 16"(18") 50
2.01 - 5.00 20", 24" 80, 100 20"(24") 100, 200
5.01 - 12.00 24", 30" 100, 200 30"(42") 400
12.01 - 18.00 28", 32" - 30"(42") 400 - 1000