One of the major lines of production which was commissioned in the year 1992 is Steel Wires, uncoated and galvanized, for Ropes. The manufacturing capacity of these wires is 2400 METRIC TONES PER YEAR.
The basic properties of spring steel wire are given here under :
Chemical Composition :
Grade of wire
Carbon %
Manganese %
Silicon %
Phosphorus %
Sulphur %
I
0.35-0.45
0.50-0.80
0.10-0.35
0.05 max
0.05 max
II
0.46-0.55
0.50-0.80
0.10-0.35
0.05 max
0.05 max
III
0.56-0.65
0.60-0.90
0.10-0.35
0.05 max
0.05 max
IV
0.66-0.75
0.60-0.90
0.10-0.35
0.05 max
0.05 max
V
0.75-0.85
0.60-0.90
0.10-0.35
0.05 max
0.05 max
Tensile Strength :
Grade (I)
Grade (II)
Grade (III)
Grade (IV)
Grade (V)
U.T.S. (N/mm2)
125-145
145-160
160-180
180-200
200-240
Dimension Tolerances, Torsion, Bends :
Dia Range (mm)
Tolerances
Minimum Torsion Nos. 100 x dia of wire
Minimum Reverse Bends
0.60-1.00
+0.015
22
7 on R = 200
1.05-1.60
+0.020
20
7 on R = 320
1.65-2.00
+0.028
18
7 on R = 400
Coil Dimensions :
Dia (in mm)
Internal Dia (in mm)
External Dia (in mm)
Coil weight (in Kgs.)
0.60-0.80
250
350
5-15
0.85-1.00
250
350
10-30
1.05-1.30
250
350
20-50
1.35-2.00
500
700
100-200
Zinc Coating : As per customer's requirements.
Packing :Coils are packed in Polythene and Hessian, after coating with Rust-preventive chemicals.
The coils can be supplied in the packing required by the customer.
