|
|
| |
 |
Used in the manufacture of the main purposes : entanglement
in a state of cold forming by quenching the spring without
national standards GB4357-89
|
Nominal Diameter (mm)
|
Tensile Strength （N/mm2)
|
|
B |
C |
D |
|
0.14
|
2200-2600
|
2550-2940
|
2740-3140
|
|
0.16
|
2150-2550
|
2500-2890
|
2690-3090
|
|
0.18
|
2150-2550
|
2450-2840
|
2690-3090
|
|
0.20
|
2150-2550
|
2400-2790
|
2690-3090
|
|
0.25
|
2060-2450
|
2300-2700
|
2640-3040
|
|
0.28
|
2010-2400
|
2300-2700
|
2640-3040
|
|
0.30
|
2010-2400
|
2300-2700
|
2640-3040
|
|
0.32
|
1960-2350
|
2250-2650
|
2600-2990
|
|
0.35
|
1960-2350
|
2250-2650
|
2600-2990
|
|
0.40
|
1910-2300
|
2250-2650
|
2600-2990
|
|
0.45
|
1860-2260
|
2200-2600
|
2550-2940
|
|
0.50
|
1860-2260
|
2200-2600
|
2550-2940
|
|
0.55
|
1810-2210
|
2150-2550
|
2500-2890
|
|
0.60
|
1760-2160
|
2110-2500
|
2450-2840
|
|
0.65
|
1760-2160
|
2110-2500
|
2450-2840
|
|
0.70
|
1710-2110
|
2060-2450
|
2450-2840
|
|
0.80
|
1710-2060
|
2010-2400
|
2400-2840
|
|
0.90
|
1710-2060
|
2010-2350
|
2350-2750
|
|
1.00
|
1660-2010
|
1960-2300
|
2300-2690
|
|
1.20
|
1620-1910
|
1910-2250
|
2250-2550
|
|
1.40
|
1620-1910
|
1860-2210
|
2150-2450
|
|
1.60
|
1570-1860
|
1810-2160
|
2110-2400
|
|
1.80
|
1520-1810
|
1760-2110
|
2010-2300
|
|
2.00
|
1470-1760
|
1710-2010
|
1910-2200
|
|
2.20
|
1420-1710
|
1660-1960
|
1810-2110
|
|
2.50
|
1420-1710
|
1660-1960
|
1760-2060
|
|
2.80
|
1370-1670
|
1620-1910
|
1710-2010
|
|
3.00
|
1370-1670
|
1570-1860
|
1710-1960
|
|
3.20
|
1320-1620
|
1570-1810
|
1660-1910
|
|
3.50
|
1320-1620
|
1570-1810
|
1660-1910
|
|
4.00
|
1320-1570
|
1520-1760
|
1620-1860
|
|
4.50
|
1320-1570
|
1520-1760
|
1620-1860
|
|
5.00
|
1320-1570
|
1470-1710
|
1570-1810
|
|
5.50
|
1270-1520
|
1470-1710
|
1570-1810
|
|
6.00
|
1220-1470
|
1420-1660
|
1520-1760
|
|
6.30
|
1220-1470
|
1420-1610
|
-
|
|
7.00
|
1170-1420
|
1370-1570
|
-
|
|
8.00
|
1170-1420
|
1370-1570
|
-
|
|
9.00
|
1130-1320
|
1320-1520
|
-
|
|
10.00
|
1130-1320
|
1320-1520
|
-
|
|
11.00
|
1080-1270
|
1270-1470
|
-
|
|
12.00
|
1080-1270
|
1270-1470
|
-
|
|
13.00
|
1030-1220
|
1220-1420
|
-
|
|
|
|
|
|
