Spring Wire, Spring Steel Wire, High Carbon Steel Spring Wire
Home
Contact Us
You are here: HOME » Products List » Technical References » Wire Diameter Tolerance

Spring Wire Sizes and Tolerances

SINORAY supplies steel wires for springs in coiled wire and straightened cut wire forms in precise sizes with minimum tolerances based on international standards.

Dimensions and dimensional tolerances for Coiled Wires
The tolerances on the diameter are specified as below:

Mechanical properties a b and quality requirements for wire grades SL, SM, DM, SH and DH

1 2 3 4 5 6 7 8 9 10
Wire diameter da Mass

Tensile strength Rmc d e

For wire grades

 Minimum number of twists in the torsion test for wire grades
SL, SM, SH, DM and DH 		Wire diameter d (nominal size)
Nominal
size mm		 Permissible Deviations mm kg / 1000 m SL MPa SM MPa DM MPa SH MPa DHf MPa d mm
0,05 ± 0,003 0,0154         2800 to 3520 coiling test as specified in 7.4.3 0,05
0,06 0,0222         2800 to 3520 0,06
0,07 0,0302         2800 to 3520 0,07
0,08 0,0395         2800 to 3480 0,08
0,09 0,0499         2800 to 3430 0,09
0,10 ± 0,004 0,0617         2800 to 3380 0,10
0,11 0,0746         2800 to 3350 0,11
0,12 0,0888         2800 to 3320 0,12
0,14 0,121         2800 to 3250 0,14
0,16 0,158         2800 to 3200 0,16
0,18 ± 0,005 0,200         2800 to 3160 0,18
0,20 0,247         2800 to 3110 0,20
0,22 0,298         2770 to 3080 0,22
0,25 0,385         2720 to 3010 0,25
0,28 ± 0,008 0,488         2680 to 2970 0,28
0,30 0,555 2370 to 2650 2370 to 2650 2660 to 2940   2660 to 2940 0,30
0,32 0,631 2350 to 2630 2350 to 2630 2640 to 2920   2640 to 2920 0,32
0,34 0,713 2330 to 2600 2330 to 2600 2610 to 2890   2610 to 2890 0,34
0,36 0,799 2310 to 2580 2310 to 2580 2590 to 2870   2590 to 2870 0,36
0,38 0,890 2290 to 2560 2290 to 2560 2570 to 2850   2570 to 2850 0,38

 

1 2 3 4 5 6 7 8 9 10 11 12 13
Wire diameter da Mass

Tensile strength Rmc d e

For wire grades

 Minimum reduction in area after fracture Z for wire grades
SL, SM, SH, DM and DH		 Minimum number of twists in the torsion test for wire grades
SL, SM, SH, DM and DH 		Permissible depth of surface defects forwire grades DM, DH Permissible Decarburizetion depth for wire grades
DM, DH 		Wire diameter d (nominal size)
Nominal
size mm		 Permissible Deviations mm kg/1000 m SL MPa SM MPa DM MPa SH MPa DHf MPa % d mm mm mm

0,40

 ± 0,008

0,985

  

2270 to 2550

2270 to 2550

2560 to 2830

2560 to 2830

  

coiling test as

specified in

7.4.3

 -g -g

0,40

0,43

1,14

2250 to 2520

2250 to 2520

2530 to 2800

2530 to 2800

0,43

0,45

1,25

2240 to 2500

2240 to 2500

2510 to 2780

2510 to 2780

0,45

0,48

1,42

2220 to 2480

2220 to 2480

2490 to 2760

2490 to 2760

0,48

0,50

1,54

2200 to 2470

2200 to 2470

2480 to 2740

2480 to 2740

0,50

0,53

1,73

2180 to 2450

2180 to 2450

2460 to 2720

2460 to 2720

0,53

0,56

1,93

2170 to 2430

2170 to 2430

2440 to 2700

2440 to 2700

0,56

0,60

2,22

2140 to 2400

2140 to 2400

2410 to 2670

2410 to 2670

0,60

0,63

2,45

2130 to 2380

2130 to 2380

2390 to 2650

2390 to 2650

0,63

0,65

 ± 0,010

2,60

2120 to 2370

2120 to 2370

2380 to 2640

2380 to 2640

0,65

0,70

3,02

2090 to 2350

2090 to 2350

2360 to 2610

2360 to 2610

0,70

0,75

3,47

2070 to 2320

2070 to 2320

2330 to 2580

2330 to 2580

 25

0,75

0,80

 ± 0,015

3,95

2050 to 2300

2050 to 2300

2310 to 2560

2310 to 2560

 40 1 % max. of wire diameter 1.5 % max. of wire diameter

0,80

0,85

4,45

2030 to 2280

2030 to 2280

2290 to 2530

2290 to 2530

0,85

0,90

4,99

2010 to 2260

2010 to 2260

2270 to 2510

2270 to 2510

0,90

0,95

5,59

2000 to 2240

2000 to 2240

2250 to 2490

2250 to 2490

0,95

1,00

6,17

1720 to 1970

1980 to 2220

1980 to 2220

2230 to 2470

2230 to 2470

1,00

1,05

 ± 0,020

6,80

1710 to 1950

1960 to 2200

1960 to 2200

2210 to 2450

2210 to 2450

1,05

1,10

7,46

1690 to 1940

1950 to 2190

1950 to 2190

2200 to 2430

2200 to 2430

1,10

1,20

8,88

1670 to 1910

1920 to 2160

1920 to 2160

2170 to 2400

2170 to 2400

1,20

 

1 2 3 4 5 6 7 8 9 10 11 12 13
Wire diameter da Mass Tensile strength Rmc d e For wire grades Minimum reduction in area after fracture Z for wire grades
SL, SM, SH, DM and DH		 Minimum number of twists in the torsion test for wire grades
SL, SM, SH, DM and DH 		Permissible depth of surface defects forwire grades DM, DH Permissible Decarburizetion depth for wire grades
DM, DH 		Wire diameter d (nominal size)
Nominal
size mm		 Permissible Deviations mm kg/1000 m SL MPa SM MPa DM MPa SH MPa DHf MPa % d mm mm mm
1,25 ± 0,020 9,63 1660 to 1900 1910 to 2140 1910 to 2140 2150 to 2380 2150 to 2380 40 25 1 % max. of wire diameter 1.5 % max. of wire diameter 1,25
1,30 10,42 1640 to 1890 1900 to 2130 1900 to 2130 2140 to 2370 2140 to 2370 1,30
1,40 12,08 1620 to 1860 1870 to 2100 1870 to 2100 2110 to 2340 2110 to 2340 1,40
1,50 13,90 1600 to 1840 1850 to 2080 1850 to 2080 2090 to 2310 2090 to 2310 22 1,50
1,60 15,8 1590 to 1820 1830 to 2050 1830 to 2050 2060 to 2290 2060 to 2290 1,60
1,70 17,8 1570 to 1800 1810 to 2030 1810 to 2030 2040 to 2260 2040 to 2260 1,70
1,80 ± 0,025 20,0 1550 to 1780 1790 to 2010 1790 to 2010 2020 to 2240 2020 to 2240 1,80
1,90 22,3 1540 to 1760 1770 to 1990 1770 to 1990 2000 to 2220 2000 to 2220 1,90
2,00 24,7 1520 to 1750 1760 to 1970 1760 to 1970 1980 to 2200 1980 to 2200 2,00
2,10 27,2 1510 to 1730 1740 to 1960 1740 to 1960 1970 to 2180 1970 to 2180 2,10
2,25 31,2 1490 to 1710 1720 to 1930 1720 to 1930 1940 to 2150 1940 to 2150 2,25
2,40 35,5 1470 to 1690 1700 to 1910 1700 to 1910 1920 to 2130 1920 to 2130 2,40
2,50 38,5 1460 to 1680 1690 to 1890 1690 to 1890 1900 to 2110 1900 to 2110 2,50
2,60 41,7 1450 to 1660 1670 to 1880 1670 to 1880 1890 to 2100 1890 to 2100 2,60
2,80 ± 0,030 48,3 1420 to 1640 1650 to 1850 1650 to 1850 1860 to 2070 1860 to 2070 2,80
3,00 55,5 1410 to 1620 1630 to 1830 1630 to 1830 1840 to 2040 1840 to 2040 3,00
3,20 63,1 1390 to 1600 1610 to 1810 1610 to 1810 1820 to 2020 1820 to 2020 3,20
3,40 71,3 1370 to 1580 1590 to 1780 1590 to 1780 1790 to 1990 1790 to 1990 16 3,40
3,60 79,9 1350 to 1560 1570 to 1760 1570 to 1760 1770 to 1970 1770 to 1970 3,60
3,80 89,0 1340 to 1740 1550 to 1740 1550 to 1740 1750 to 1950 1750 to 1950 3,80

 

1 2 3 4 5 6 7 8 9 10 11 12 13
Wire diameter da Mass Tensile strength Rmc d e For wire grades Minimum reduction in area after fracture Z for wire grades
SL, SM, SH, DM and DH		 Minimum number of twists in the torsion test for wire grades
SL, SM, SH, DM and DH 		Permissible depth of surface defects forwire grades DM, DH Permissible Decarburizetion depth for wire grades
DM, DH 		Wire diameter d (nominal size)
Nominal
size mm		 Permissible Deviations mm kg/1000 m SL MPa SM MPa DM MPa SH MPa DHf MPa % d mm mm mm
4,00 ± 0,030 98,6 1320 to 1520 1530 to 1730 1530 to 1730 1740 to 1930 1740 to 1930 35 16 1 % max. of wire diameter 1.5 % max. of wire diameter 4,00
4,25 ± 0,035 111 1310 to 1500 1510 to 1700 1510 to 1700 1710 to 1900 1710 to 1900 4,25
4,50 125 1290 to 1490 1500 to 1680 1500 to 1680 1690 to 1880 1690 to 1880 12 4,50
4,75 139 1270 to 1470 1480 to 1670 1480 to 1670 1680 to 1860 1680 to 1860 4,75
5,00 154 1260 to 1450 1460 to 1650 1460 to 1650 1660 to 1840 1660 to 1840 5,00
5,30 173 1240 to 1430 1440 to 1630 1440 to 1630 1640 to 1820 1640 to 1820 11 5,30
5,60 ± 0,040 193 1230 to 1420 1430 to 1610 1430 to 1610 1620 to 1800 1620 to 1800 11 5,60
6,00 222 1210 to 1390 1400 to 1580 1400 to 1580 1590 to 1770 1590 to 1770 10 6,00
6,30 245 1190 to 1380 1390 to 1560 1390 to 1560 1570 to 1750 1570 to 1750 9 6,30
6,50 260 1180 to 1370 1380 to 1550 1380 to 1550 1560 to 1740 1560 to 1740 9 6,50
7,00 302 1160 to 1340 1350 to 1530 1350 to 1530 1540 to 1710 1540 to 1710 9 7,00
7,50 ± 0,045 347 1140 to 1320 1330 to 1500 1330 to 1500 1510 to 1680 1510 to 1680 30 7h 7,50
8,00 395 1120 to 1300 1310 to 1480 1310 to 1480 1490 to 1660 1490 to 1660 7h 8,00
8,50 445 1110 to 1280 1290 to 1460 1290 to 1460 1470 to 1630 1470 to 1630 6h 8,50
9,00 499 1090 to 1260 1270 to 1440 1270 to 1440 1450 to 1610 1450 to 1610 6h 9,00
9,50 ± 0,050 559 1070 to 1250 1260 to 1420 1260 to 1420 1430 to 1590 1430 to 1590 5h 9,50
10,00 617 1060 to 1230 1240 to 1400 1240 to 1400 1410 to 1570 1410 to 1570 5h 10,00
10,50 ± 0,070 680 - 1220 to 1380 1220 to 1380 1390 to 1550 1390 to 1550 - 10,50
11,00 746 1210 to 1370 1210 to 1370 1380 to 1530 1380 to 1530 11,00
12,00 ± 0,080 888 1180 to 1340 1180 to 1340 1350 to 1500 1350 to 1500 12,00

 

1 2 3 4 5 6 7 8 9 10 11 12 13
Wire diameter da Mass Tensile strength Rmc d e For wire grades Minimum reduction in area after fracture Z for wire grades
SL, SM, SH, DM and DH		 Minimum number of twists in the torsion test for wire grades
SL, SM, SH, DM and DH 		Permissible depth of surface defects forwire grades DM, DH Permissible Decarburizetion depth for wire grades
DM, DH 		Wire diameter d (nominal size)
Nominal
size mm		 Permissible Deviations mm kg / 1000 m SL MPa SM MPa DM MPa SH MPa DHf MPa % d mm mm mm

12,50

± 0,080

963

-

1170 to 1320

1170 to 1320

1330 to 1480

1330 to 1480

28

-

1 % max. of wire diameter

1.5 % max. of wire diameter

12,50

13,00

1042

1160 to 1310

1160 to 1310

1320 to 1470

1320 to 1470

13,00

14,00

1208

1130 to 1280

1130 to 1280

1290 to 1440

1290 to 1440

14,00

15,00

± 0,090

1387

1160 to 1260

1160 to 1260

1270 to 1410

1270 to 1410

15,00

16,00

1578

1090 to 1230

1090 to 1230

1240 to 1390

1240 to 1390

16,00

17,00

1782

1070 to 1210

1070 to 1210

1220 to 1360

1220 to 1360

17,00

18,00

1998

1050 to 1190

1050 to 1190

1200 to 1340

1200 to 1340

18,00

19,00

± 0,100

2225

1030 to 1170

1030 to 1170

1180 to 1320

1180 to 1320

19,00

20,00

2466

1020 to 1150

1020 to 1150

1160 to 1300

1160 to 1300

20,00

Tolerence is based on EN 10218-2:1996
T5 for diameters below 0,80 mm;
T4 for diameters from 0,80 mm up to 10,00 mm;
T3 for diameters over 10,00 mm.

Dimensions and dimensional tolerances for Wire in straightened and cut lengths

The requirements for length tolerances and straightness are as in EN 10218-2:1996. The tolerance on the nominal length shall only be in plus keeping the same tolerance range (Table 7).

Tolerances on the length of cut lengths

Nominal length L (mm) Tolerance
Class 1 Class 2 Class 3
L<= 300 + 1,0 mm
0 mm		 + 1 %
0 % 		+ 2 %
0 %
300 < L <= 1000 + 2,0 mm
0 mm
1000 < L + 0,2 %
0 %

The tolerance for the diameter of the wire after straightening needs to be wider to cope with the increase of the section as a result of some straightening process.

Diameter tolerance for straightened and cut lengths

Nominal diameter in mm Tolerance in mm
Lower tolerance Upper tolerance
0,05 d < 0,12
0,12 d < 0,22
0,22 d < 0,26
0,26 d < 0,37 		- 0,005
- 0,005
- 0,005
- 0,006

+ 0,007
+ 0,008
+ 0,009
+ 0,012

0,37 d < 0,47
0,47 d < 0,65
0,65 d < 0,80
0,80 d < 1,01 		- 0,008
- 0,008
- 0,010
- 0,015

+ 0,015
+ 0,018
+ 0,022
+ 0,030
1,01 d < 1,35
1,35 d < 1,78
1,78 d < 2,01 		- 0,020
- 0,020
- 0,025

+ 0,040
+ 0,045
+ 0,055

2,01 d < 2,35
2,35 d < 2,78
2,78 d < 3,01
3,01 d < 3,35
3,35 d < 4,01 		- 0,025
- 0,025
- 0,030
- 0,030
- 0,030

+ 0,060
+ 0,065
+ 0,075
+ 0,080
+ 0,090
4,01 d < 4,35
4,35 d < 5,01
5,01 d < 5,45
5,45 d < 6,01		 - 0,035
- 0,035
- 0,035
- 0,040

+ 0,100
+ 0,110
+ 0,120
+ 0,130
6,01 d < 7,12
7,12 d < 7,67
7,67 d < 9,01
9,01 d < 10,01		 - 0,040
- 0,045
- 0,045
- 0,050

+ 0,150
+ 0,160
+ 0,180
+ 0,200
10,01 d < 11,12
11,12 d < 12,01
12,01 d < 14,52		 - 0,070
- 0,080
- 0,080

+ 0,240
+ 0,260
+ 0,300
14,52 d < 17,34
17,34 d < 18,37
18,37 d < 20,01		 - 0,090
- 0,090
- 0,100

+ 0,350
+ 0,370
+ 0,400
SINORAY SPRING WIRE CO.      
Email: info@springwire.net     URL: https://www.springwire.net