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Piano Wire Gauge Conversions
Piano Wire & Spring Wire
Carbon steel music wire is manufactured to the following specifications :-
BS 5216 M4 grade, DIN 17223 part 1, NF A47-301 and ASTM A227
Composition - carbon 0.7 to 1.0%, manganese 0.25 to 0.75%, silicon 0.35%, phosphous and sulphur 0.03% minimum.
Piano Wire, 1.0 metre straightened lengths or coiled
Diameter
|
SWG
|
Inches (mm)
|
gauge
|
0.192 (4.87)
|
6
|
0.176 (4.47)
|
7
|
0.160 (4.0)
|
8
|
0.144 (3.65)
|
9
|
0.128 (3.25)
|
10
|
0.116 (2.95)
|
11
|
0.104 (2.6)
|
12
|
0.092 (2.34)
|
13
|
0.080 (2.0)
|
14
|
0.072 (1.83)
|
15
|
0.064 (1.6)
|
16
|
0.056 (1.42)
|
17
|
0.048 (1.2)
|
18
|
0.040 (1.0)
|
19
|
0.036 (0.9)
|
20
|
0.028 (0.7)*
|
22
|
0.022 (0.5)*
|
24
|
*Please note piano wire marked with * is available in 36 inch lengths.
Spring Wire, 12 inches (305mm) lengths
Diameter
|
SWG
|
Inches (mm)
|
gauge
|
0.064 (1.6)
|
16
|
0.056 (1.4)
|
17
|
0.048 (1.2)
|
18
|
0.032 (0.8)
|
21
|
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Standard Wire Conversion Tables.
SWG
|
inches
|
mm
|
SWG
|
inches
|
mm
|
SWG
|
inches
|
mm
|
|
|
|
|
|
|
|
|
|
1
|
0.300
|
7.620
|
17
|
0.056
|
1.422
|
33
|
0.0100
|
0.254
|
2
|
0.276
|
7.010
|
18
|
0.048
|
1.219
|
34
|
0.0092
|
0.233
|
3
|
0.252
|
6.401
|
19
|
0.040
|
1.016
|
35
|
0.0084
|
0.213
|
4
|
0.232
|
5.893
|
20
|
0.036
|
0.914
|
36
|
0.0076
|
0.193
|
5
|
0.212
|
5.385
|
21
|
0.032
|
0.812
|
37
|
0.0068
|
0.1727
|
6
|
0.192
|
4.877
|
22
|
0.028
|
0.711
|
38
|
0.0060
|
0.1524
|
7
|
0.176
|
4.470
|
23
|
0.024
|
0.609
|
39
|
0.0052
|
0.1321
|
8
|
0.160
|
4.064
|
24
|
0.022
|
0.533
|
40
|
0.0048
|
0.1219
|
9
|
0.144
|
3.658
|
25
|
0.020
|
0.503
|
41
|
0.0044
|
0.1118
|
10
|
0.128
|
3.251
|
26
|
0.018
|
0.457
|
42
|
0.0040
|
0.1106
|
11
|
0.116
|
2.946
|
27
|
0.0164
|
0.416
|
43
|
0.0036
|
0.0914
|
12
|
0.104
|
2.641
|
28
|
0.0148
|
0.375
|
44
|
0.0032
|
0.0813
|
13
|
0.092
|
2.336
|
29
|
0.0136
|
0.345
|
45
|
0.0028
|
0.0711
|
14
|
0.080
|
2.032
|
30
|
0.0124
|
0.314
|
46
|
0.0024
|
0.0610
|
15
|
0.072
|
1.828
|
31
|
0.0116
|
0.294
|
47
|
0.0020
|
0.0508
|
16
|
0.064
|
1.625
|
32
|
0.0108
|
0.274
|
48
|
0.0016
|
0.0406
|