156 / 192
Heater
Ribbon
-
Type A and Type
C
The
Arklay S.
Richards
Co.,
lnc. offers two types
of
resistance heating
ribbon. The RICHARDS
NRA or Type A resistance heat-
ing ribbon is composed of 80% Nickel and 20%
Chromium. lt
has
a
lowerlemperature coefficient of
resistance
when
compared to
Type C resistance
ribbon. The Type
A resistance ribbon
has
a
usable
temperature range
up
to
1150'C
or 2100'F.
The
RICHARDS
NRC
or
Type C resistance heating ribbon
is
composed of 60% Nickel, 16% Chromium, and the balance
lron.
The Type C has a usable
temperature
range
up
to 1000'C
or
1
850'F.
lt has a
higher
coetlicient
of
resistance when compared to the Type A
ribbon.
Both types
of ribbon have excellent corrosion resistance.
The
Type C
is
very useful
in
applications where a high resistance is
required
within
a
limited
space. ln
heating and technical applications, the Type A is most
commonly
used. The Type
A
and Type C resistance ribbon are
both
offered in
large
or small
spool
sizes.
Phone
one of
our
sales
engineers
for
details.
Heater Ribbon
-
Iype
A
lSOo/o
lllickel,
2Oolo
Chroniunf
Gode
1
Code
2
01
02
03
06
08
12
16
24
32
40
48
64
01
0.102
2.59
.02128
.01333
.0r
000 .008000 .006667 .005000
02
0.091
2.31
.02385 .01495
.0112,1
.008967
.A;fr7473
.005604
03
0.081
2.06
.02679 .01679 "01259
.01,007
.008395 .006296
04
0.072
1.83
.03014 .01889 .o1417
,.01,133
.aiog444 .007083
05
0.064
1
.63
.04521
.03391
.42125
.o1594 "01275
.0,1063
.007969
06
0.057
1
.45
.05077 .03807 .02386
,0:1790
.41432
,r01:l93
.008947
07
0.051
1.295
.05674 .04255
.,A,:2667
:
"02,000
.01600 -01333 .01000
08
0.045
1
.143
.06430
.04823
,.03a22 .,42267
.01813
,0:1,517
.01133
09
0.040
1
.016
.1
085
.07234 .05426
.03400 .02550, ,o2040 r01700
,a1215
10
0.036
0.914
.1206
.08038 .06028
.49.778
.02839
'.02:2,67,:.
.0i1889,'
;gl417
11
0.032
0.813
.1
356 .09043
.06782
::04250
.03188 .02550
',fr2.'tr',25
,o1,594
12
0.0285 0.724
.1523
.1015 .07615
;a4772
r.03579
.02963, .02386
;01,790'
13
0.0253
0.6426
.1716
11
44 .08578 .05376 .04032 .03225 .02688 '02016
14 0.0226 0.5740
.1921
J2A4
,oga27 ,06018 .04513
.0361,1
.03009
.42?.5:7
15
0.0201
0.5105
.4319 .2879 .2159
.1,353
11015 .06766 .05075 .04060 .03383
,,42537
16
0.0179 o.4547
.4850 .3233 .2425 .1520
1140
.07598 .05698 .04559 .03799
,az€,49,
17
0.0159 0.4039
1.092
.5460 .3640
.2730
.1711
.1283 .08554 .06415
.05292
.44277 .03208,
18 0.0142
0.3607
1,223
.6113
.4076
.3057 .1915 .1437
.09,578
.07183
',:a5747
:04789 .03592
19
0.0126 0.3200
1
.378
.6890 .4593
.3445
,2,159
.1
6:1,
I
.1079 .08095
.a6476
.05397 .04048
20
0.0113
0.2870
1
.536
.7682
.5121
.3841
,2447 .1805
..1204
.o9027 .a7221 .06018 '"04513
21
0.0100
0.2540
3.472
1.736
.8681
.5787 .4340
:27,24
.2A4A
.1360 .1020 .08180 ,06800 .05100
22
0.0089 0.2261 3.902
1.951
.9754
.6503 .4877 .3056
:"2292
.1528
1146
,09169 .07640
.0573,0
23
0.0080
0,2032 4.340 2.170
1.085 .7234
.61
45 .3400 .2550 ,1700
.,1275
.1020 .08500 .06375
24
0.0071
0.1803
4.891
2.445 1.223
.8151
.6923
.393,1
,2873
,1915 ,1437 1149 .09578 .07183
25
0.0063 0.1600
5,512 2.756
1.378 .9186 .7803
.:4317
.3238
.215,9 .1,619 .,1295
.'ts/-$
.08095
26
0.0056 0.1422 6.201 3.100 1.550 1.170
.8778
.4857 '3643
"2:429 .1821
.1457
.12,14
,09107
27
0.0050
0.1270
6.945 3.472 1.736
1
.311
.9831
,54:4O
.4080
,2720
.2040 .1632 .1360
.1,020
28
0.0045 0.1143
7.716
3.858 1.929 1.456
1.092 .6444
.4533 ,.3,022 .2267
.181,3
.1511 1133
29
0.0040 0.1016
8.681
4.340 2.458
1
.639
1.229 .6800
,,.5'1,00
,3400 .2550
,2044
,'1,700,
19,75,,
30
0.0035 0.0889 9.921 4.960 2.809 1.873 1.404
,.7771
.5829 .3886
.291,41
.2331 ,1943
.7457
31
0.0031
o.o7B7
11
.20 5.601
3.171
2.114
1
.586
.8774
'6581
/.387
.3290
,2.632
,21,94.
,1645
32 0.00275
0.0699
12.63
6.313 3.575 2.383
1
.788 .9891
.7
418
.,4945
.3709 .2967
2473
.1855
33
0.00250 0.0635 13.89 6.945 3.933
2.622
1
.966 1.088
.8'160
'
.544fi
.4080
.3264:
."2724 2,A40
34
0.00225
0.0559 15.43
7.716
4.369
2.913 2.185
1.209
,.9.067 ,6:0,44
.4533 ,3627
,3,,0,|22
,.2267
35
0.00200 0.0508 17.36
9.831
4.916 3.277
2.458
1.360 1.020 :.6800
.5'100
.4080 .3400 -2550
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