| Grade and Description |
Chemistry |
Tensile |
Yield |
Rockwell Hardness |
| Units |
typical |
ksi |
ksi |
typical |
1010
ERW tube |
| C |
|
.08-.13
|
| Mn |
|
.30-.60
|
| P |
|
.035 max
|
| S |
|
.035 max |
|
45 |
32 |
RB55 min |
1020
DOM tube |
| C |
|
.15-.25
|
| Mn |
|
.30-.60
|
| P |
|
.040 max
|
| S |
|
.050 max |
|
80 |
70 |
RB80 |
4130
DOM tube
(chromoly) |
| C |
|
.28-.33
|
| Mn |
|
.40-.60
|
| P |
|
.035
|
| S |
|
.040
|
| Si |
|
.15-.35
|
| Cr |
|
.80-1.10
|
| Mo |
|
.15-.25 |
|
100 |
90 |
RB90 |
As you can see, DOM tubing is nearly twice as strong in tension, and
more than twice as strong in resistance to bending in comparison to the
ERW tube. Also, the 4130 chromoly tube is only 20% stronger than standard
DOM in tension.
Weights of typical tubing sizes
| Outside Diameter |
Wall thickness |
Inside Diameter |
Type |
Weight, lbs/ft. |
Wgt/80ft. |
| 1.25" |
0.120 |
1.010" |
HREW/DOM |
1.448 |
116 |
| 1.375" |
0.120 |
1.135" |
HREW/DOM |
1.608 |
128.6 |
| 1.5" |
0.095" |
1.310 |
HREW/DOM |
1.426 |
114 |
| 1.5" |
0.120" |
1.260" |
HREW/DOM |
1.769 |
141.5 |
| 1.75" |
0.109" (FIA) |
1.532" |
DOM |
1.910 |
152.8 |
| 1.75" |
0.120" |
1.510" |
HREW/DOM |
2.089 |
167.1 |
|
Gauge
Number
|
Thickness (Inches)
|
Pounds Per Sq. Ft.
|
|
Nominal
|
Tolerance Range
|
|
10
|
.1345
|
.1405 to .1285
|
5.48695
|
|
11
|
.1196
|
.1256 to .1136
|
4.87911
|
|
12
|
.1046
|
.1106 to .0986
|
4.26718
|
|
13
|
.0897
|
.0947 to .0847
|
3.65933
|
|
14
|
.0747
|
.0797 to .0697
|
3.04740
|
|
15
|
.0673
|
.0723 to .0623
|
2.74552
|
|
16
|
.0598
|
.0648 to .0548
|
2.43955
|
|
17
|
.0538
|
.0578 to .0498
|
2.19478
|
|
18
|
.0478
|
.0518 to .0438
|
1.95001
|
|
19
|
.0418
|
.0458 to .0378
|
1.70524
|
|
20
|
.0359
|
.0389 to .0329
|
1.46455
|
|
21
|
.0329
|
.0359 to .0299
|
1.34216
|
|
22
|
.0299
|
.0329 to .0269
|
1.21978
|
|
23
|
.0269
|
.0299 to .0239
|
1.09739
|
|
24
|
.0239
|
.0269 to .0209
|
.97501
|
|
25
|
.0209
|
.0239 to .0179
|
.85262
|
|
26
|
.0179
|
.0199 to .0159
|
.73023
|
|
27
|
.0164
|
.0184 to .0144
|
.66094
|
Davesport, L.L.C.
43019 SE. 174th St.
North Bend, WA 98045
ph. 425-888-4444
email sales@davesport.com
Copyright © 2002 - 2004 Davesport, L.L.C.
|
