I-Rod™
High Impact Thermoplastic for Anti-Corrosion Pipe Supports

I-Rod (Standard) Specifications

Property Value Units ASTM Test Value
Density, 73º F - D792 1.41
Tensile Strength, 73º F psi D638 9,800
Tensile Modulus of Elasticity, 73º F psi D638 440,000
Elongation (at break), 73º F % D638 30-60
Flexural Modulus of Elasticity, 73º F psi D790 455,000
Flexural Strength, 73º F psi D790 13,800
Compressive Strength, 10% def, 73º F psi D695 16,000
Coefficient of Friction (dry vs steel) Dynamic - PTM 55007 0.25
IZOD Impact (notched), 73º F ft-lbs/in of notch D256 1.5
Deformation Under Load % D621 1.0
Melting Point ºF D3418 329
Coefficient of Linear Expansion in/in/ºF D696 5.8 x 10-5
Continuous Service Temperature ºF - 194
Heat Deflection Temperature, 264 psi ºF D648 220
Flammability Rating - VL94 HB
Volume Resistivity Ohm-cm D257 1.0 x 1015
Dielectric Strength, Short Term V/mm D149 420

I-Rod (High-Temperature) Specifications
Property Value Units ASTM Test Value
Density, 73º F - D792 1.28
Tensile Strength, 73º F psi D638 16,500
Tensile Modulus of Elasticity, 73º F psi D638 475,000
Elongation (at break), 73º F % D638 80
Flexural Modulus of Elasticity, 73º F psi D790 500,000
Flexural Strength, 73º F psi D790 20,000
Compressive Strength, 10% def, 73º F psi D695 22,000
Coefficient of Friction (dry vs steel) Dynamic - PTM 55007 0.42
IZOD Impact (notched), 73º F ft-lbs/in of notch D256 0.5
Hardness, 73º F - D785 R125 / M112
Melting Point ºF D3418 N/A
Coefficient of Linear Expansion in/in/ºF E831 3.1 x 10-5
Continuous Service Temperature ºF - 340
Heat Deflection Temperature, 264 psi ºF D648 392
Flammability Rating - UL94 V-O
Volume Resistivity Ohm-cm D257 6.7 x 1017
Dielectric Strength, Short Term V/mm D149 830
Thermal Conductivity BTU-in/ ft2 hr ºF C177 0.90

I-Rod (Cut and Drilled) Dimensions
Pipe
Dia.
(in)
# of
Cuts
Dist End to
Hole Center 1
(in)
Dist End to
Hole Center 2
(in)
Rod Length
(in)
Hole Diameter
(in)
Hole c to c
(in)
1/2 49 0.5625 1.75 2.3125 0.375 1.1875
3/4 45 0.5625 1.9375 2.5 0.375 1.375
1 41 0.5625 2.1875 2.75 0.375 1.625
1 35 0.75 2.5 3.25 0.5 1.75
1.5 30 0.75 3.125 3.875 0.5 2.375
2 27 0.75 3.5625 4.3125 0.5 2.8125
3 20 0.876 4.9385 5.8145 0.625 4.0625
4 17 0.9375 6 6.9375 0.625 5.0625
5 15 0.90625 6.96875 7.875 0.625 6.0625
6 12 1.125 8.5 9.625 0.75 7.375
8 10 1.125 10.5 11.625 0.75 9.375
10 8 1.3125 12.9375 14.25 0.875 11.625
12 7 1.5 15.25 16.75 1 13.75
14 6 1.5 16.5 18 1 15
16 6 1.5 18.5 20 1 17
18 5 1.6875 20.8125 22.5 1.125 19.125

When using I-Rod as a beam dressing

Piping Engineers: Use the following maximum loading for each I-Rod. Up to three rods can be used to achieve desired weight loading:

1 in I-Rod 8,000 lb (3636 Kg)    1 ½ in I-Rod 10,000 lb (4545 Kg)

The table below conservatively estimates total weight/foot of pipe filled with water. Multiply this number by support spacing to get total weight loading then select number of 1 in. I-Rods if pipe is less than 12 in. 1 ½ in. I-Rods are generally recommended for piping over 12 in. Do not mix rod sizes!

Weight (lb) / Foot of Piping Full of Water (conservative)

Nominal
Pipe
Size (in)
Outside
Diameter (in)
Std Sch 40 X-Strong Sch 80 Sch 120 Sch 140 Sch 160 XX
Strong
2 2.375 6 6 7 7     9 11
3 3.500 12 12 14 14     18 23
4 4.500 18 18 22 22 26   29 34
6 6.625 33 34 44 44 51   60 68
8 8.625 51 54 69 69 86 93 100 98
10 10.750 76 80 94 104 129 143 155 143
12 12.750 104 110 121 144 181 195 215 181
14 14.000 122 131 140 173 217 237 255  
16 16.000 151 171 171 224 280 310 332  
18 18.000 183 216 205 282 354 384 418  
20 20.000 217 261 242 346 432 447 514  
24 24.000 294 370 325 494 625 678 737  
26 26.000 337   370          
28 28.000 383   419          
30 30.000 431   470          
36 36.000 593 731 639          
42 42.000 780   834