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Attention to Detail for Accurate Custom Cuts


With the tightest custom cut tolerances of any small quantity US metal supplier, your materials get a 3-point inspection to ensure quality and accuracy before it ships.


Product Details, Specifications, and Technical Information

Cast Iron Round Tube G2 Dura-bar offers high wear resistance, strength, durability, vibration dampening, fatigue resistance, with excellent consistency and finish. G2, a non-ductile iron, is comparably strong to 1040 steel in the "as-rolled" condition, and is manufactured through the Continuous Cast process. This removes porosity and makes it superior to other cast irons. It is typically used in the automotive and power industries for gears, rotors, pistons, valves, rollers, bushings, chucks, flywheels, pile drivers, rams pulleys, housings, and motorcycle disc brakes.
DURA-BAR is a trademark of Dura-bar

shape Image
Dimension Name Specification
Outer Diameter 12
Wall 1.31
Inner Diameter 9.375
Max Length 72
Alloy G2
Production Method As Cast
MTR Availability Yes
Material Dura-Bar Cast Iron
Shape Hollowbar
Custom Cut Warehouse 1
Weight/Lineal Foot
184.35 pounds
Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Mechanical Properties
Property Value
Brinell hardness 3000 kg load 180 - 302
Rockwell Hardness B scale 89 - 107
Density g/cm^3 7
Elongation Typical % 1
Modulus of Elasticity KSI x 10^3 18
Melting Point °F 2050 - 2120
Specific Heat BTU/lb-°F (32-212F) 1
Tensile Strength KSI 40
Thermal Conductivity BTU-in/hr-ft^2-°F 370
Shear Strength KSI 58
Reduction of Area % 2
Chemistry Information: G2 Dura-Bar Cast Iron
Element Percentage
C 2.7 - 4
Sb 0.02 - 0.2
Cr 0.05 max
Cu 0.05 - 0.3
Mn 0.6 - 0.95
Fe 95
P 0.05 - 0.2
Si 1.8 - 3
Sn 0.1 - 0.3
S 0.03 - 0.07
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