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G2

Cast Iron G2 Product Guide


Applications | Specifications | Mechanical and Chemical Data


Overview

Cast Iron G2 Dura-Bar is a non-ductile, pearlitic gray iron, exhibiting good machinability, wear resistance, and vibration dampening. G2 will not yield nor elongate before fracture.

G2 Dura-Bar can be oil quench hardened from 1600 F (885 C) to a minimum hardness of Rockwell C 50 on the outside of the bar. The inside diameter hardness will be less than Rockwell C 50.

G2 Dura-Bar is manufactured through the Continuous Cast process, which is actually closer to extrusion than casting. However, this process causes all of the impurities in the molten iron to float to the top of the crucible, away from the metal being used to create the bar. This removes porosity and other impurities common to other cast iron grades.

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.

 

Common Trade Names

Gray Iron, Class 40 

 

Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

Products

Purchase Hollowbar G2 | Rectangle Bar G2 | Round Bar G2 | Square Bar G2

Applications

  • Automotive Parts
  • Power Transmission Parts
  • Gears
  • Rotors
  • Pistons
  • Valves
  • Rollers
  • Bushings
  • Chucks
  • Flywheels
  • Pile Drivers
  • Ram Pulleys
  • Housings
  • Motorcycle Disc Brakes

Cast Iron G2 Specifications

 

ASTM

A48



Physical Properties G2
 
Density 0.253 lb/in3
Ultimate Tensile Strength 40 ksi
Shear Strength 58 ksi
Hardness Rockwell | Brinell B87-105 | 180-302
Elongation at Break Percentage 1%
Reduction of Area 2%
Modulus of Elasticity 18,000 ksi
Poisson's Ratio 0.29
Machinability Percentage 125%
Melting Point 2,050 °F
Specific Heat 1.21 x 10^-1 BTU/lb-°F
Thermal Conductivity 370 BTU-in/hr-ft^2-°F
Electrical Conductivity 7.4% IACS


Chemistry Information
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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