A blue bar that separates the head section of the site from the body

GX Gray Iron


GX is a pearlitic gray iron offered in a variety of small and large rounds and rectangles for non-typical size applications. GX benefits include wear resistance, noise and vibration damping, and can be heat treated using conventional methods. Download the GX Gray Iron Product Brief, or X Products for all X grades.


Typical Applications

Automotive:

Gears

Fluid Power:

Cylinder blocks, Glands, Manifolds, Pistons, Rotors, Spools, Valves

Machinery:

Bushings, Gears, Gibs, Housings, Pulleys, Rams, Sheaves, Side Frames, Slides, Spindles, Ways

Miscellaneous:

Aluminum Molds Plates, Cams, Chain Sheaves, Core Boxes, Dies, Pattern Plates, Wheels

Oil and Gas:

Bridge Plugs, Cement Plugs, Cones, Mandrels, Retainers, Slips

Power Transmission:

Gears, Pulleys

Pump and Compressor:

Gears, Housings, Liners, Pistons, Rollers, Rotors, Seals

Steel Mill/Foundry:

Continuous Caster Rolls, Pattern Plates, Core Box Patterns, Foot Rolls, Table Rolls, Torch Rolls

Transportation:

Brake Rotors, Cylinder Liners, Gears, Lash Adjusters, Pulleys, Shock Absorber Pistons, Valve Guides, Valve Seat Inserts


Microstructure

The core microstructure will consist of Type A graphite flake, per ASTM A247, with a matrix containing a minimum of 90% pearlite. The edge or rim will have a combination of Type D and Type E graphite flake and a matrix with a mixture of ferrite and pearlite. The rim will contain as much as 5% carbides.

A graph detailing the microstructure of the GX

Chemical Composition

ElementPercentage
Carbon2.70 - 3.45%
Silicon2.10 - 2.90%
Manganese0.50 - 0.90%
Sulfur0.04 - 0.1%
Phosphorus0.15% Max

Mechanical Properties

Hardness values listed are minimum and maximum across the bar. Hardness values for rectangles and squares are a function of the height and width ratios and will be supplied on request.

Size Range

InchesMillimeters
1.000 - 28.00025 - 711

BHN

MinMax
183285

Tensile Strength

GX conforms to ASTM A48 Class 40 - download the GX Class 40 Tensile Table. Tensile data from the as-cast bar in conjunction with separately cast tensile data, correlates to a Class 40 Gray Iron.


Call us today to discuss your application at 888-DURA-BAR (888.387.2227) or click to complete our quote form.