Class 40 Cast Grey Iron

Description

G2 is a pearlitic gray iron containing Type A graphite. Gray Iron bars made to this specification have optimal strength, wear and hardness when compared to the other gray iron grades. This material is well suited for applications requiring high resistance to wear and response to heat treatment. This specification is similar to ASTM A48 class 40.

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: Continuous Caster Rolls, Foot Rolls, Table Rolls, Torch Rolls
Transportation: Brake Rotors, Cylinder Liners, Gears, Lash Adjusters, Pulleys, Shock Absorber Pistons, Valve Guides, Valve Seat Inserts

Specifications

In the United States, the most commonly used classification for gray iron is ASTM International standard A48. This classifies gray iron into classes which corresponds with its minimum tensile strength in thousands of pounds per square inch (ksi); e.g. class 20 gray iron has a minimum tensile strength of 20,000 psi (140 MPa). Class 20 has a high carbon equivalent and a ferrite matrix. Higher strength gray irons, up to class 40, have lower carbon equivalents and a pearlite matrix.

Available Forms

• Bar
• Plate
• Rectangle Bar
• Square Bar
• Tubes