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Magnum 4140 Alloy Steel Round Bars
Magnum 4140 Alloy steel is a medium carbon alloy steel that provides good harden ability and displays high strength after heat treating. It is a common alloy which is often used for gears, motor shafts, axels, and other applications where high torque loading is a factor. the 41xx series alloy steel is widely used in fastener and heavy equipment industries. It is available in bar stock and also hollow round tubing in a variety of sizes. Magnum 4140 alloy steel is available in both a heat treated hot finished and a cold drawn annealed bar. In the heat treated state, Magnum 4140 alloy steel retains the ASTM A-193 Grade B7 specification most often used in the fastener industry.

Stock Sizes:

Heat Treated, Hot Finished (ASTM A-193 Grade B7)	1/2" - 3 1/2" Diameter
Cold Drawn Annealed	1/2" - 4" Diameter
Turned Ground and Polished	1/2" - 3/4" Diameter

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Sascoloy 4340 Alloy Steel Round Bars
Sascoloy 4340 is ultra high strength alloy steel that provides deep harden-ability and combines high ductility, toughness and fatigue resistance. It retains these properties over a wide range of environmental conditions and is often specified for severe service or where high strength in heavy sections is required. Consideration of mechanical properties is important in determining the suitable alloy steel for a specific end use. The actual resistance of Sascoloy 4340, quenched and tempered steel is directly related to the hardness and surface stresses, as hardness increases, the fatigue limit also increases.

Sascoloy 4340 retains good machinability at a relatively high hardness level. Therefore, it is the desired alloy steel for ultra high strength equipment parts that require machining to achieve final configuration. Sascoloy 4340 Ultra High Strength Steel is the grade of steel to which all other alloy grades are compared. All bars are quenched and tempered, machine straightened and stress relieved.

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Magnum 1045 Hot Rolled Carbon Steel Round Bars
A medium carbon, heat treatable steel that exhibits good strength at low brinell hardness levels, but has characteristically low tolerance to fatigue. This product is widely used in low torque applications such as light duty motors, track pins and some fastener specifications in its heat treated state.