6150 is a fine grained, highly abrasion resistant carbon-chromium alloy steel. Very good shock resistance and toughness are also key properties of this alloy in the heat treated condition.

Applications: Commonly employed in heavily stressed machinery parts including shafts, gears, pinions and also in hand tool components.

Machinability: Machinability is rated at 59% of 12L14 carbon steel.

Welding: This alloy, while difficult to weld, has been successfully joined with all of the common methods. Part preheating and post weld stress relieving are essential components of a successful procedure.

Heat Treatment: Harden at 1600 F and oil quench. Temper for desired properties. Normalizing can be accomplished by heating to 1650 F followed by air cooling. Typical Brinell hardness – 260.

Forging: Forge at 2200 F and air cool.

Annealing: Anneal by heating to 1550 F followed by furnace cooling.

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