Phosphate Coating

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Phosphate coating is especially effective where it is desirable to reduce friction, galling, and scoring on ferrous surfaces. Phosphate coating reduces wear and is lubricative, which facilitates break-in of bearing surfaces. It inhibits corrosion, and creates a superior substrate for paint and other industrial finishes.

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Phosphate coating's sponge-like surface holds oil to create a continuous film between moving metal parts, thereby making an outstanding break-in medium. High strength bolts that were tested repeatedly at 13,800 foot pounds of torque did not gall (more than 120,000 PSI of stress).

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Typical applications for phosphate coating include:

• Gears

• Bearings

• Fasteners

• Actuators

• Cylinder sleeves

• Sprockets

• Marine components

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H.M. Elliott phosphate coating meets or exceeds specification MIL-P-16232, Type M.