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HE Relief Testing for Zinc Plating

I would like to perform a hydrogen embrittlement relief test on parts coated with zinc plating (ASTM B633, Type II, SC3...0.0005 - 0.0008-inch thick). According to ASTM F519, testing should be conducted at sustained load (75% UTS) for 200 hours. Would this be adequate for zinc plating, since this spec. seems to be written around cadmium plating? Thanks in advance.

Marc Pepi
US ARMY Research Lab - APG, Maryland
2000

The resulting embrittlement of the steel will be the same whether the hydrogen is from Cd or Zn. Therefore, the same sustained load test would be a reasonable evaluation for either plating type.

Larry Hanke
Minneapolis, Minnesota
2001

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