Rust
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==Hydrogen embrittlement== | ==Hydrogen embrittlement== | ||
− | All acids contribute hydrogen to metal. This causes hydrogen embrittlement, which weakens the metal. | + | All acids contribute hydrogen to metal. This causes hydrogen embrittlement, which weakens the metal. Untrue: you can "bake" the hydrogen out at 400 degrees F, after exposing a metal to acid. |
==Fiberglass resin patches== | ==Fiberglass resin patches== |