Clue: Toughen,as steel
We have 1 answer for the clue Toughen,as steel. See the results below.
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Related Clues:
- Temper, as metal
- Strengthen
- Toughen, as glass
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- Heat-treat
- Treat with heat to toughen
- Strengthen, as glass
- Temper
- Heat to remove stress from, as glass
- Toughen
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