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Across 4. Non Recyclable plastics (2 words) 6. Strength to resist being pulled apart 7. The only metal not solid at room temperature 8. Inability to flex without shattering 9. Material that adds hardness to steel 10. Strength to resist opposing direct forces 13. Ability to be shaped under force 14. Two or more materials combined at a non-molecular level 16. Contains Iron 17. Small particles fused together with heat or electricity and pressure (Sintering) 18. Ability to be drawn through a die 20. Strength against opposing offset forces

Down 1. Two or more materials combined to form a new material 2. Ability to allow the flow of heat or electricity 3. Removing impurities from raw materials 5. Bending under load and keeping the new shape 11. Bending under load and returning to shape 12. Ability to resist surface wear 15. One of the first alloys, has an age named after it 19. Raw material mined from the Earths crust