| 21. | Tungsten is a hard metal often added to steel to make it stronger and more elastic.
|
| 22. | The pitchfork was originally made entirely of wood; today, the tines are usually made of hard metal.
|
| 23. | The plutonium is encased in layers of iridium, a very hard metal, and graphite, a form of carbon.
|
| 24. | He takes his first step, I settle onto the hard metal and leather saddle, and pain is instant.
|
| 25. | But most of the deaths on the rails were from collisions between hard metal and soft human bodies.
|
| 26. | Repeated testing showed enDURO tools were effective in titanium and other hard metals even using low-horsepower machining centers.
|
| 27. | Hard metal or ceramic workpieces cannot flex beyond the cutting edges, so the tools remove material from them.
|
| 28. | But it was a hard metal to get past the board of health types, who insisted it was toxic.
|
| 29. | These are rings made of a hard metal, and are sprung into a circular groove in the piston head.
|
| 30. | However, these hard metal brushes tended to scratch and groove the smooth commutator segments, eventually requiring resurfacing of the commutator.
|
