TYPICAL ANALYSIS OF HIGH SPEED STEEL.
| Carbon | . | 66 | % |
| Tungsten | 18. | 01 | % |
| Chromium | 4. | 50 | % |
| Vanadium | . | 98 | % |
| Phosphorus | . | 023 | % |
| Sulphur | . | 021 | % |
| Manganese | . | 285 | % |
| Silicon | . | 228 | % |
| Iron (by deduction) | 75. | 293 | % |
USES.
Turning, Boring, Planing, Slotting, Shaping Tools. Also Twist Drills, Milling Cutters, Gear Cutters, Taps, Reamers, Special Dies, etc.
HEAT TREATMENT.
Heat slowly in pre-heater to 1700 degrees Fahrenheit. Then rapidly in superheater to 2300 degrees Fahrenheit, taking care not to burn or fuse delicate projections on special tools. Harden either in air blast, or in good clean oil; keeping tool in motion. In all cases merely the end of the tool to white heat. Draw in oil from 400 degrees Fahrenheit to 600 degrees Fahrenheit.
TYPICAL ANALYSIS OF DIE STEEL FOR HOT WORK.
| Carbon | . | 39 | % |
| Tungsten | 8. | 41 | % |
| Chromium | 2. | 10 | % |
| Phosphorus | . | 019 | % |
| Sulphur | . | 017 | % |
| Manganese | . | 315 | % |
| Silicon | . | 234 | % |
| Iron (by deduction) | 88. | 515 | % |
USES.
Hot shear blades, hot punches, header and gripper dies; used in bolt and rivet making. Also excellent for compression sets and in general for all hot work.
HEAT TREATMENT.
Will stand high hardening heats, similar to high speed steel, 1700 degrees Fahrenheit and then 2300 degrees Fahrenheit. Harden either in air or oil. Keep away from water. Draw to 500 degrees Fahrenheit.