Coating: ATP-641, Turco, or similar high temperature anti-scale/decarburization coatings can be used in replace of foil to reduce scale or surface decarburization.
Austenizing: Heat oven to Austenizing temperature (1475°F / 800°C)
When oven reaches Austenizing temperature, place material in oven and soak for 10 minutes. Soak time can vary from 5 to 15 minutes based on heat treating equipment and cross section but in most cases, a 10 minute soak time is ideal.
**Do not put blades in oven when cold, insert at or just below austenizing temperature–temperature variances is for difference in stock thicknesses and a window of margin for error.
Quenching: Suggested quench oil: Parks 50–expected as quenched hardness may be lower if a slower quench oil or non-industrial quench medium is used.
Tempering: Typical harnesses of 1095 carbon steel after tempering for 2 hours at different temperatures | |||
Grade | Temperature, °C (°F) | Rockwell hardness, HRC | |
1095 high carbon steel, carbon content: 0.95% | 205°C (400°F) | 58 HRC | |
260°C (500°F) | 57 HRC | ||
315°C (600°F) | 52 HRC | ||
370°C (700°F) | 47 HRC | ||
425°C (800°F) | 43 HRC | ||
480°C (900°F) | 42 HRC | ||
540°C (1000°F) | 41 HRC | ||
595°C (1100°F) | 40 HRC | ||
650°C (1200°F) | 33 HRC |