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For the convenience of working with Zladinox composite styles, blanks are provided with recommendations for heat treatment and chemical etching (pattern detection).
Specifications of high-carbon compounded steel ZD-0801 (У8А-7ХНМ)
Designation: for manufacturing blades of knives with high cutting and working properties.
Type of delivery: band or square according to the dimensions of the customer.
Hardness of steel after thermal treatment
State on delivery, cycles of heating |
HRC (НВ) |
Annealing: beating from v< 100 degress/hour to 750-780 C°, cooling with furnace from i<50 degress/hour to 500-600 C°, air |
(207-255) |
Heat treatments: 780-800 C°, oil. Tempering 180-220 C°, 1,5 hour, air |
58-62 |
Isothermal quenching: 800-820 C°, molten salt 320-330 C°. Tempering 330 C°, 30 min, air. |
48-52 |
Technological properties
The temperature of forging, C°: beginning 1180, finish 800.
Composition and cycle of etching
5% solution of nitric acid in water for 5-10 minutes, followed by neutralization in a 10% solution of soda ash in water.
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