15N20 Nickel Alloy Steel 2.5 x 50 x 900mm
15N20 Nickel Alloy Steel 2.5 x 50 x 900 mm.
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15N20 Nickel Alloy Steel 2.5 x 50 x 900 mm. This is a simple carbon steel also containing 2% Nickel. Its primary use by bladesmiths, gunsmiths and other manufacturers of “Damascus” pattern welded steel is to provide a contrasting layer when forge welded to simple carbon steels. It can also be used like 1075 or 1084 as a cutlery steel in its own right. Unlike most 15N20 that is supplied hardened to 40-50 HRC, this 15N20 is annealed soft to below 20 HRC.
15N20 Recommended Working Sequence
Forging: 1175°C. Do not forge below 815°C
Normalizing: Heat to 870°C. Cool to black in still air. Follow up with further refinement cycles at descending temperatures.
Annealing: Heat to 815°C. Furnace cool to 650°C at a rate not exceeding 28°C per hour.
Grinding or Machining
Hardening: Austenitize at 815°C. Quench in Houghton’s G-Quench or equivalent medium speed oil.
Tempering: As-quenched hardness of approximately 65 HRC, recommend tempering at 200°C for 2 hours, twice.
|Dimensions||90 × 5 × 0.25 cm|