Category: Technology, Science & Nature, Products

SGHT is an ODS ferritic iron-chromium-aluminum (FeCrAl) alloy produced through advanced powder metallurgy. Unlike conventionally melted and cast FeCrAl resistance wire, SGHT incorporates ultrafine yttrium-based oxide particles that are mechanically alloyed into the metal matrix. These nano-scale dispersoids remain stable even above 1300°C, pinning grain boundaries and impeding dislocation movement. The result is a material that retains creep strength and sag resistance at temperatures where standard FeCrAl alloys would rapidly soften. Manufacturing involves high-energy milling of pre-alloyed powder, followed by hot isostatic pressing and hot extrusion into wire or tube form, yielding a microstructure with an inclusion rating below 3.5 and remarkably few inclusions larger than 3.0 µm.