REFEL 1240

MICROGRAPH

PHYSICAL DATA

Cold crushing strength¹	>200 N/mm²
Refractoriness under load (T₀₅)²	1700°C
Corrosion resistance in soda lime glass at 1500°C³	index 1 (reference index)
Stone formation in soda lime glass at 1500°C	0
Blistering in soda lime glass at 1150°C^4-5	0
Exudation at 1550°C⁶	index 0.58 (referred to 1532 material)
True density⁷	3.98 g/cm³

¹ DIN EN 993-5
² DIN EN ISO 1893
³ ICG TC11, 120 hours
⁴ Crucible test, 96 hours
⁵ ICG Subcommittee A1 definition
⁶ ICG TC11, 10 cycles
⁷ DIN 66137-2

TYPICAL CHEMICAL COMPOSITION

TYPICAL MINERALOGICAL COMPOSITION

THERMAL CONDUCTIVITY

ELECTRICAL RESISTIVITY

THERMAL EXPANSION

CASTING TYPE