40% alumina

1600°C — standard, arch, split, slab

70% alumina

1750 – 1800°C — 5.2 kg, standard & arch

Zirconia

2000°C — 230×115×38mm

Insulating brick

Lightweight, ~2 kg, 230×115×75mm

Firebricks & Insulating Bricks

• 40% alumina
• 70% alumina
• Zirconia 2000°C

Four brick grades cover most furnace work. 40% alumina is the general-duty workhorse at 1600°C, stocked in standard, arch, split and slab shapes for curved and flat builds. 70% alumina handles 1800°C with the slag resistance and hot strength steel furnaces and ladles demand. Zirconia reaches 2000°C where alumina gives out, and lightweight insulating brick cuts wall losses at around 2kg apiece.