SSB2
Cone 2 · Bends 1112°C (2034°F) at 15°C/hr (slow) · Bends 1142°C (2088°F) at 60°C/hr (medium) · Bends 1164°C (2127°F) at 150°C/hr (fast) · 63.5 mm (2½ in) tall, ceramic · Built-in base — no cone plaque, clay pat or wire holder needed · Mounting height and 8° angle preset at the factory · Endpoint is a 90° bend, tip level with the base · Red iron-bearing — no Iron Free SSK cone is published at this number · Contains crystalline silica — do not grind or breathe the dust
$0
Bends at 1142°C (2088°F) at 60°C/hr, with slow and fast rates published as well. The base is moulded in, so it needs no plaque or holder. For craft and art bodies, wall tile and glazes.
Cone 2 in Orton's self-supporting (SSB) series. It bends at 1112°C (2034°F) at 15°C/hr, 1142°C (2088°F) at 60°C/hr and 1164°C (2127°F) at 150°C/hr, each measured over the firing's last 100°C. The patented base is moulded in, so it stands on the kiln shelf straight from the box, with no plaque or wire holder and no mounting angle to set. Those figures are not a tolerance: a cone measures heat-work, time and temperature combined, so the firing rate decides which number applies. This is a red iron-bearing composition and can fire matte, green or bloated without oxygen, and Orton publishes no Iron Free SSK cone at this number.
