Grey Speckled Stoneware WMS-2002GG

From the manufacturers website:

This fine-grogged, cement-coloured stoneware body features spots that become visible at temperatures above 1150°C. Suitable for throwing and hand-building small pieces.

Application Temperature:1000°C - 1250°C

Specifications:

Grog / Graining: 20% / 0-0.2mm

Drying Shrinkage: 5.3%

Firing Shrinkage:1150°C: 3.0%

1200°C: 4.8%

1250°C: 5.2%

Water Absorption:1150°C: 5.5%

1200°C: 3.0%

1250°C: 1.8%

Sintering (Water Absorption ≤3%): Approx. 1200°C

TEC (20-400°C): 64 * 10⁻⁷/K (Pre-firing: 1200°C)