Ceramic Material Data
Porcelain is the European equivalent of Bone China with an initial firing temperature of 960ºC, and a secondary firing temperature of between 1400°C and 1450°C. The typical body composition consists of 50% china clay, 25% feldspar, and 25% quartz which gives porcelain its renowned strength.
The advantages of porcelain are it's smooth, resistant glaze, which allows for stacking without scratching, a high chip-resistance, and a lead-proof non-porous and white translucent body.
Porcelain without metallic banding is suitable for repeated use in the oven, microwave, and dishwasher.
If a metallic band (normally gold or platinum) is used on the porcelain, which is hand applied after firing and is very soft, over a period of time it may fade if not properly cared for. Therefore, it is recommended to be extra careful when stacking, it should never be used in an oven or microwave, and is only suitable for dishwashing occasionally, using a recommended cleaning product.
Earthenware has an initial firing temperature of between 1100°C and 1180°C, and a secondary firing temperature of between 950°C and 1040°C. The typical body composition consists of 50% normal clay, 35% quartz, and 15% chalk spar (Dolomite).
Stoneware has an initial firing temperature of 850°C, and a secondary firing temperature of between 1180°C and 1280°C. However, if the items are undecorated, it need only be fired once at a temperature between 1180°C and 1280°C. The typical body composition consists of 45% normal clay, 40% quartz, and 15% feldspar (or different Cornish stone).
The advantages of stoneware are it's very resistant glaze, which allows for stacking without scratching, and is extremely tough.
Stoneware is suitable for repeated use in the oven, microwave, and dishwasher.
A reactive glaze is a variegated glaze that produces unique mottled effects on ceramics, this means that no two items are likely to be the same, this is by design, and part of the charm and beauty of reactive glazes. For a more in-depth discussion of reactive glazes, including technical information, please see this excellent write up by DigitalFire.com.
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