Onyx Black Porcelain (5kg) 1200-1240C
- Sku - 164-ONYX
- In Stock
164-ONYX - Onyx Black Porcelain | Recommended firing range 1200-1240C / Cone 6-7*
Onyx Black Porcelain takes on a beautiful black/graphite colour when fired as recommended to the upper part of its firing range. Onyx is coloured with ceramic stain. The fired colour may turn brown above the recommended firing range. It is highly plastic mak…
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Description
Onyx Black Porcelain (5kg) 1200-1240C
164-ONYX - Onyx Black Porcelain | Recommended firing range 1200-1240C / Cone 6-7*
Onyx Black Porcelain takes on a beautiful black/graphite colour when fired as recommended to the upper part of its firing range. Onyx is coloured with ceramic stain. The fired colour may turn brown above the recommended firing range. It is highly plastic making it ideal for wheel-throwing and modelling alike. Suitable for tableware. Supplied in a 5kg pack. Compatible with Aneto Porcelain 164-ANET. Onyx Black Porcelain is suitable for tableware (food-safe), according to ISO 6486. The manufacturer recommends zinc-free clear glaze such as Mayco SW004 for Onyx Black Porcelain.
Indicative texture 1 (Smooth 1-Coarse 10).
SIO2 Technical Data:
- Biscuit: Cone 06 (1020ºc)
- Water content: 20%
- Plasticity (IP Atterberg): 11
- Carbonate content (CaCO3): 0%
- Drying shrinkage: 5.4%
- Firing shrinkage at Cone 6: 10.3%
- Porosity (water absorption) at Cone 6: 0.0%
- Dry bending strength: 3.1 N/mm2
- Fired bending strength at Cone 6: 39.8 N/mm2
- Thermal coefficient (at 25-500ºC): 54.3x10-7ºC-1"
(*) Firing range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions.
To comply with RHA regulations concerning tail-lift deliveries (where there is no fork-lift truck available at the delivery point) the maximum net weight of clay we are now permitted to pack on standard pallet is 950kg (76 x 12.5kg bags of clay). To achieve the best price for your clay, please add the full 1000kg to your cart when checking out and we will make the necessary weight adjustment/refund when we receive the order.
We have added cone numbers to our firing ranges for guidance purposes. Please refer to the 60c/hr column for large regular or self-supporting cones on the Orton Cones Conversion Chart which can be downloaded here.
Technical data is approximate and provided for guidance only. Our Clay Analyses sheet can be downloaded here.
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Downloads
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Delivery & Returns
Delivery & Returns
Full Delivery & Returns information at this link>
DELIVERIES
Current Delivery Times: Please check the latest update at this link>
Delivery Costs: Your carriage charge will be calculated at checkout based upon the volumetric weight of your order, and your location. If for any reason your delivery charge cannot be calculated at checkout, you will see a message explaining that our sales team will contact you with a quote. You will be under no obligation to accept this and have the right to cancel your order.
We deliver throughout the UK and overseas using a trusted third-party distribution network. Delivery is to kerbside or letterbox only.
Although carriers will endeavour to deliver within the agreed timeframe, unexpected delays due to weather conditions, breakdowns, traffic and other factors may cause some disruption to schedules.
IMPORTANT INFORMATION
We are bound by the terms and conditions of our carriers therefore we cannot pursue a claim if these instructions are not followed:-
Special Delivery Conditions: You must inform us at point of order of any special conditions such as restricted access or opening times, otherwise you will be liable for any consequential costs incurred.
Damage/Missing Items: You must check your delivery carefully before providing a ‘clear’ signature to the driver. Outward signs of damage/disruption to packaging must be noted alongside your signature. You must notify Potclays of damage or missing items within 24 hours of delivery.
RETURNS
Returned Goods (Non-faulty): Subject to our prior consent having been obtained, products can be returned to us in an unused condition within 30 days of invoice date. An administrative charge will be levied of 10% of the nett value plus transport, but subject to a minimum charge of £2.00.
Returned Goods (Faulty): If merchandise is returned because of some defect or due to error on our part, full credit/refund will be given. However, customers must contact us in advance so that making methods and user error can be ruled out.
