Technical Specifications
Description
Grey with buff speckle firing stoneware ideal for production
throwing and pressing.
Renowned as the best production throwing body available.
Mesh : 60#
Recommended Firing
|
Bisque |
Glaze |
|
1000° C |
1260° C to 1300° C |
|
Orton Cone 06 at 150° C per hour |
Orton Cone 8 to 10 at 150° C per hour |
Coefficient of Expansion
Sample fired at 1280° C oxidizing atmosphere, Orton cone 9.
Linear expansion is 0.314% at 500° C and coefficient is 63.3
x 10-7 from 200° C to 500° C
|
Chemical
Analysis
|
Shrinkage (fired) |
|
SiO2 |
69.19% |
From wet to dry |
4.6% |
± 0.5% |
|
Al2O3 |
23.61% |
From dry to bisque |
1.0% |
± 0.2% |
|
TiO2 |
1.19% |
From bisque to glaze |
8.5% |
± 0.5% |
|
Fe2O3 |
1.29% |
|
CaO |
0.28% |
Water absorption |
|
MgO |
0.78% |
Biscuit |
1000° C |
Orton Cone 06 |
11% |
|
Na2O |
0.82% |
Fired |
1225° C |
Orton Cone 6 |
less than 2% |
|
K2O |
2.22% |
Fired |
1280° C |
Orton Cone 9 |
0% |
|
L.O.I. |
6.32% |
Glazes
Functional and decorative glazes are available in the Walkers
Stoneware glaze range. Compatible clear glazes are WSG30 or WSG31 (zinc free).
If making your own glazes contact us for technical assistance if required.
