Technical Specifications
Description
A rich terra cotta colour firing body for throwing and
pressing. This body is unique in Australia having a precise thermal expansion
for functional glaze fit.
Mesh : 80#
Recommended Firing
|
Bisque |
Glaze |
|
1000° C |
1060° C to 1130° C |
|
Orton Cone 06
at 150° C per hour |
Orton Cone 04 to 02
at 150° C per hour |
Coefficient of Expansion
Sample fired at 1080° C, Orton cone 03½. Linear expansion is
0.380% at 500° C and coefficient is 83.33 x 10-7 from 200° C to 500° C.
|
Chemical Analysis |
Shrinkage (fired) |
|
SiO2 |
73.14% |
From wet to dry |
2.3% |
± 0.5% |
|
Al2O3 |
18.86% |
From dry to bisque |
0.3% |
± 0.2% |
|
TiO2 |
0.78% |
From bisque to glaze |
1.0% |
± 0.5% |
|
Fe2O3 |
0.61% |
|
CaO |
3.42% |
Water absorption |
|
MgO |
0.62% |
Biscuit |
1000° C |
Orton Cone 06 |
14% |
|
Na2O |
0.59% |
Fired |
1200° C |
Orton Cone 5 |
less than 2% |
|
K2O |
1.41% |
Fired |
1225° C |
Orton Cone 6 |
0% |
|
L.O.I. |
7.89% |
Glazes
101 is our standard clear lead free glaze for Terra Cotta
Earthenware. See Walkers Earthenware glaze range for functional and decorative
glazes. If making your own glazes contact us for technical assistance if
required.
