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≤ 1–– –9–2,3545–60–5,35,71,41350–––– ≤ 1– ––11–2,4555–75–5,36,31,41400– –––very good1,5900 70

MATERIALS

Ceramics for Kilns - 14077 PROPERTIES

1) ≤ 1– –5309–2,3545–60–5,3 5,71,413501600–– –very good2800 78-80
UnitAlsint 99,7 Pythagoras 1800 Z Pythagoras Halsic-I Halsic-S Alsint porous Sillimantin 60 NG Sillimantin 60 Sillimantin 65 Sillimantin KS SiC (clay bonded) Quarzgut Halsic-R Halsic-RX

Impervious Materials Porous Materials

Al
2 O
3 contentAlkali contentSiC contentSi content (free)Type acc. to DIN VDE 0335Water absorption Leakage rate at 20°CDensityFlexural strength 20°C (3-point) Flexural strength 1300°C (3-point)Young’s modulusHardness (Mohs scale)Thermal expansion 20 - 700°CThermal expansion 20 - 1000°C Thermal conductivity 20 - 100°CMax. working temperature 99,7–––799 ≤ 1– ––6 –2,6560–85–5,25,7–1650––––good8,5900 72-74 ≤ 0,1–5–2,780-100 ≤ 0,1–5–2,780-100 ≥ 99 ≤ 0,2–3,0150–15085,66,061600––2610 ≤ 0,210 ≤ 0,1– ≤ 0,210 ≤ 0,1–3,1240-280 ≤ 0,1–3,1350-400
-10 -10 3 · s
-1 g · cm
-3 3,75-3,94300–300-38097,88,6251700 160018002610 2,6120–10085,46,021400 150015002610 MPaMPaGPa–10
2) 2) 2) 2) 2) 250-300370–3,74,31001350 370- 420 –––7,88,6–1700––––good1-3– 72-74
3) 90-110280–3,94,5351600 90-110280–3,94,5351650
2) 420–4,5 5,01241600 30-40––0,5-0,9–1000–– ––very good
-6 · K
-1 10
-6 · K
-1 W · m
-1 · K
-1 5) 5) 5) 5) 4) °C °C°CkV · mm 2000
6) 2000
6) Permissible continuous temperature for protection sheaths acc. to DIN 43724Permissible continuous temperature for insulating rods sheaths acc. to DIN 43724Dielectric strength acc. to IEC 672-2Volume resistivity at D.C. 20°CThermal shock resistancePore size (average) Specific heat capacity 20 - 100°C %% %%–%hPa · dm ––––very good–900 –– – –––verygood–1000 99,5– –––2-7– 99 – –––very good24–
-1 Ω · cm–µmJ kg
14 13 13 ≤ 0,2– ––> 99 good–900 760,5– –– good–900 603,0– –610 good–900 ––88-928-12– very good2– ––70-90––8-13–2,2-2,530–––55 –1300–– ––very good3– –– ––4-6–1,92-2,0030-4045-60
-1 · K
-1 The physical properties stated above result from test pieces. These values can only be used as a reference to other forms and dimensions depending on manufacturing process, geometry, surface finish and machining. In practice, e.g. Alsint 99,7 components have a flexural strength of between 160 and 340 MPa. 1) properties for general information only due to different qualities, 2) 4-point bending strength, 3) at 700°C, 4) depending on load, 5) in oxidising atmosphere, 6) in inert atmosphere.

HALDENWANGER Physical

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