Calcium silicate at 600 °C — heat-loss table

λ = 0.090 W/m·K at mean temperature ((600+20)/2 = 310 °C, using the Inzonex generic class curve). Pipe losses per metre, four thicknesses, savings vs bare.

Pipe	30 mm W/m	50 mm W/m	80 mm W/m	100 mm W/m	BARE W/m	Surface @50 mm	Saving €/m·yr @50 mm	t CO2/m·yr
DN25	270	217	178	163	609	72 °C	€191	0.70
DN50	392	302	239	215	1,099	80 °C	€388	1.42
DN80	517	388	299	266	1,620	85 °C	€601	2.20
DN100	627	463	350	308	2,083	89 °C	€790	2.89
DN150	858	618	456	396	3,067	93 °C	€1,195	4.37
DN200	1,075	762	553	477	3,992	96 °C	€1,576	5.77
DN300	1,519	1,058	752	640	5,902	99 °C	€2,363	8.65

Assumptions: 20 °C ambient, still air (h=10 W/m²·K combined), €0.05/kWh fuel, 8000 h/yr, 82% efficiency, 0.183 kg CO2e/kWh (DESNZ 2024). Flat surfaces at this duty: bare 5,800 W/m² → 889 W/m² at 50 mm (≈€2,396/m²·yr saved). Method: ASTM C680 simplified — methodology. Your exact case: free calculator.

Calculation basis. This table uses an Inzonex generic material-class curve, not a declared value for a named product. Curve points at mean temperature: 50 °C: 0.055 W/m·K; 100 °C: 0.062 W/m·K; 200 °C: 0.075 W/m·K; 300 °C: 0.089 W/m·K; 400 °C: 0.104 W/m·K. Linear interpolation is used between points; the nearest endpoint is retained outside this range. No product performance outside its declared range is established. Named-product conductivity values and primary documents are listed separately; do not substitute a generic class result for a product specification.

Context

All materials at 600 °C

Material	λ W/m·K	Loss W/m	Surface	Saving €/m·yr	t CO2/m·yr
Stone wool (mineral wool)	0.092	470	90 °C	€787	2.9
Ceramic fibre (RCF / AES blanket)	0.076	398	79 °C	€822	3.0
Aerogel blanket	0.043	236	55 °C	€901	3.3
Calcium silicate	0.090	463	89 °C	€790	2.9
Expanded perlite	0.092	469	90 °C	€787	2.9
Microporous (fumed-silica) panels	0.026	146	42 °C	€945	3.5
Silica needle mat / fabric	0.069	362	74 °C	€840	3.1

DN100 pipe at 600 °C, 50 mm insulation, per metre of pipe; bare loss 2,083 W/m. λ at mean temperature; € and CO2 per metre·year at €0.05/kWh, 8000 h, 82% efficiency. Method: ASTM C680 simplified (h=10).

Material datasheet: Calcium silicate → · temperature class: by temperature →

FAQ

Questions on this topic

How much heat does a pipe at 600 °C lose with calcium silicate?

With 50 mm at 600 °C (λ=0.090 at mean): DN50 loses 302 W/m, DN100 463 W/m, DN200 762 W/m — vs 2,083 W/m bare for DN100. Full table on this page.

What surface temperature does calcium silicate give at 600 °C?

≈89 °C with 50 mm on DN100 (20 °C ambient, still air). Personnel-protection targets (≤45–60 °C) may need more thickness — see the 80/100 mm columns.