General Info
ZIRCAR Refractory Sheet Type RSLE-501 is a low expansion high strength reinforced silica matrix composites in a cylindrical form. This remarkable material was designed for use as a high strength, durable insulator in induction heat treating applications. RSLE-501’s very low thermal expansion coefficient and high hot strength combine to give it thermal shock resistance not found in other structural ceramic materials.
RSLE- 501 exhibits a very low coefficient of expansion 0.3 x 10-6 °C which provides remarkable resistance to the thermal shock up to 1200°C (2192°F) in an oxidizing atmosphere and permits its use with rapid variation in temperature in that zone. Beyond 1200°C (2192°F) it will transforms into a crystalline structure.
RSLE-501 also exhibits exceptional non-wetting properties when used in contact with molten aluminum making it useful in numerous molten aluminum contact applications.
Unique properties of RSLE-501 are:
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A low thermal conductivity.
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An excellent electrical insulation.
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A high chemical purity.
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An excellent resistance to corrosion (from molten metal and glass)
RSLE-501 is 100% organic free and contains no refractory ceramic fiber. It is readily machined to precision tolerances with conventional tooling.
Properties
| Thermal Expansion Coeff. | |
| Room Temp. to 800°C(1472°F) | 0.3 x 10-6/°C |
| Nominal Composition, wt% | |
| SiO2 | 99.7 |
| Other Oxides | <0.3 |
| Organics | 0 |
| Density, g/cc(pcf) | 1.28(80) |
| Porosity, % | 31 |
| Color | White |
| Hardness, Durometer “D” | 87 |
| Charpy Impact Strength, ft-lb | 0.8 |
| Compressive Strength**, MPa(psi) | |
| at 2.7% consolidation | 48(7000) |
| Modulus of Rupture**, MPa(psi) | 30(4300) |
| Thermal Conductivity** ASTM C-1113 | |
| W/m°K(BTU/hr ft² °F/in) | |
| 200°C(392°F) | 0.55(3.8) |
| 400°C(752°F) | 0.64(4.4) |
| 600°C(1112°F) | 0.61(4.2) |
| 800°C(1472°F) | 0.67(4.6) |
| 1000°C(1832°F) | 0.75(5.2) |
| Volume Resistivity, ohm-cm | |
| ASTM D-257-93 | 7.5 x 109 |
| Dielectric Strength, volts/mil | |
| ASTM D-149-95 | 43 |
* Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the material experiences.
** Properties expressed parallel to thickness.
‡ Properties expressed perpendicular to thickness.
Composition
- High Hot Strength
- Immune to Thermal Shock
- Fully Machinable
- Non RCF
Instructions
AVAILABILITY
Please call, fax or e-mail for pricing and availability.
| Item # | Description |
| IS01 | RSLE-501 Cylinder, 2″ ID X 2 1/2″ OD X 30″ L |
| IS02 | RSLE-501 Cylinder, 3″ ID X 3 1/2″ OD X 30″ L |
| IS03 | RSLE-501 Cylinder, 4″ ID X 5″ OD X 30″ L |
| IS04 | RSLE-501 Cylinder, 5″ ID X 6″ OD X 30″ L |
| IS05 | RSLE-501 Cylinder, 6″ ID X 7″ OD X 30″ L |
| IS06 | RSLE-501 Cylinder, 7″ ID X 8″ OD X 30″ L |
PRICES ARE SUBJECT TO CHANGE WITHOUT NOTIFICATION AND ARE SUBJECT TO ZIRCAR REFRACTORY COMPOSITES, INC. TERMS AND CONDITIONS. ALL PRICES ARE F.O.B. FLORIDA, NY AND ARE IN U.S. DOLLARS
Download the RSLE-501 Cylinders PDF File
SDS (in PDF format)
Other Information
AVAILABILITY
Please call, fax or e-mail for pricing and availability.
| Item # | Description |
| IS01 | RSLE-501 Cylinder, 2″ ID X 2 1/2″ OD X 30″ L |
| IS02 | RSLE-501 Cylinder, 3″ ID X 3 1/2″ OD X 30″ L |
| IS03 | RSLE-501 Cylinder, 4″ ID X 5″ OD X 30″ L |
| IS04 | RSLE-501 Cylinder, 5″ ID X 6″ OD X 30″ L |
| IS05 | RSLE-501 Cylinder, 6″ ID X 7″ OD X 30″ L |
| IS06 | RSLE-501 Cylinder, 7″ ID X 8″ OD X 30″ L |
PRICES ARE SUBJECT TO CHANGE WITHOUT NOTIFICATION AND ARE SUBJECT TO ZIRCAR REFRACTORY COMPOSITES, INC. TERMS AND CONDITIONS. ALL PRICES ARE F.O.B. FLORIDA, NY AND ARE IN U.S. DOLLARS