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The UK leader in Stud Welding and Refractory products
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The UK leader in Stud Welding and Refractory products
The Saffil® 97 Range is a family of ultra-high-purity polycrystalline wool (PCW) insulation products engineered for continuous operating temperatures up to 1600°C. Manufactured from high-alumina fibres containing approximately 97% alumina and 3% silica, Saffil 97 products provide exceptional chemical stability, thermal performance and resistance to aggressive operating environments.
Designed for the most demanding thermal processing applications, Saffil 97 products exhibit outstanding dimensional stability, low thermal conductivity and extremely low shot content. Their high alumina chemistry provides superior resistance to chemical attack and makes them particularly well suited to hydrogen furnaces, reducing atmospheres and specialised high-temperature manufacturing processes.
Available in blanket, paper and bulk fibre formats, the Saffil 97 Range provides tailored solutions for iron and steel production, aerospace, semiconductor manufacturing, petrochemical processing and advanced thermal management systems
Saffil 97 products deliver exceptional performance in applications requiring maximum chemical stability and thermal reliability.
| Property | Saffil 97 | Saffil 97+ |
| Classification Temperature | 1600°C | 1600°C |
| Melting Point | >1870°C | >1870°C |
| Mean Fibre Diameter | 3-4 Microns | 5.5-7 Microns |
| Typical Chemical Analysis (wt. %) | ||
| Al2O3 | 97 | 97 |
| SiO2 | 3 | 3 |
| Trace | <0.5 | <0.5 |
| Property | Saffil 97 | Saffil 97L | Saffil 97LH |
| Classification Temperature | 1600°C | 1600°C | 1600°C |
| Density | 170 kgs/m³ | 128 kgs/m³ | 112 kgs/m³ |
| Typical Chemical Analysis (wt. %) | |||
| Al2O3 | 97 | 97 | 97 |
| SiO2 | 3 | 3 | 3 |
| Trace | <0.5 | <0.5 | <0.5 |
| Property | Saffil 97LA | Saffil 97HA | Saffil 97HX |
| Classification Temperature | 1600°C | 1600°C | 1600°C |
| Melting Point | >1870°C | >1870°C | >1870°C |
| Mean Fibre Diameter | 3-4 Microns | 3-4 Microns | 3-4 Microns |
| Typical Chemical Analysis (wt. %) | |||
| Al2O3 | 95-97 | 95-97 | 95-97 |
| SiO2 | 3-5 | 3-5 | 3-5 |
| Trace | <0.5 | <0.5 | <0.5 |
| Property | Saffil 97 Felt |
| Classification Temperature | 1600°C |
| Melting Temperature | Application Dependant |
| Density | 160 kgs/m³ |
| Typical Chemical Analysis (wt. %) | |
| Al2O3 | 97 |
| SiO2 | 3 |
| Trace | <0.5 |
The Saffil 97 Range is used in extreme-temperature industrial processes where chemical stability, atmosphere resistance and thermal performance are critical.
Saffil 97 products are specified across industries requiring exceptional chemical stability and reliable performance in severe thermal environments.
Selecting the correct Saffil 97 product is essential for achieving optimum thermal efficiency, atmosphere resistance and long-term process reliability. Factors such as operating temperature, furnace atmosphere, chemical exposure and component design should all be considered during specification.
Our technical team provides support across insulation design, material selection and thermal performance optimisation, helping ensure the most suitable Saffil solution is specified for your application.
Speak with our technical specialists to discuss extreme temperature insulation requirements, hydrogen furnace applications and advanced thermal processing environments. We can assist with product selection, thermal calculations and application-specific specification guidance.
