Hardness - Import export

Sapphire is an incredibly hard crystal (HK1370kg/mm2), second only to diamond. Fluoresence free sapphire windows have high mechanical strength, thermal and chemical resistance and is scratch resistant, making it very desirable for operating in harsh conditions. Sapphire windows can be made thinner than alternative crystals thanks to its structural integrity and can operate up to 2030⁰C. The material transmits between the UV and IR at 0.15-5.5µm, and has a high refractive index of 1.75.. Knight Optical supply a range of quality Sapphire optical components including Fluoresence free sapphire windows, Sapphire lenses, Sapphire prisms, and Sapphire blanks either from stock or bespoke custom made to your specification for a range of applications.  Our current range includes Random Polarization Sapphire that can be used for most applications apart from UV use. Click link URL to read more …

Sapphire is an incredibly hard crystal (HK1370kg/mm2), second only to diamond. Fluoresence free sapphire windows have high mechanical strength, thermal and chemical resistance and is scratch resistant, making it very desirable for operating in harsh conditions. Sapphire windows can be made thinner than alternative crystals thanks to its structural integrity and can operate up to 2030⁰C. The material transmits between the UV and IR at 0.15-5.5µm, and has a high refractive index of 1.75.. Knight Optical supply a range of quality Sapphire optical components including Fluoresence free sapphire windows, Sapphire lenses, Sapphire prisms, and Sapphire blanks either from stock or bespoke custom made to your specification for a range of applications.  Our current range includes Random Polarization Sapphire that can be used for most applications apart from UV use. Click link URL to read more …

Alumina-Zirconia (ZTA) ceramic composites are unique ceramic materials by way of exhibiting a combination of high hardness, strength, wear and corrosion resistance characteristics to their alumina component while still maintaining reasonably high fracture toughness specific to its zirconia component.

Like oxides and nitrides, Silicon Carbide (SiC) is a very hard-wearing material, again requiring diamond-grinding methods to process once fired. Although not exclusively, carbides are used mainly for applications in which physical wear is a major consideration. They are amongst the hardest materials available.

Alumina is the more common name of aluminium oxide. It is a hard-wearing technical ceramic offering an excellent combination of both mechanical and electrical properties and is ideally suited to a wide range of industrial applications.

These Basalt Setts are the most durable Paving Blocks in natural stone types. They are also known as Cobblestones, Setts, and Split Face Cobblestones. We supply Paving Blocks such as Black Basalt which has a very attractive black colour that suits any project. Citadel Stone Ltd has exclusive access to some quarries and factories to source the best paving blocks for our customers. Basalt and Granite Setts are popular for their durability and low absorption rate. Our company adheres to ethical sourcing practices and ensures that the workers within our supply chains are treated with dignity and respect throughout their work. Citadel Stone Ltd ships Paving Blocs throughout the United Kingdom, Europe, and all over the world. We also provide expert pieces of advice for any projects on all aspects of Paving Stones. Whether you are looking for Patio Stones for your projects, our black basalt setts are the most popular and withstanding Stone Blocks in the natural stone in the world.

Metallurgical equipment all endure heavy-duty service under very demanding environmental conditions. Equipment is subjected to moisture, dirt, saw dust, wood chips, sap and tar and slamming loads. The hydraulic cylinders used on that equipment must meet these challenges day after day. Gidrolast has over 15 decades of experience building hydraulic cylinders for this tough industry. In fact, you could say we cut our teeth in the forestry industry. For our customers, that experience is invaluable. Gidrolast designs cylinders that are able to endure the difficult conditions that metallurgical machinery encounters on a daily basis.

SimplexHealth Total Hardness test strips are perfect to test the hardness of your water, to check the performance of your water softener, for service work, classroom demonstrations, or to give to customers instead of an expensive service call. This full range test kit lets you measure hardness on a very wide range of 0ppm to 1000ppm (mg/l). (ppm = parts per million)

At Good One we produce craft hard sodas that are all natural, low cal, gluten free, plastic free and vegan. A refreshing hard seltzer made with fresh and natural ingredients. No artificial or natural flavourings - just a real juice and hand-crafted botanicals carefully blended with alcohol base in small batches. Speaking of good stuff like this, every time your customers chug a good one down, trees get planted!