Divinycell HCP - DIAB - #1

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E HCP Divinycell HCP grade has been developed to meet the demand for a high-performance, lightweight buoyance material with excellent characteristics. It is widely used in floatation units, ROVs, diving bells and impact protection structures. As a result of its excellent hydraulic compressive properties and closed cell structure, it has very low buoyancy loss and water absorption under long-term loading conditions. The insulation properties of HCP are excellent. HCP stands for Hydraulic Crush Point indicating the most important feature of this class of materials. HCP is defined as the point of pressure in Bar, where the material when subjected to an increasing pressure of 1-2 Bar/sec has lost 5% of its initial volume. The design of subsea buoyancy applications is complex and consideration has to be given to the required buoyancy loss and updrift over the expected lifetime and service conditions, with respect to long and short term hydraulic compressive creep, water absorption and hydraulic fatigue. Please contact DIAB Technical Services for design proposal. www.diabgroup.com Technical Data for Divinycell HCP Grade Technical Data Property Hydraulic Crush Point Test procedure Unit Bar HCP 30 30-39 HCP 50 50-59 HCP 70 70-79 HCP 90 90-99 HCP 100 100-109 Density, nominal 1) ISO 845 kg/m3 200 250 300 360 400 Compressive Strength 2) ASTM D 1621 MPa 5.4 7.2 8.1 10.2 11.6 E-modulus (extensometer) 2) ASTM D 1621 MPa 310 400 500 590 650 Tensile Strength 2) ASTM D 1623 MPa 7.1 9.2 11.0 12.6 13.5 Shear Strength ASTM C 273 MPa 3.5 4.5 5.2 6.5 7.3 Shear Modulus ASTM C 273 MPa 73 97 115 147 170 Shear Strain ASTM C 273 % 45 45 35 35 35 Thermal Conductivity EN 12667 W/m.K 0.049 0.051 0.057 0.058 0.060 Buoyancy Contact DIAB Technical Services for design case calcuation 1) Typical density variation ± 10%. 2) Perpendicular to the plane. All values measured at +23°C. Operating temperature is -200 to +80°C. Normally Divinycell HCP can be processed up to 90°C without dimensional changes. Maximum processing temperature is dependent on time, pressure and processing conditions. Therefore users are advised to contact DIAB Technical Services to confirm that Divinycell HCP is compatible with their particular processing parameters. Coefficient of linear expansion: Approx. 37 x 10-6/°C All content in this publication is protected by International Copyright Laws. Copyright © DIAB November 2010 HCP-ds/11_2010.rev.7 This data sheet may be subject to revision and changes due to development and changes of the material. The data is derived from tests and experience. The data is average data and should be treated as such. Calculations should be verified by actual tests. The data is furnished without liability for the company and does not constitute a warranty or representation in respect of the material or its use. The company reserves the right to release new data sheets in replacement.