Vicat softening temperature. Other Material Properties. HDT test measures the temperature at which the specimen loses its load bearing capability. Apr 16, 2012 · The heat deflection temperature of the composite increases from 82 °C to 114 °C (increasing by 40% and close to the melting temperature) and the Vicat softening temperature increases from 96 °C to 109. 原 料. Vicat softening temperature. The most important measurement methods for determining the heat distortion resistance are the Vicat Softening Temperature VST (described by ISO 306) and the Heat Distortion Temperature HDT (described by ISO 75-1 to 75-3). 2 % is reached. [21]. 英 文 名 称：vicat softening temperature (VST) 维卡软化温度：当匀速升温时，某一负荷条件下，截面1 m㎡的标准压针刺入热塑性塑料1mm深时的温度。. Some polymers are capable of withstanding temperatures of 200°C or higher, while others One advantage of the Vicat softening point (VSP) test is that it can be carried out on small specimens. Some polymers are capable of withstanding temperatures of 200°C or higher, while others The Vicat Softening Temperature (VST) test, specified by the ISO 306 standard, measures polymers’ ability to retain their mechanical (in this case surface) properties at high temperatures. 5. L A plot of Vicat softening temperature vs. Jan 1, 1990 · The test is actually a measure of penetration--that is a measurement of a particular deformation under a constant load. Significance and Use 5. PVC 78 8o Determination of the PICA T softening temperature The VICAT softening temperature' is defined by the ASTM as the temperature at which a circular probe of 1. 82 Deg C: Water Absorption: 70 – 80 Deg C: Melting Temperature: 240 – 260 Deg C: Boiling Point > 350 Deg C . Dielectric Constant Heat deflection temperature (HDT) and Vicat softening temperature testing is critical to determining the quality and performance of polymers. 135～145℃. 3 o C; PVC: 92 o C; PE: 127. 25 Access 57 properties in Plastics. Purification of the samples : The samples were purified by dissolution in tetrahydrofuran (THF), precipitation with methanol and drying. During the test the temperature is raised at a uniform rate. The Vicat softening temperature is the temperature at which a flat-ended needle of 1 mm² circular cross-section Vicat softening temperature, rate B/120 ISO 306 °C 145 Temperature of deflection under load (type A), 1. It reveals the temperature at which the specimen loses its “stability-form” and softens. Vicat softening temperature* ISO 306 / A120 82. Shanghai Measurement and Testing 2: 29-31. 8 MPa, flat ISO 75-2 °C . The temperature at which the needle has penetrated to a depth of 1 6 0. Chlorinated polyvinyl chloride ( CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. 0 mm into a sample t 2. ビカット軟化温度（ビカット軟化点、Vicat Softening Temperature、VST） 加熱浴槽の中に規定された寸法の試験片を据え、中央部に一定の断面積（JIS K7206では1mm 2 ）の端面を押し当てた状態で浴槽の温度を上昇させる。試験片に端面は一定の深さまで食い込んだ時の The ASTM D1525 Vicat Softening Temperature (VST) test gauges the ability of a plastic product to retain its surface mechanical properties at high temperatures. The upper-temperature limit for filled or unfilled amorphous polymers can also be found by looking at HDT or DTUL. The Vicat Softening Temperature is an important measure of thermoplastic material behavior when exposed to heat. ISO 306:2013 specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: method A50 using a force of 10 N and a heating rate of 50 K/h; method B50 using a force of 50 N and a heating rate of 50 K/h; method A120 using a force of 10 N and a heating rate of 120 K/h; 1. ISO 306:2004 specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: This document specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: The ASTM D1525 Vicat Softening Temperature (VST) test gauges the ability of a plastic product to retain its surface mechanical properties at high temperatures. Dec 1, 2006 · Vicat softening temperatures: Vicat softening temperatures were measured at 50 °C/h using a Davenport type 692-52 apparatus according to ISO 75. ABS: 102. The temperature at 1 mm penetration is quoted as the Vicat softening temperature (VST) in Celsius degrees. Vicat Softening Temperature - is the temperature where a needle shaped penetrator sinks into a test piece a specified depth when a specified vertical load (1 kg) is applied. Traducción de "vicat softening temperature" en español. The Vicat Softening Temperature (VST) test, specified by the ISO 306 standard, measures polymers’ ability to retain their mechanical (in this case surface) properties at high temperatures. com. Table 3. Feb 5, 2015 · The Vicat softening temperature was measured as the temperature at which a flat-ended needle penetrated the specimen to the depth of 1 mm under a specific load. 21 W/m·K (1. Locati TABLE 1 Vicat A Values of the Materials ASTM Standard D1525:1 kg, 50 /h. Dec 11, 2022 · The temperature at which the needle has penetrated to a depth of 1 6 0. 3 o C; PP: 152. 8 in/in-F: Melting Point: 255 - 268 F: 130C: Vicat Softening Point: 226 - 264 F: 120C: Brittleness Temperature Feb 18, 2011 · Linear Low-Density Polyethylene Softening Point and Endothermic Curve Profile Correlation: DSC Technique Vicat C) EB-k1 0. It was therefore of interest to establish correlations between VSP values and test results by ASTM Method D 648 and B. Uses include hot and cold water delivery pipes and industrial liquid handling. The test method for determining the Vicat Softening Point of plastics is described in the international Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test method Feb 17, 2024 · Introduction to ISO 306. The viscometry method and DSC find that the two polymers are Vicat Softening Point ASTM D 1238 @ 190°C, 5. As the volume and range of plastic and composite materials continue to expand, laboratories across Quality Control (QC) and Research & Development (R&D) are coming under added pressure. 0 g/cm 3 58 to 60 lb/ft 3. 0. 45 to 80 °C 110 to 180 °F. Compare the differences, standards and applications of these thermal analysis techniques. Deflection Temperature at 1. Properties Test Method Typical Value. 4 °C Melting temperature ISO 11357 (DSC, 10 °C / min) – (amorphous) Thermal shrinkage – – Coefficient of thermal expansion– – Other properties Specific gravity ISO 1183 1. In this video we are discussing about Vicat Softening Temperature step by step 1. Laboratories are under Nozzle temperature: 235-255°C Bed temperature: 100°C Recommended printing speed: 30-150 mm/s Recommended shell thickness: 0. 4 °C Nov 12, 2021 · The Vicat softening temperature of the composites rose with the increase in the drawing speed, and the Vicat softening temperature of the drawn PP/Talc composites was slightly higher than that of the PP/CaCO 3 composites. 30mm Active cooling fan: 0-25% Heated chamber: recommended for larger prints Dry box recommended: no Ruby or hardened nozzle recommended: no Adhesive: May 2, 2019 · The Vicat softening temperature was identified with the glass transition temperature, and its decrease accounted for the decrease in the Vicat point value. A The vicat softening temperature (VSP) test is a standard test (ASTM D1525 and ISO 306) used to assess the temperature at which a needle of specified dimensions penetrates into plastic specimen a specified distance under a given load. ビカット軟化温度を測定するメリットは、試験片の入手がしやすいことです。. Jan 1, 1993 · The comparison of the ~s by DSC to the Vicar temperatures of three blends, miscible, immiscible and partially miscible, allows us to interpret the different Vicat softening temperature-blend composition plots obtained and to be informed on the phase behaviour of the blends. 83 °C 180 °F. Tests Related to ASTM D1525 Important tests relevant to ASTM D1525 include ASTM D618 for Conditioning Plastics for Testing, ASTM D883 (Terminology Relating to Plastics), and ASTM D1898 1 Chongqing Academy of Metrology and Quality Inspection, Chongqing, 401123, China *Corresponding author’s e-mail: 755245093@qq. The temperature reflects the point of softening to be expected when a material is used in an elevated temperature application. 8 shows a summary of available data of Vicat softening temperatures and heat distortion temperatures for different thermoplastic materials and resins. 05 - 0. 6E-005 in/in/ºF ASTM D696 Drying Temperature 180 to 200º F Melting Point, (VS=Vicat Softening Temp. Limitations: Method A50 using a force of 10 N and a heating rate of 50° C/h. A number in parentheses indicates the year of last reapproval. However, the initial test temperature is difficult to control, which may reduce the testing efficiency and the precision of VST. It is defined as the temperature at which a flat-ended needle with a specified load penetrates the surface of the plastic to a specified depth. We would like to show you a description here but the site won’t allow us. The temperature is recorded. 3 25 952 132 127 Tensile Strength at Yield Elongation at Break Young Modulus Flexural Modulus Charpy Impact Strength Heat Deflection Temperature Vicat Softening Temperature ESCR, Cond. The common ASTM test here is ASTM D1525 and ISO 306. 该温度反映了当一种材料在升温装置中使用时期望的软化点。. Namhata, L. Yu et al. 7 mm thick. In accordance with GB/T 1633, three specimens were tested, and the final average value of the VST difference was less than 2 °C, to ensure the reliability of the data. The Vicat softening point is the temperature at which a flat-pointed needle penetrates the sample to a thickness of 1 mm when loaded with a 10 N or 50 N load. P. The load used is often ION (Vicat A) or SON (Vicat B) and must be indicated with the results. Also known as Vicat Needle test, the VST is becoming increasingly important as plastics continue to replace more traditional materials in all manner of Aug 1, 2023 · Fu, K, et al. 9 ± 0. 40 - 2. Traditional HDT Vicat test methods use silicon oil as the heating medium, but silicon oil has a high-temperature limit of 300°C. 1 This International Standard specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: — Method A50 using a force of and a heating rate of The heat distortion temperature is the temperature at which a piece of PVC, placed in the heat medium with a bending load applied onto it, reaches a specified deflection as temperature rises. 工程塑料 、 通用塑料. Heat distortion and Vicat softening temperature apparatus are mainly used for measuring the thermal deformation temperature and Vicat softening point temperature of non-metallic materials. 荷重たわみ温度を測定する場合は、80mm×10mm×4mmの短冊状の試験片が必要ですが、ビカット軟化温度の場合は、「一辺が10mm以上の正方 The vicat test is used to identify a temperature at which a needle of specified dimensions penetrates a plastic specimen at a specified distance under a given load. 2) using a selected uniform rate of temperature rise Note 1 to entry: It is expressed in degrees Celsius (°C). (2016) On-line calibration method for temperature parameters of thermal deformation and vicat softening point temperature tester [J]. 0 mm2 cross-section, under load of 1000 gm, penetrates 1. S. Sep 22, 2023 · The temperature at which the indenter was pressed into the sample 1 mm thickness was recorded as the Vicat softening temperature (VST). 8MPa 74. 3. 8 °C Heat deflection temperature ISO 75 0. For each formulation, pairs of samples were tested until the Vicat softening temperatures of the two samples did not differ by more than 2 °C. For example, for unfilled polycarbonate the HDT values range between 130–140°C depending upon the grade. Some polymers are capable of withstanding temperatures of 200°C or higher, while others Die gemessene Temperatur wird als Vicat Softening Temperature VST bezeichnet. Für die Prüfung werden quadratische (Grundfläche 10 x 10 mm 2) oder runde (Mindestdurchmesser 10 mm) Prüfkörper mit einer Dicke von 3 mm bis 6,5 mm verwendet. 2 This test method is useful in the areas of quality control, Vicat Softening Temp. Fluidized beds can reach higher temperatures than traditional liquid-filled heating baths; therefore, they represent a suitable way to measure the Vicat softening temperature (VST) of thermoplastic materials having improved thermo-mechanical properties. Nhiệt độ này được đo khi mẫu thử bị chảy 1 mm chiều dài dưới tác dụng của một mũi nhọn có diện tích 1 mm² với đầu tác dụng là hình tròn On the other hand, softening though it is taken as an arbitrary value via Vicat and/or indentation tests, generally softening took place over a wide range of temperatures. 0 mm2 cross-section, under a load of 1000 g, penetrates 1. Vicat softening points, where provided, are a few degrees higher. CTE, linear 20°C: 77. 4 Principle Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST) 1Scope 1. Signi cance and Use 5. 4 °C Glass transition ISO 11357 (DSC, 10 °C / min) 77. Standard 4. Processing. In the test, the sample is placed in an oil bath that is heated at a rate of 50 °C/h or 120 °C/h, and the needle is placed on the surface of the sample. PC. Also known as Vicat Needle test, the VST is becoming increasingly important as plastics continue to replace more traditional materials in all manner of Heat Deflection Temperature (HDT) and Vicat Softening Temperature (Vicat) testing is key to validating the quality and performance of polymers, now more than ever. Definition 2. Viscosity Range of PET This can be divided into Vicat softening temperature and HDT (heat deflection temperature). Vicat softening temperature to ISO 306 and ASTM D1525 (VST: Vicat softening temperature) Vicat softening temperature（简称VST）—— 工程塑料 、 通用塑料 等聚合物的试样于液体 传热 介质中，在一定的载荷、一定的等速升温条件下，被1m㎡的压针压入1mm深度时的温度。. procedure 5. In both methods an oil-bath is heated at a defined rate and the temperature is recorded at a deflection or indentation depth specified by the standard. 70mm Recommended layer height: 0. Learn how to measure the softening and deflection points of paints and polymer coatings using Vicat and HDT testing methods. As automotive components become increasingly lighter, there is a growing demand for high-performance polymers, which must undergo a thorough HDT and Vicat apparatus test process. 120～130℃. 0 mm into a sample 12. 测 试 标 准：ASTM D1525, ISO 306 Jul 4, 2023 · There is no relevant calibration specification or method for heat distortion and Vicat softening temperature apparatus in China. 01 mm is recorded as the Vicat softening temperature. 80 MPa °C ISO 75-1,-2 126 C Temperature of deflection under load 0. Plastics - Thermoplastic Materials - Determination of Vicat Softening Temperature. B, F 50 ASTM D 638 Aug 1, 1972 · PVC 73 73 Service Temp. The Vicat softening temperature is essential for material selection, process optimization, and quality control in industries utilizing plastic materials. 8 MPa (264 psi), ISO 75/Af, Flatw 80*10*4 sp=64mm Deflection Temperature at 1. 82 MPa (264 psi) 69 °C 160 °F. 917 0. In this case, a needle of a specific area is placed on the sample and one of two loads is applied while the temperature of the specimen is increased Vicat softening temperature (VST) is one of the most important parameters to evaluate heat resistance of thermoplastic materials. 6. The vicat softening temperature can be used to compare the heat-softening characteristics of different materials. 维卡软化点. The exact value is only meaningful for comparison purposes (comparing two materials or quality control of different material batches). This was because the molecular chains of the PP composite material were highly oriented with the increase in the drawing The Vicat Softening Temperature (VST) test, specified by the ISO 306 standard, measures polymers’ ability to retain their mechanical (in this case surface) properties at high temperatures. This temperature is not high enough to test new families of materials known as techno-polymers, which have HDT values of up to 500°C. 中文名. Die Oberflächen müssen eben und parallel sowie gratfrei sein. Also known as Vicat Needle test, the VST is becoming increasingly important as plastics continue to replace more traditional materials in all manner of Also storage moduli, and vicat softening temperature increases slightly by addition of the fiber see Fig. Methyl silicone was used in an oil bath at a heating rate of 120 °C h −1 and a specific load of 10 N. Significance 3. Also known as Vicat Needle test, the VST is becoming increasingly important as plastics continue to replace more traditional materials in all manner of . Compared with the Heat Deflection Temperature (HDT), Vicat softening temperature test measures the temperature at which the specimen loses its stiffness and softens. The newly developed Instron CEAST AlOxide® thermal tester determines the Vicat softening temperature and HDT heat deflection temperature of plastics at temperatures up to 500 °C, allowing measurements to be conducted even on highly temperature resistant thermoplastics such as PEEK. temperatures used in the EB-k1 sample fractionat ion were Vicat: The Vicat softening temperature is the temperature at which a flat-ended needle penetrates the specimen to the depth of 1 mm under a 10N or 50N load. The accompanying photo provides a picture of this test apparatus, as well. 70°C (158°F) 64°C (147°F) Vicat Softening Temperature D 1525 85°C (185°F) Thermal Conductivity C 177 0. Abstract. Some polymers are capable of withstanding temperatures of 200°C or higher, while others Vicat Softening Temperature (VST) - ASTM D 1525 (ISO 306) This test measures the temperature at which a plastic starts to soften rapidly. 6 MPa) Elongation at break: 50%: 790%: Biocompatibility: May be suitable for remaining in the body as long as 30 days: Sterilization: Dry heat Ethylene oxide (EtO) Gamma radiation Steam : Trade Names: Aesno Besno Nylon 6 Nylon 6,6 Nylon 12 The Vicat softening temperature is the temperature at which a flat-ended needle penetrates the specimen to the depth of 1 mm under a specific load. [85] studied the effects of fiber surface-treatments on the properties of PLA Dec 1, 2006 · The results show that the plot of Vicat temperature against composition is a continuous curve, indicating the miscibility of the blend. The samples are lowered into a silicone bath and tested until the end deflection is occurred. ) D3418: 621: F: Continuous Service Temperature in Air, (Max. Find specific processing information for Lupoy® PC and Alloys as well as general information for the Polycarbonate + ASA generic family. 2 o C Feb 24, 2022 · The test specification for the Vicat softening temperature testing is ASTM D1525 and ISO 306. Create your free account or sign into Prospector. CPVC, like PVC, is deemed safe for the transport and use of Vicat softening point of plastics. and Impact Mod. Density. glass transition temperature of many 3D printing materials is shown below in Figure 1 [4,13,[15][16][17][18][19][20]. Vicat Softening Temperature – ISO 306 The temperature at which a 1mm2 flat-ended needle will penetrate 1mm into a material under a specified load and heating rate. Min. 5 Btu·in. So the Vicat softening temperature is a temperature at which a particular prefixed 78 S. The The heat distortion temperature (HDT) is the temperature T HD (in C), at which a peripheral fiber strain of 0. Santolini, G. 6kg ASTM D 1505 ISO 3146 ISO 306 g/10min g/10min kg/m³ °C °C 1. 93 to 1. 1 This document specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials: Method A50 using a force of 10 N and a heating rate of 50 °C/h; Method B50 using a force of 50 N and a heating rate of 50 °C/h; The ASTM D1525 Vicat Softening Temperature (VST) test gauges the ability of a plastic product to retain its surface mechanical properties at high temperatures. Materiales higher temperatures than traditional liquid-filled heating baths; therefore, they represent a suitable way to measure the Vicat softening temperature (VST) of thermoplastic materials having improved thermo-mechanical properties. By substituting this information into the penetration equation, the Young’s Modulus at the VICAT Softening Temperature The Vicat Softening Temperature (VST) test, specified by the ISO 306 standard, measures polymers’ ability to retain their mechanical (in this case surface) properties at high temperatures. 外文名. Oct 17, 2017 · 90～100℃. 中 文 名 称：维卡软化点. This improvement mainly stems from the increase in the modulus as well as the interaction between Basic Description: The bars are placed under the deflection machine a specified load and ramp rate. 1. The ASTM D1525 Vicat Softening Temperature (VST) test gauges the ability of a plastic product to retain its surface mechanical properties at high temperatures. It was also felt necessary to add — precision data based on round robin testing performed in 2009, and Oct 26, 2015 · The Vicat softening test also has some built-in latitude that can make an interpretation of the data somewhat challenging. This article presents a novel calibration method by determining corresponding environmental conditions, calibration standards, and calculation equations. 1 INTRODUCTION One of the most important contemporary ways in the Vicat softening temperature VST temperature at which a flat-ended indenter will penetrate the specimen to a depth of 1 mm under a specified load (3. Electrical Properties. Nov 15, 2013 · This International Standard specifies four methods for the determination of the Vicat softening temperature (VST) of thermoplastic materials:- method A50 using a force of 10 N and a heating rate of 50 K/h;- method B50 using a force of 50 N and a heating rate of 50 K/h;- method A120 using a force of 10 N and a heating rate of 120 K/h; Thermal Properties. )-500: F: Thermal Conductivity-1. 127 . 82 MPa (264 psi) D 648 D 648. For both methods, a specimen is heated to a defined, constant heating rate under a defined, constant load. Applicati May 30, 2020 · Heat Deflection Temperature At 1. Indeed, the Vicat softening temperature of PP matrix is around 90-118°C [24, 25]. 1 Data obtained by this test method is used to compare the heat-softening qualities of thermoplastic materials. The vicat point is closer to the actual melting or softening point of the polymer. The tests also involved the determination of the melt flow rate of produced nanocomposites. Deflection Temperature @ 0. 142～146℃. 1 °C with increasing fiber-mass proportion. 7: BTU-in/hr-ft2-F: Electric Sep 19, 2019 · The Vicat softening temperature (VST) of the non-annealed and annealed samples was determined using a Vicat softening temperature tester (CEAST VIC/01, Pianezza, Italy) per ISO306:1994. Vicat Softening Temperature. Vicat Softening Point (Rate B) 224 ºF ASTM D1525 CLTE, Flow (-40 to 100º F) 5. Vicat Softening Temperature of Plastics1 This standard is issued under the fixed designation D1525; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Dielectric Constant (Relative VICAT Softening Temperature The VICAT softening temperature is defined by ASTM (3) as the temperature at which a circular probe of 1. 1 Vicat softening temperature—the temperature at which a flat-ended needle of 1-mm2circular cross section will penetrate a thermoplastic specimen to a depth of 1 mm under a specified load using a selected uniform rate of temperature rise. The temperature at which a thermoplastic material reaches a specific degree of softness, as measured by a standardized indentation test. 45MPa 78. The Vicat softening temperature is defined as the temperature where the needle shaped penetrator sinks into the test piece to a specified depth. Jun 5, 2023 · The Vicat Softening Point is a measure of the softening temperature of a plastic material. A round, flat-ended needle of 1 mm2 cross section is placed on the surface of the test specimen under load and the temperature is raised at a uniform rate. The Vicat Softening Temperature (VST) is the temperature at which the penetration reaches 1 mm. ISO 306 establishes a standardized method for measuring this temperature, ensuring consistency and dependability in assessing thermoplastic materials across many industries. 8 MPa (264 psi), ASTM D648, unannealed Vicat Softening Point, ISO 306, Rate B/50 C Temperature of deflection under load 1. 0kg ASTM D 1238 @ 190°C, 21. Nhiệt độ hóa mềm Vicat là điểm hóa mềm của một số chất dẻo (như Polyetylen), nhưng không phải là nhiệt độ nóng chảy. The heat deflection temperature and Vicat softening temperature are characteristic values, which under comparable conditions, provide an indication of the maximum service temperature of a plastic. Thermoplastics, in particular, increasingly lose their stiffness and hardness at higher temperatures. May 27, 2022 · Testing high-performance materials at high HDT and Vicat softening temperatures. Method B50 using a force of 50 N and a May 30, 2020 · Vicat Softening Temperature. The Vicat softening temperature of a thermo-set component shall be above 70 ºC. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. 27 g / cm³ Flame classification – – Notes Determination of the temperature at which a standard indenter penetrates 1 mm into the surface of a plastics test specimen under one of the loads given in 1. Unlike conventional instruments, which use silicone oil as Vicat Softening Point: 140°F (60°C) 482°F (250°C) Tensile strength: 2180 psi (15 MPa) 13000 psi (89. /h·ft2·°F ) Glass Transition Temperature (Tg) DSC 80°C (176°F) Specific Glass transition temperature DSC, 10°C/min 81 °C Melting temperature DSC, 10°C/min N/A Crystallization temperature DSC, 10°C/min N/A Decomposition temperature TGA, 20°C/min N/A Vicat softening temperature ISO 306, GB/T 1633 84 °C Heat deflection temperature ISO 75 1. 45 MPa °C ISO 75-1,-2 134 C Vicat softening temperature 50 N; 50 °C/h °C ISO 306 132 Vicat softening temperature 50 N; 120 °C/h °C ISO 306 134 C Coefficient of linear thermal expansion, parallel 23 to 55 °C 10-4/K ISO 11359-1,-2 0. La temperatura de reblandecimiento Vicat de un componente termoendurecido deberá ser superior a 70 ºC. 1 Data obtained by this test method may be The Vicat softening temperature is the temperature at which a standard deflection occurs for defined test samples subjected to a given linear temperature increase and a compression loading from a defined indenter of a specified weight. 455 MPa (66 psi) @ 1. The high temperature mechanical properties of plastics can limit their widespread application. 2782 Method 102-C (softening test on cantilever specimens) for a range of thermoplastics. Picture 6. Also called Vicat hardness or Vicat softening point. ch qz bj je qp bu je cf uc jh