Sponsored Links ASTM D792 The specific gravity of a substance is a comparison of its density to that of water. The tests for density and SG are particularly significant in the custom sheet industry because plastic sheet is sold on a cost per pound basis. CONSTITUTION: An isotactic polyolefin powder or particle of an average particle 0000042285 00000 n Copyright 2000 - 2023 United States Plastic Corporation. HGCs are far more dense than existing plasticse.g., 40% glass-filled nylon has a specific gravity (SG) of just 1.46and are weighty enough to compare with aluminum (2.7 SG), zinc (6.64), steel (7.6), and lead-antimony (11.35). 0000172297 00000 n Threads & Torque Calcs PVC 1.37-1.39 These Thermo Scientific Nalgene bottles are lightweight versions of lab-quality bottles and can perform light-duty, general purpose work. Bad0Ai2qe5a>/=Amk.uB^Hfd]hG!+lqqTDlz!" 0000127802 00000 n ?b0/7>41"FUm'V69mjqQn[pd@,XrKC^k $e-eI]abs6QCoq$Y+4Gb=.bsm?JBny!Q.h38'!xSi{C ,*+R9hHz This may also be referred to as relative density. Hi! Viscosity Chart. Thermodynamics 6, Sec. Specific gravity, generally speaking, measures the density of an object as compared to water. Web800.789.1718. 0000002356 00000 n With superior resistance to discoloration, impact, and chemicals, acrylic plexiglass sheet is ideal for any application. Animals do not recognize it as artificial and may mistake it for food causing serious effects on the health of birds or marine animals that might swallow it. Acrylic doesn't have as much impact resistance as polycarbonate; polycarbonate's tensile strength is greater than that of PVC; PVC's heat deflection abilities are lesser than Vivak's; and so on, and so on. 0000004927 00000 n 0000162752 00000 n One of the most remarkable features of plastic is just how greatly its features can vary from variety to variety. In fact, PET bottles arethe most widelyrecycled plasticin the world! First, we have to know that the formula of density is: As formula shown, density is total mass of the object divided by total volume of object, which means: 1 gram per cubic centimetre or 1 kilogram per cubic metre.Density of water is1 gram per cubic centimeter (1 g/cm3), but actually, the exact density of water is not really 1 g/cm3, but rather a bit less (very, very little less) than 1, so we can say thatgenerally the weight and volume of water is the same.What's the meaning of "Specific Gravity"?Specific Gravity means specific value of an object undernormal temperature and pressure. Should reactivate cookies? If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. In this next blog series we will explore ASTM tests commonly found on material data sheets for thermoplastic resins, starting with density and specific gravity. Engineering Standards or in connection with, the use of this information. Friction Formulas Apps This test is often seen with the designation ASTM D792. All rights reservedDisclaimer | Though that may seem like a simple and not particularly worthwhile distinction, any engineer worth their salt will tell you that weight is of the utmost importance when deciding whether a material is appropriate for a particular project. LDPE 0.91-0.93 Other custom sizes of trays, special partitions, flanges, outlets, etc. But they can also be found on mobile phones and, more frequently, in compact-discs (CD). 0000006323 00000 n Specific Gravity In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss 0000132332 00000 n 0000176664 00000 n Note: Both densities need to be in the same unit as they will cancel each other and produce SG. Specific gravity and density are especially relevant because plastic is sold on a cost per pound basis and a lower density or specific 0000050964 00000 n Heat Transfer At Plastics For Change, we are giving second life to discarded plastic numbers 1,2,4, and 5 and re-use them for the creation of various different products while cleaning our oceans! Web most plastic baby bottles 5-gallon water bottles sport water bottles metal food can liners clear plastic sippy cups some clear plastic cutlery Mixed resin plastics like #7 are difficult, if not impossible, to recycle. **Ji-Horng Plastic is a leading plastic injection molding manufacturer since 1986, for more information, please contact us!**. To figure the specific gravity of a substance take the number of pounds per gallon the substance weighs and divide it by 8. Feedback Advertising Welding Stress Calculations 0000149962 00000 n 0000004768 00000 n Plastics that belong to group number one are made out ofpolyethylene terephthalate or PET. 0000167357 00000 n +74|=8/[ dcepJ@@ Q endstream endobj 8 0 obj<> endobj 10 0 obj<> endobj 11 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>> endobj 12 0 obj[278 750 474 750 750 750 750 238 750 750 750 750 278 750 278 278 556 556 556 556 556 750 750 750 556 750 750 750 750 750 750 611 750 722 750 722 722 667 611 778 722 278 750 750 750 750 722 778 667 750 722 667 611 750 667 944 750 667 750 750 750 750 750 750 750 556 611 556 750 556 333 611 750 278 750 750 278 750 611 611 611 750 389 556 333 611 556 750 556 556] endobj 13 0 obj<> endobj 14 0 obj<> endobj 15 0 obj<> endobj 16 0 obj<> endobj 17 0 obj<> endobj 18 0 obj[/ICCBased 39 0 R] endobj 19 0 obj[278 750 355 750 750 750 750 191 333 333 389 750 278 333 278 278 556 556 556 556 556 556 556 556 556 556 278 750 750 584 750 556 750 667 667 722 722 667 611 750 722 278 750 667 556 833 722 778 667 750 722 667 611 722 667 944 750 750 750 750 750 750 750 750 750 556 556 500 556 556 278 556 556 222 222 500 222 833 556 556 556 556 333 500 278 556 500 722 500 500] endobj 20 0 obj<> endobj 21 0 obj<> endobj 22 0 obj[278 750 750 750 750 750 750 750 333 333 750 750 750 750 278 278 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 722 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 556 750 500 556 556 278 556 556 222 750 750 222 833 556 556 556 750 333 500 278 556 500 750 750 500] endobj 23 0 obj[250 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 500 500 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 667 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 722 778 778 778 778 778 778 778 444 500 444 500 444 778 778 778 278 778 778 278 778 500 500 778 778 333 389 278 778 500] endobj 24 0 obj<> endobj 25 0 obj<> endobj 26 0 obj<>stream Polytetrafluorethylene 2.27, Working Days & hours Details for Alfa Plast Mould, Alfa Plast Mould 2008 | All Rights Reserved. Economics Engineering Thanks to its versatile properties, such as lightness, durability, and easiness of processability, PVC is now replacing traditional building materials like wood, metal, concrete, rubber, ceramics, etc. For PS the melt density is 0.945 g/cm 3 and for PP it is about 0.74 g/cm 3. Join our movement of Global Change Agents to receive exclusive invitations and updates. Polystyrene is the sixth type of plastic on the list and it can be solid or foamed. 0000138434 00000 n AddThis use cookies for handling links to social media. Hydraulics Pneumatics 0000126937 00000 n 0000131261 00000 n 0000005127 00000 n Specially designed for marine applications, antiskid HDPE sheeting offers superior durability with the additional benefit of a non-skid surface perfect for high-traffic marine surfaces. Beverage bottles are among the main plastic items that come for PET. 0000002775 00000 n HWM7W=T+[h#E\Zc"YLGr>ZH 0000163869 00000 n the molded piece as compared to the weight of an equal volume of water WebDensity of Plastics Material: Technical Properties Table. Also, it is relatively hard and resistant to impact and can be subjected to temperatures of up to 120 C without being affected. Since then, after undergoing some minor variations, the RIC has been recognized as the worldwide standard plastic classification. Manufacturing Processes 0000007137 00000 n Polyethylene terephtalate 1.34-1.39 How about an incentive to share this post? Total elongation at failure of some polymers: Tensile modulus or Young's Modulus is the ratio of stress to strain within the elastic region of the stress-strain curve before the yield point. Mass Versus 0000170169 00000 n 0000018128 00000 n Despite its many advantages and efforts made by the plastic industry to increase its reusability, PVC is still hardly recyclable and should therefore be avoided, whenever possible. Plastics Synthetics 0000166558 00000 n Hardware, Imperial, Inch I'm Gelson Luz, mechanical engineer, welding specialist and passionate about: I am building this blog to be the best learning blog about engineering! Cookies are only used in the browser to improve user experience. There are two basic test procedures to determine the density of a material method A, used for testing solid plastics in water, and method B, used for testing solid plastics in a liquid other than water. Phone: 860-963-1976 Since the density of a fluid varies with temperature, specific gravities must be determined and specified at particular temperatures. 0000165724 00000 n Polypropylene 0.90-0.92 0000005721 00000 n Google use cookies for serving our ads and handling visitor statistics. Engineering Mathematics ), Copyright 2000 - When the plastic that expanded beyond the container is removed we now find that the remaining cube of heated plastic inside the container weighs only 0.933 grams. Thermodynamics Directory | Heat Transfer Directory, Specific Gravity Table Chart and Equation. SPECIFIC GRAVITY- The ratio of the weight of the molded piece as compared to the weight of an equal volume of water ASTM D792. 0000012608 00000 n 0000147303 00000 n 0000008409 00000 n In the next blog post, we will explain which of these plastic types can be recycled and which not, so stick around! 0000144583 00000 n 0000137613 00000 n 0000015222 00000 n 0000125957 00000 n Strength of Materials So youve narrowed down what material you need thanks to our Learn More About your Plastic Sheet series - now its time to download a data sheet and take a look at the performance attributes of our materials. Learn More, Formally confirming that your products and services meet all trusted external and internal standards. Over 12,000 ASTM standards operate globally, including tests specific to plastics, to help consumers have confidence that the products they purchase will perform as expected. warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with 0000145640 00000 n Therefore, the specific gravity is a unitless number. Structural Shapes Continue reading to learn more! 0000161897 00000 n Second, polystyrene foam blows in the wind and floats on water, due to its low specific gravity. These applications will - due to browser restrictions - send data between your browser and our server. 1 cm3 water weighs 1 g (as mentioned, density of water is 1g/cm3), and 1cm3 aluminum weighs 2.7 g (the density is 2.7 g/cm3), thus specific gravity of aluminum is 2.7 1 = 2.7 (which has the same value with density), **Tip: To look it up efficiently, mobile phone viewer, please use site searching, computer viewer, please use "Ctrl + F"**, Remarks: Glass Fiber (GF), Carbon Fiber (CF), Mineral Fiber (MF), Impact Modified (IM), Low Friction (LF), Talc Filled (TF), Ultra High Molecular Weight Polyethylene (UHMWPE), Crosslinked Polyethylene (XLPE), Density of Chemical Additives forInjection Molding. We don't save this data. Engineering Forum Physics WebThough some manufacturers use grams per cubic centimeter to indicate the weight of their products, others merely provide the specific gravity of their material. Polysulphone 1.24 If you are interested in knowing more about what we do, click here. Polyacronitrile 1.17 0000117111 00000 n Ethylene-propylene 0.86 Sg = Specific Gravity of the substance Learn More, Density and Specific Gravity ASTM D792, ISO 1183, K-SHOW:Visit us at K2022: Supporting Polymers and Materials Development, NEW SERVICE:CircularAssure - Services to help you close the loop in the circular economy for plastics, ARTICLE:Processability and evaluation programmes for recycled plastic materials, ARTICLE:Adhesives Quality Assurance Testing Programs, ARTICLE:Enabling Polymer Non-Wovens Development, CASE STUDY:Polymer Surface Contamination Resolution, CASE STUDY:Polymer Failure - Distribution and Dispersion of Fillers, Ensuring the Safety and Performance of Electrical Products, Testlopedia - The Plastics Testing Encyclopedia, Plastics Circular Economy Solutions - CircularAssure, Physical and Mechanical Testing of Polymers, Thermal Analysis of Polymers and Plastics, Polymer Regulatory and Consulting Services, Polymer Product Processing Development Support, Microbeads and Microplastics Testing and Consultancy, Coatings and Thin Films Analysis and Testing, Supporting Polymers and Materials Development, Processability and evaluation programmes for recycled plastic materials, Adhesives Quality Assurance Testing Programs, Polymer Failure - Distribution and Dispersion of Fillers. Vibration Engineering Because of this difference, when comparing polypropylene sheet to PET sheet, holding constant gauge and size, customers can see approximately a 30% density reduction from PET to PP and an increased yield on pounds purchased. That value must be known in order to determine the overall weight of said project and whether its other components will be able to support the heft of the plastic component - which is why we've put together this quick and easy guide on the weights of some of our most popular plastics. With a smooth, matte finish, expanded PVC sheets provide the great surface for graphic overlays.

, Sign up for A&C Plastics Updates, Promotions. The purpose was to provide a consistent national system to facilitate recycling of post-consumer plastics." Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Our network of more than 1,000 laboratories and offices in more than 100 countries, delivers innovative and bespoke Assurance, Testing, Inspection and Certification solutions for our customers' operations and supply chains. 0000011164 00000 n You can target the Engineering ToolBox by using AdWords Managed Placements. S g = p s /p h20 S g = Specific Gravity of the 0000154762 00000 n 0000171239 00000 n 0000019679 00000 n 0000151915 00000 n ), Plastic Material: Density & Specific Gravity. 0000157774 00000 n Polycarbonate 1.2 Minerals and other Materials - Specific Gravities Specific gravities for minerals and other materials. 0000168199 00000 n More frequently, however, anything over 1.53 is called high-index. Fluids Flow Engineering 0000016671 00000 n Hardware, Metric, ISO The specific gravity of a substance is a comparison of its density to that of water. HVAC Systems Calcs We don't collect information from our users. Available in a range of sizes these trays have many industrial uses. General Fax: 860-963-1998, Understanding Your Data Sheet: Density & Specific Gravity, So youve narrowed down what material you need thanks to our. Styrene-butadiene 0.93 The weight will appear in both metric and common US units. 1, Zhongshan Rd., Dacun Township, Changhua County 515, Taiwan (R.O.C. Putnam, CT 06260 0000015048 00000 n Others might see it as an important way to reduce risk or liability. 0000129490 00000 n Polycarbonates are commonly used for eye protection in the creation of lenses for sunglasses, sport and safety goggles. Polybutylene 0.60 To sum up, its a no-go. | Contact, Home 0000153750 00000 n WebSupplier: U.S. This site requires JavaScript to function. Whether your business is local or global, we can help to ensure that your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. 0000002716 00000 n In order to help you make better-informed decisions about the products that you buy, today we will go through the seven different types of plastic, how they differ, and their impact on the environment. If youve ever felt this way after reviewing a material data sheet, then this next Impact Plastics Blog series focused on Understanding your Data Sheet is for you. Portions throughout the same sample may also differ in density due to differences in crystallinity, thermal history, porosity, or changes to the material composition, such as the addition of a filler or pigment. Blood normally has a specific gravity of ~1.060. Training Online Engineering.