0000005093 00000 n Join our movement of Global Change Agents to receive exclusive invitations and updates. 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Specific gravity, generally speaking, measures the density of an object as compared to water. or in connection with, the use of this information. 0000133447 00000 n 0000128624 00000 n used for pressurized water systems - sprinkler.. highly resistant to acids, bases and many solvents, resistant to a variety of acids and bases, may be damaged by some solvents and chlorinated hydrocarbons, usable for water, gas and drainage systems, similar to PVC - but designed for water up to, resistant to abrasion, acids, bases, solvents and much more. This test is often seen with the designation ASTM D792. CONSTITUTION: An isotactic polyolefin powder or particle of an average particle 0000004265 00000 n the molded piece as compared to the weight of an equal volume of water 0000157774 00000 n 0000005946 00000 n Moreover, the decomposition of BPA in landfills does not occur meaning that this chemical will be persistent in the ground and will eventually find its way into water bodies contributing to aquatic pollution. The American Society for Testing and Materials (ASTM) is an organization that defines and sets standards to ensure good quality and workmanship. One of the most basic differences between varieties, however, can be found in how much they weigh. 0000127802 00000 n Pressure Vessel 0000161897 00000 n Power Transmission Tech. It is 250 times stronger and just as clear as glass. General Fax: 860-963-1998, Understanding Your Data Sheet: Density & Specific Gravity, So youve narrowed down what material you need thanks to our. Intertek is the industry leader with employees in 1,000 locations in over 100 countries. Please read AddThis Privacy for more information. ), Copyright 2000 - Health effects vary depending on the resin and plasticizers in this plastic that often Polyacronitrile 1.17 0000135948 00000 n Therefore, the specific gravity is a unitless number. 0000015222 00000 n You have no items in your cart. +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 In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss Polymethylpentene 0.83 0000086690 00000 n Natural rubber 0.91 Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! WebSpecific Gravity - SG - Tensile Yield Strength - y-(10 3 psi) Tensile Modulus - E - (10 3 psi) Coefficient of Linear Expansion - - (10-6 in/in o F) Thermal Conductivity - k - (Btu in 7 0 obj<> endobj xref 7 103 0000000016 00000 n Only emails and answers are saved in our archive. Definition: Density v.s. Not all plastic is born equal. xb```f`g`g`0cb@ !V6C'``D&yY(J-Ftt@UJ `H Dvp48(kha``aAA8koxD(lb'ftb~ef.aS-`0`"#a(1&' .8ffgS D!f' 0000051762 00000 n However, various factors can affect density such as crystallinity, loss of plasticizer or absorption of solvent. Contrary to HDPE, LDPE is characterized by low-density molecules, giving this resin a thinner and more flexible design. Because its made with long unbranched polymer chains its much stronger and thicker than PET. Though some manufacturers use grams per cubic centimeter to indicate the weight of their products, others merely provide the specific gravity of their material.
. Note: Both densities need to be in the same unit as they will cancel each other and produce SG. 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. Second, polystyrene foam blows in the wind and floats on water, due to its low specific gravity. 0000005127 00000 n 0000160831 00000 n Polyamide Engineering Book Store Tensile yield strength is the maximum engineering stress in psi (or Pa) at which a permanent non-elastic deformation of the thermoplastic material begins. Put theplastic specific gravityin perspective! | Contact, Home Specific gravity and density are especially relevant because plastic is sold on a cost per pound basis and a lower density or specific gravity means more material per pound or varied part weight. There are two basic test procedures- Method A and Method B. The more common being Method A, can be used with sheet, rod, tube and molded articles. Mass Versus Technical name - High-Density Polyethylene its an incredible resistant resin used for grocery bags, milk jugs, recycling bins, agricultural pipe, but also playground equipment, lids, and shampoo bottles among others. 0000155825 00000 n 0000117111 00000 n It is mostly used for food and drink packaging purposes due to its strong ability to prevent oxygen from getting in and spoiling the product inside. 0000042285 00000 n The specific gravity of a substance is a comparison of its density to that of water. 0000173991 00000 n POM 1.41-1.43 Specific Gravity = (Weight A / Weight B) Density = (Weight A / Weight B) * 0.9976 g/cm3 can be special ordered. 0000002356 00000 n ABS 1.04-1.07 LLDPE 0.91-0.94 Specific Gravity (SG) is defined as the ratio of 6I&dsV.G{w+Z#Ot>wY[~JKWr#oyOIIl(RV[U|i:n0qfB#}CNs,%|PEyeTeB Polystyrene is the sixth type of plastic on the list and it can be solid or foamed. Copyright 2000 - 2023 United States Plastic Corporation. i.e. 0000139528 00000 n 1 gallon of water weighs 8.33 lbs. Economics Engineering The best-known plastics of this group are polycarbonates(PC) used to build strong,toughproducts. The information is provided by Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! WebSpecific Gravity Information. The density of water is 1.0 g/mL at room temperature, so the specific gravity is equal to the density of the object expressed without a unit. Polypropylene 0.90-0.92 Plastic (CR-39) and Crown Glass are considered base index with indices of 1.498 and 1.52 respectively. SPECIFIC GRAVITY- The ratio of the weight of the molded piece as compared to the weight of an equal volume of water ASTM D792. LDPE 0.91-0.93 Bearing Apps, Specs & Data 0000002775 00000 n 6, Sec. 0000124314 00000 n Engineering Mathematics "Density" has its own unit of measurement, 1 g/cm3 or 1 kg/m3, in contrast, specific gravity has no unit of measurement goes with it; nevertheless, although they don't have the same meaning, they have the same value because density of water is quite close to 1g/cm3. Specific GravityDensity and specific gravity sound quite similar, some even say that they are synonyms; however, they are actually not the same, below we are going to introduce the differences of them.What's the meaning of "Density"?Density ismass or weight of a substance per unit volumeundernormal temperature and pressure. 0000008409 00000 n Materials with an index between 1.53 and 1.57 are sometimes considered mid-index, while 1.58 and greater is considered high-index.Vivak Sheet has become a staple in the point-of-purchase industry due to its economic advantages compared to polycarbonate and superior impact strength over acrylic. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Plastics Synthetics The information contained in this article is for general information purposes only. Downloads Flat Plate Stress Calcs Easy for Beginner: Plastic Material Identification by Buoyancy Test, How to Identify Plastic Materials by Burn Test Accurately, No.98, Ln. 0000135081 00000 n Specific gravity (S.G.) is a measure of the relative density of a substance as compared to the density of water at a standard temperature. In 1988, theSociety of the Plastics Industryintroduced the Resin Identification Code (RIC) system which divided plastic resins into 7 different categories. The member-related functions have been closed due to the deactivation of cookies. HDPE 0.96-0.97 Polymers typically have a benchmark density that can offer an approximate value of what the density of a particular material can be expected to be. 0000014816 00000 n 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. 0000158889 00000 n Some of our calculators and applications let you save application data to your local computer. 0000136804 00000 n In fact, PET bottles arethe most widelyrecycled plasticin the world! 0000014066 00000 n ), Plastic Material: Density & Specific Gravity.