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. Ultimate tensile strength is the maximum stress the thermoplastic material can withstand before failing, whichever occurs at the higher stress level. One of the most remarkable features of plastic is just how greatly its features can vary from variety to variety.

. 0000014066 00000 n 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. Plastic (CR-39) and Crown Glass are considered base index with indices of 1.498 and 1.52 respectively. 0000007137 00000 n For convenience's sake, we have converted the specific gravities provided by the manufacturers of our products to grams per cubic centimeters. Helium gas has a density of 0.164g/liter It is 0.139 times as dense as air . Polyethylene terephtalate 1.34-1.39 Sponsored Links You can target the Engineering ToolBox by using AdWords Managed Placements. 0000148052 00000 n The specific gravity of a substance is a comparison of its density to that of water. 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. Copyright 2000 - 2023 United States Plastic Corporation. Join our movement of Global Change Agents to receive exclusive invitations and updates. resistant to a variety of bases and acids, some solvents and chlorinated hydrocarbons may damage the material, common as DEV - Drainage, Waste and Vent - pipes, only compression and banded type joints used. 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! Therefore, the specific gravity (which is dimensionless) for a liquid has the same numerical value as its density in units of g/cm3. But if youre new to the industry, or dont work in a technical role, the information stated on material data sheets can leave you more confused than when you started. Should reactivate cookies? 0000011164 00000 n Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! This website uses cookies to collect necessary user browsing behaviors so that we can provide you with a better browsing experience. 1, Zhongshan Rd., Dacun Township, Changhua County 515, Taiwan (R.O.C. 0000015222 00000 n Power Transmission Tech. 0000171239 00000 n 0000163869 00000 n Heres a brief recap of what we have learned so far: We hope this blog post has provided some clarity about the differences among all these plastic types. Environmentally-speaking its among the worst types of plastic: first, it is regarded as notbiodegradable. +hSm)/BNy-G:ipb4m(5i9 18N 2Y9 E7q!#5qnc"w2T.Cz(k4l@Ar$.n(*piE1uh%UF?x]*t4\J4j1i,/7Mq$``'> 0000004927 00000 n 0000175797 00000 n WebSpecific Gravity Information. WebMaterial density g/cc 1 g/cc = material density = specific gravity Therefore, knowing the specific gravity and with the help of the handy conversion table on the shared drive one 0000177508 00000 n Because its made with long unbranched polymer chains its much stronger and thicker than PET. We don't collect information from our users. Plastics that belong to group number one are made out ofpolyethylene terephthalate or PET. Engineering Calculators 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. Engineering Book Store Impact Consumer Products Group All Rights Reserved 2023, 5 Highland Drive in various applications. More frequently, however, anything over 1.53 is called high-index. Flat Plate Stress Calcs Others might see it as an important way to reduce risk or liability. dixonvalve.com. Bearing Apps, Specs & Data ~P2p@0$:+mbsuz! The purpose was to provide a consistent national system to facilitate recycling of post-consumer plastics." Hardware, Metric, ISO To sum up, its a no-go. Roto-molded LLDPE with thick walls for superior strength anddurability. Thermodynamics Physics 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. Machine Design Apps 0000005946 00000 n You have no items in your cart. Polysulphone 1.24 Manufacturing Processes 0000129490 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. 0000173123 00000 n Polypropylene 0.90-0.92 can be special ordered. 0000160831 00000 n Minerals and other Materials - Specific Gravities Specific gravities for minerals and other materials. WebThough some manufacturers use grams per cubic centimeter to indicate the weight of their products, others merely provide the specific gravity of their material. 0000172297 00000 n If plastic cannot be identified in the six types above-mentioned, then it will be included in group number 7. 0000140352 00000 n 0000173991 00000 n HWM7W=T+[h#E\Zc"YLGr>ZH 0000042285 00000 n 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. Training Online Engineering. It is a very inexpensive resin per unit weight and easy to create, for these reasons it can be found everywhere: from beverage cups, insulation, packing materials to egg cartons and disposable dinnerware. It is 250 times stronger and just as clear as glass. Yield point is the first point where the specimen yields, where the specimen's cross-sectional area begins to contract significantly, or where the strain can increase without increase in the stress. 0000006910 00000 n Therefore, the specific gravity is a unitless number. Plastics have a really wide specific gravity range depending on its composition. 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 0000176664 00000 n This may also be referred to as relative density. 0000144583 00000 n One of the most basic differences between varieties, however, can be found in how much they weigh. WebThe Specific Gravity - SG- is a dimensionless unit defined as the ratio of density of the material to the density of water at a specified temperature. Definition: Density v.s. The standard test method for the determination of density and specific gravity Now we need a minimum of 6.16 x 1.28 or 7.88 oz of shot capacity. 0000015048 00000 n This test is often seen with the designation ASTM D792. Specific Gravity = (Weight A / Weight B) Density = (Weight A / Weight B) * 0.9976 g/cm3 0000016671 00000 n Specific gravity of a material can be calculated by following equation: The testing method of SG for plastic systems is ASTM D792 and ISO 1183. SG of plastic is less compared to other materials influence its price; thus all plastic materials are sold on cost per weight basis. Perhaps better known by its commercial name Styrofoam its highly inflammable and dangerous as it can leach harmful chemicals, especially when heated (which often happens because, as its found in disposable take-out containers, people oftentimes microwave it to heat up the food inside it). Downloads WebSimply enter the density of the material in which your are interested, select the shape from the drop-down list, enter the dimensions, then hit the Calculate button. 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. Density refers to the mass per unit volume of a material, whereas SG refers to a measure of the ratio of mass of a given volume of material at 23C to the same volume of deionized water. WebSince the density of a fluid varies with temperature, specific gravities must be determined and specified at particular temperatures.

Expanded PVC sheet plastic is the ideal material where durable construction materials are needed. Civil Engineering SPECIFIC GRAVITY- The ratio of the weight of Bad0Ai2qe5a>/=Amk.uB^Hfd]hG!+lqqTDlz!" 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. Our Polycarbonate sheet offers a levelof safety that no other clear glazing material can match. | 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. Water's weight is one gram per cubic centimeter - a material with, for example, 1.5 specific density would then weigh 1.5 grams per cubic centimeter. The lower the density or SG of a particular material, the more material per pound or surface area you will get. Thermodynamics Directory | Heat Transfer Directory, Specific Gravity Table Chart and Equation. Specific Gravity means specific value of an object under normal temperature and pressure. WebSupplier: U.S. The American Society for Testing and Materials (ASTM) is an organization that defines and sets standards to ensure good quality and workmanship. Plastic Material: Density & Specific Gravity PA66, 1.13 - 1.15 PA66 + 30% GF, 1.37 PA66 + 30% MF, 1.35 - 1.38 PA66 IM, 1.05 - 1.10. Physicists use 39.2 F (4 C) as the standard, but engineers ordinarily use 60 F. In the International System of Units (SI Units), the density of water is 1.00 g/cm3 at the standard temperature. 0000165724 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 Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. 0000102892 00000 n 0000131261 00000 n or in connection with, the use of this information. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. 0000117341 00000 n 0000004435 00000 n Used in plastic bags,six-pack rings, various containers, dispensing bottles, and most famously for plastic wraps, is not often recycled through curbside programs. Gears Design Engineering It holds the number one spot because of its widespread utility. Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Videos Design Manufacture **Ji-Horng Plastic is a leading plastic injection molding manufacturer since 1986, for more information, please contact us!**. 0000004265 00000 n Though some manufacturers use grams per cubic centimeter to indicate the weight of their products, others merely provide the specific gravity of their material. Pumps Applications Learn more about our materials and get in touch withour sales team today! Butyl rubber 0.92 0000167357 00000 n The most widely used member of the vinyl family, PVC is excellent when used for corrosion-resistant tanks, ducts, fume hoods and pipe. 0000124911 00000 n Specific gravity and density are especially relevant because plastic is sold on a cost per pound basis and a lower density or specific This bucket is economically priced, while still featuring premium bucket quality and durability. 0000002953 00000 n Electric Motor Alternators 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! It has the simplest structure of all the plastics, making it easy and cheap to produce. The specific gravity of plastic is the ratio of the density of plastic to that of a reference substance (Usually water). Therefore, for the same 1cm volume, the melted plastic weighs less than the solid plastic (0.933 g/cm vs. 1.054 g/cm). 0000130285 00000 n 0000137613 00000 n 0000126937 00000 n These applications will - due to browser restrictions - send data between your browser and our server. 0000050964 00000 n In 1988, theSociety of the Plastics Industryintroduced the Resin Identification Code (RIC) system which divided plastic resins into 7 different categories. 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' Second, polystyrene foam blows in the wind and floats on water, due to its low specific gravity. Learn More, Formally confirming that your products and services meet all trusted external and internal standards. ?b0/7>41"FUm'V69mjqQn[pd@,XrKC^k $e-eI]abs6QCoq$Y+4Gb=.bsm?JBny!Q.h38'!xSi{C ,*+R9hHz 0000006688 00000 n HVAC Systems Calcs 7 0 obj<> endobj xref 7 103 0000000016 00000 n Fun fact: because it is VERY resistant to fatigue, PP is usually used for living hinges (the thin piece ofplastic that allows a part of a product to fold or bend from 1 to 180 degrees). 0000161897 00000 n Ethylene-propylene 0.86 6I&dsV.G{w+Z#Ot>wY[~JKWr#oyOIIl(RV[U|i:n0qfB#}CNs,%|PEyeTeB 0000139528 00000 n But they can also be found on mobile phones and, more frequently, in compact-discs (CD). Pressure Vessel Finish: Solid. Feedback Advertising Acrylic sheeting, commonly referred to as plexiglass sheeting, is the most common alternative to traditional glass. PA-11 1.04 This changes the ratio for our calculation; it is now 0.945/0.74 or 1.28. Any reliance you place on such information is therefore strictly at your ownrisk. Engineering Forum Learn More, Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards. Finishing and Plating Polymethylpentene 0.83 Blood normally has a specific gravity of ~1.060. One of the most commonly used plastics, our heavy duty acrylonitrile butadiene styrene, or ABS sheeting, has a high impact resistance and durability to be used for automotive, printing, and display applications. This site requires JavaScript to function. ?qbC2]2F 0000149107 00000 n 0000018128 00000 n 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. 0000143715 00000 n 0000124314 00000 n "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. 0000051762 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. PA-6 1.12-1.13 Some elements may not work properly. warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with These specialty materials have densities of up to 15 g/cc yet still have the moldability of plastics. 0000125208 00000 n A Specific Gravity of less than 1 means that the 0000124825 00000 n Some manufacturers may consider testing and certification an obstacle to overcome to get to market. 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).

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. The lower the density or SG of a particular material, the more material per pound or surface area you will get. 0000005093 00000 n Learn More, Validating the specifications, value and safety of your raw materials, products and assets. Materials with an index between 1.53 and 1.57 are sometimes considered mid-index, while 1.58 and greater is considered high-index. For PS the melt density is 0.945 g/cm 3 and for PP it is about 0.74 g/cm 3. WebSpecific gravity is a measure of the ratio of mass of a given volume of material at 23C to the same volume of deionized water. i.e. 0000135948 00000 n 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. 0000012608 00000 n ph20 = density of water, standarized at temperature 4C (kg/m3), (Samples may vary, and these figures are approximate. 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. Engineering Mathematics It comes in two basic forms: rigid and flexible. 3t6/8lM2-lA 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. The specimen is weighed first in air (Weight A), and then weighed when immersed in distilled water at 23C (Weight B). Hard and sturdy, it can withstand high temperatures and is found in tupperwares, car parts, thermal vests, yogurt containers, and even disposable diapers. 0000014816 00000 n Google use cookies for serving our ads and handling visitor statistics. CONSTITUTION: An isotactic polyolefin powder or particle of an average particle 0000155825 00000 n 0000170169 00000 n Method A is the more common test method used, and can be performed with sheet, rod, tube and molded pieces of plastic materials that are not affected by water. Continue reading to learn more! ABS 1.04-1.07 Not all plastic is born equal. We carry a large selection of American-made Tamco industrial strength tanks. Polytetrafluorethylene 2.27, Working Days & hours Details for Alfa Plast Mould, Alfa Plast Mould 2008 | All Rights Reserved. Lubrication Data Apps For example, some types of plastic are reusable and others arent because of the chemicals they contain; some can be recycled and others need to be disposed of in a different way. From here density and SG are calculated using the following formulas: Specific Gravity = (Weight A / Weight B)Density = (Weight A / Weight B) * 0.9976 g/cm3 , where 0.9976 g/cm3 is equal to the density of distilled water at 23C. Fluid. Specific Gravity Density in plastics is the measurement of mass per unit volume. Other custom sizes of trays, special partitions, flanges, outlets, etc. Density of Plastics: Technical Properties. Density measures the mass per unit volume. It is calculated by dividing the mass of the material by the volume and is normally expressed in g/cm 3. The density of a plastic sample may change due to change in crystallinity, loss of plasticizers, absorption of solvent, etc. 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. Specific gravity, 0000005504 00000 n

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