Strength gravity

Product no. Durometer Tensile Specific hardness strength, gravity shore psi ASTM ASTM ASTM D-792 D-2240 D-412 Elonga- tion, percent ASTM D-412 Modulus ASTM D-412 j Tear Compres-strength sion set, oli,die C percent ASTM ASTM D-624 D-395 ... 

Specific Durometer Tensile hardness, strength, gravity shore psi... 

Elastic Tensile strength gravity Specific Specific ... 

Melting temperature, °C Crystalline Amorphous Specific gravity Water absorption (24 h), % Dielectric strength, kV mm ... 

Rubber Specific gravity Durometer hardness (or Shore) Ultimate elongation % (23°C) Tensile strength, lb in 2 (23°C) Service temperature, °C ... 

Testing. Chemical analyses are done on all manufactured abrasives, as well as physical tests such as sieve analyses, specific gravity, impact strength, and loose poured density (a rough measure of particle shape). Special abrasives such as sintered sol—gel aluminas require more sophisticated tests such as electron microscope measurement of a-alumina crystal si2e, and indentation microhardness. 

Material Tensile strength, MPa Shear strength, MPa Elongation, % Modulus of elasticity, GPa Specific gravity Hardness... 

Insulation Common designation Tensile strength, MPa Elongation, % Specific gravity Dielectric strength, kV /mm Dielectric constant at 1 kHz Dissipatic factor at kHz... 

Poljraer Specific gravity Mooney viscosity Tensde strength, MPa Elongation, % Ash, % Acetone extract, %... 

Elastomer Specific gravity Hardness, Shore A Tensile strength, MPa" Elongation, % Resihence Compression e set Impermeability e to gases... 

Descriptions of sulfuric acid analytical procedures not specified by ASTM are available (32,152). Federal specifications also describe the requited method of analysis. Concentrations of 78 wt % and 93 wt % H2SO4 are commonly measured indirectly by determining specific gravity. Higher acid concentrations are normally determined by titration with a base, or by sonic velocity or other physical property for plant control. Sonic velocity has been found to be quite accurate for strength analysis of both filming and nonfuming acid. 

Stannous Sulfate. Stannous sulfate (tin(Il) sulfate), mol wt 214.75, SnSO, is a white crystalline powder which decomposes above 360°C. Because of internal redox reactions and a residue of acid moisture, the commercial product tends to discolor and degrade at ca 60°C. It is soluble in concentrated sulfuric acid and in water (330 g/L at 25°C). The solubihty in sulfuric acid solutions decreases as the concentration of free sulfuric acid increases. Stannous sulfate can be prepared from the reaction of excess sulfuric acid (specific gravity 1.53) and granulated tin for several days at 100°C until the reaction has ceased. Stannous sulfate is extracted with water and the aqueous solution evaporates in vacuo. Methanol is used to remove excess acid. It is also prepared by reaction of stannous oxide and sulfuric acid and by the direct electrolysis of high grade tin metal in sulfuric acid solutions of moderate strength in cells with anion-exchange membranes (36). 

Hardness Specific gravity Tensile strength. Modulus of elasticity, GN/m Thermal conductivity, W/(m-K) Coefficient of expansion, 10-6"C... 

Typically, grape skin extract has a specific gravity of 1.13 g/mL at 20°C, a solids content of 28—32° Brix (=t3°), a pH of 3.0, and a color strength as anthocyanin of about 1.25% (as measured at 520 nm ia pH 3.0 citrate buffet). Grape skin extract is also available as spray-dried powders with color values three to four times those of the liquid. The properties and uses of grape skin extract ate similar to those of grape color extract. 

Tliermosets Specific gravity Tensile strength ModiUns of elasticity, tension Impact strength, lzod Maximum use temperature (no load) HDT at 2.54 Ib in -" Chemical resistance s ... 

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