i need to make a slab in nbr to achieve tensile strength of 150+ We need hardness of 55 shore?
548902
have you tried silicone rubber.  tensile is typically better than 1500 and 55 shore a is average.
304941
As per ASTM requirement\n\nAt 3 days - 1740 psi\nAt 7 days - 2760 psi
259548
Hello, You might find this useful :o)\n\n\nDouble Shear Strength\n(Cold Drawn – 0.442” [11.23 mm] start size)\n\n% Cold DrawnShear Strength, ksi (MPa)\n1089 (614)\n2098 (676)\n30106 (731)\n40113 (779)\n50122 (841)\n60130 (896)\n\nCondition     Size   Double Shear \n                             Strength ksi (MPa)\nAnnealed   3/8” Ø (9.6 mm)     86 (593)\n \nNitronic 60 Austentic Stainless, 40% Cold Worked\n\nComponent    Wt. %  \n \nCr 17   \nFe 62   \nMn 8   \nN  0.14   \nNi 8.5   \nSi 4   \n \nDensity 7.62 g/cc 0.275 lb/in³   \n\nMechanical Properties \n  \nHardness, Brinell = 346 (Estimated from Rockwell C)\nHardness, Knoop = 413 (Estimated from Rockwell C)\nHardness, Rockwell A = 69.5 (Estimated from Rockwell C) \nHardness, Rockwell C = 38 \nHardness, Vickers = 362 (Estimated from Rockwell C) \nTensile Strength, Ultimate = 1345 MPa (195000 psi)   \nTensile Strength, Yield = 1055 MPa (153000 psi)  0.2% Offset \nElongation at Break = 20 %\nReduction of Area = 57 %\nModulus of Elasticity = 179 GPa (26000 ksi)  In Tension \nPoisson's Ratio = 0.3\nShear Modulus = 69 GPa (10000 ksi)\n\n\nThanks!\n\nMorgan :o)
983191
Depends what medium is eroding it.\nI think you're looking for the hardness scale.
891985
Contact Trenggo Minerals out of Malaysia.  If I can decipher your e-mail correctly, you are looking for barite mud, which is used in the drilling for oil and gas. \n\nTrenggo can be reached at: :+609 681 1400 \n\nThe parent website is at: http://www.m3nergy.com
943459
rockwell a b or c? and i believe that steel is 4130 steel which is about 65 on the rockwell c scale obviously give or take a few because the charts vary
416914
Try to make it at 3 feet.  It will probably be easier.  I'd probably use balsa wood.
306003
By bar I assume you mean reinforcing steel. Each size has a bend diameter. Go to the ASTM and pull up the chart. Next a hydraulic press is best to provide the action.
1070119
i think you can get a lot of this info rmation to clerar your doubts\n\nhttp://www.calce.umd.edu/general/Facilities/Hardness_ad_.htm
803612
There are some charts on:\nhttp://www.krausco.biz/tonagechart.html\n\nwhich give a tonnage based on several factors. Once you have a method for actually calculating, you could check your answer against this site:\n\nexerpt:\n"RULE OF THUMB formula for making multiple bends on a press brake. For shape shown, in mild steel with radii equal to metal thickness unless otherwise noted.\n\nMultiply Metal Thickness by factor = Tons per Foot\n\nExample for bottom bending\n16ga (.062) Mild Steel. .062 x 150 = 9.3 tons per foot."\n\nHope this helps!
820893
that depends on what kind of steel.  Not every steel is made the same way or with the same density so it varies.  I can tell you that a W14X56 is a 14" wide flange beam and weighs 56 lb/ft
735435
261360(!) assuming none have to be cut or get broken best order about 262.000 to be on the safe side. (The calculation is 4 slabs per sq yd and there are 4840 sq yds in an acre so you get 13.5 x 4840 x 4)
816490
Its better to get a design engineering guide from one of the plastic raw material suppliers as modifying the melt flow index would change many other properties also. A manufacturer rather than a distributor would probably provide you the information more readily.
139793
High tensile strength steel...however there are other non-metals that are actually stronger...carbon fiber materials being one possibility.
282242
that's a real vague question, try to be more specific or at least say what king of structure do u want? (steel, conc, ..?)\nanyways this is an exremely simple example.\n\nlets' say u want to design a tension member -carrying tension force = 100 tons, -between 2 supports and this member is a steel member of yield stress= 1.4\nso to get the area u need :\n100/1.4= 71.43 cm square let's say again u want it to be I-shaped steel then u'll need  I number 400 i.e IPE 400
519971
depends on the mineral
142989
I am having a hard time picturing the gaps you are trying to fill, so I'm not sure if my ideas will be helpful.  Perhaps you could try ceramic as an insulator.  It also depends on how long the surface will be exposed to the high temperatures.  If its not too long, perhaps you could use wood that has been soaked overnight in water.\nThe aluminum isn't a bad idea, but perhaps you need thicker aluminum.  Like maybe cut open a few soda cans and flaten the result into a crude sheet of aluminum.  Maybe two or three layers worth would do the trick.\nMaybe some gravel or stones?\nWell, those are just some ideas.  Not sure if any of them will work, but maybe that gives you some things to explore.