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Is LPG has high calorific value than methane?
Methane is CH4 and LPG(Butane) is C4H10. The energy in the Carbon Carbon bond (C-C)is more than that in the Carbon Hydrogen bond (C- H). Since there are more number of C-C bonds in butane (LPG) than in methane,calorific value of LPG or butane is higher than that of methane.
What is the Tg for PVC?
Tg of PVC is about 85°C.
Degree of freedom of ethanol -water at azeotrope?
phase rule F=C+2-p c= no. of components p=no. of phase here 2 represents temp and press are constant C=2 [water,ethanol] P=2[liq,vap] so,F=2
What Temperature diesel burns at?
2. What is the autoignition temperature of a) Petrol 246°C b) Diesel 210°C" http://hypertextbook.com/facts/2005/EileenTang.shtml Also check http://vitzy.net/forum/Diesel-Burning-Ratio-t1229.html Do not confuse autoignition with sustained flame temperature, which can vary widely due to a number of contributors. Flame temperature of openly-burned diesel at sea level in an environment of 70°F at 80% humidity can range from 900°C to 1200°C, due to factors such as completion of burn, particle size, etc. A good 'general answer' would be 1200°C, but the technically correct answer is a range, not a specific number.
What is the melting point of Polycarbonate roofing?
PC melting temp is approx 265 deg C, however its glass trans temp is 145 deg C - begins to 'soften'. Working limits are therefore below this value
A very hard tool steel will probably register about 70 on the what scale?
Rockwell C scale
How hard is HRC 56?
It depends on the type of scale.... rockwell A,B,C..... and the type of diamond used if you have that data, use this chart. http://www.carbidedepot.com/formulas-hardness.htm
What is the Rockwell C for tin?
Approx 37.8 Rockwell "c" scale
How do you convert shore scale c to Rockwell scale c?
To convert Shore scale C to Rockwell scale C, there is no direct formula as they measure hardness differently. Shore scale C measures indentation hardness while Rockwell scale C measures depth of penetration. These two scales cannot be directly converted into one another.
When reading the steel heat treatment notation RC what does the R mean?
RC stands for Rockwell Hardness C scale; the different letters A,B,C etc. are based on different loads and indenters for measurement. C scale is typical for steels, while B scale is typical for aluminum. There are conversion tables for these if needed.
How do you convert Rockwell b scale to c scale?
You dont. Minimum C is about maximum B. And the indentation is different. Even if you could convert it, the results would not be accurate.
What is HRC in rockwell testing machine?
HRC stands for Hardness Rockwell C scale. There are different scales; C is probably the most common for hardened materials. See the related link for more information.
Is a 35 high on the Rockwell C Scale?
Yes, a reading of 35 on the Rockwell C Scale would be considered relatively low as the scale generally ranges from 20 to 70. This indicates that the material is softer compared to higher readings on the scale.
What is the hardness of copper on rockwell scale c?
It can't be accurately converted.The softest metal on the C scale gets a 1 rating.That 1 rating is the equivalent of 82 on the B scale, which is the Rockwell scale used for copper.Copper and all it's alloys are down around the 40 range of the B scale.And you can't assume that a B scale 40 is half of a C scale 1, either. Since the tests use different metal ball sizes, it's an issue of being an unequal scale.
What is the Hardness Rockwell C scale?
This is a method used to determine the hardness of a metal. If you know the type of metal and the hardness, this will tell you the Tensile Strength of the metal and how well it was heat treated. The method uses a ball or a pin to strick the metal and leave a small indention. The size and depth that the ball makes in the metal is inversely proportional to the hardness. Using the scale, you can then determine if the part has completed the proper heat treatment as required by the Engineering drawing. There are 3 Rockwell scales: A, B, C. Rockwell C scale is for the hardest of metals such as steel. Rockwell B is for metal such as soft aluminum and A is for even softer metals.
What is Rockwell C?
Answer Rockwell C is a method to measure the hardness of a metal object. The hardness of the metal is a direct correlation to its strength properties: i.e., Tensile Strength. The scales can be found in any engineering or matierals reference books. A test devise is used to strick a metal object with a small pointed hammer. The size of the dimple is compared to a chart to give you the Rockwell C hardness value. There are 3 charts for measuring hardness: A scale, B scale and Cscale. Rockwell C is for the hardest of metals such as very high strength steel. Rockwell A is for much softer materials including something as soft as clay, I believe. During manufacture, a hardness test will be performed to ensure that the finished product meets the design engineer's criteria to ensure the part.
What rockwell c hardness is grade 10.9?
The Rockwell C Hardness for a grade 10.9 fastener is 32 - 39HRC or 320 - 380Hv10
