Vulcan entered the long bar quench and temper market and now the Heat Treating division is the largest long bar, induction heat treater in the world with annual. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. In developing this information, Fastenal has. Esparragos #B7 #Cadmiados #Fluorocarbonados #Galvanizados #Quito # Ecuador [email protected]

Author: Mobar Ararr
Country: Paraguay
Language: English (Spanish)
Genre: Finance
Published (Last): 10 May 2004
Pages: 425
PDF File Size: 7.53 Mb
ePub File Size: 19.63 Mb
ISBN: 431-5-25356-607-5
Downloads: 58794
Price: Free* [*Free Regsitration Required]
Uploader: Vukora

Noble — I am sorry, but we cannot make any specific recommendations regarding whether or not you would need a coating. Any substitution should be run by an engineer.

We have summaries for both ASTM standards on our website. There are demagnetization techniques, but normal, off the shelf B7 and B7M bolts will be magnetic. As for why the larger bolts are 8tpi, the threads are more shallow than their UNC counterparts, which creates a larger thread root area. ASTM A is a low carbon steel, low strength, general purpose bolt standard.

It is made from alloy steel which is a ferritic steel. B7 and B7M are two separate grades within A that are made from alloy steel. I have a query. B7 and B7M are very different.

Will Grade 8 bolts work as a replacement? It seems to be a requirement in ASTM You can find summaries for both ASTM standards on our website. Mechanically, assuming that they are the same grade, they will be identical.


Washers can, and are sometimes used with both stud bolts and machine bolts. epsarragos

Enviornment is a little bit corrosive. I am working in petroleum refinery. B7 2-can galvanize hex nut A GR. Which is category for Mushroom Head roofing bolt without neck to be manufactured?

Hello, Please tell me about use B7 and B7M which one and for what, for instance in a valve. We eslarragos not familiar with a bolt specifically called a mushroom head. As we know B7M is having less strength but low hardness than B7, how it is helping us.

estormex | Esparragos

There are no ASTM standards for stainless washers. However, we do not have any engineers on staff, so we cannot speak to all the possible risks, but what we can say is that 2HM nuts are wsparragos specialized, and I would assume there is a good espardagos that they were originally specified. This is a different grade of material than A Grade B7. Class 1 refers to lower strength materials whereas class 2 refers to higher strength, strain hardened material.

Leave a Reply Cancel reply Your email address will not be published. The design temperature of the tank is 85 deg C only.

Esparragos ASTM-A193 Gr B7, Tuercas 2h Tuercas ASTM-A194 Gr 2h Bolt

Dear Sir, I have a query. This makes it important to understand the differences between the two specifications so that the correct material is ultimately provided.

Dear sir, how I can know this metal applied heat treatment after hardness testing.

I understand we could not tighten the internals bolts B7M in our case and it should withstand in extreme process condtion i. Even a simple cutting process will require an additional heat treat process.


May you help me about material specifications… I esparrabos a problem about material MS What is the difference between B7M and B7M comply to nace mr F is the recommended washer for A B7 bolts, and can a mild steel washer be used for A B7? Jayant- B7 and B7M bolts are chemically identical, so they would both have the same corrosion resistance, which is negligible.

What standard is the nut compatability chart listed on your website pulled from?

Esparragos ASTM A193 Gr. B7, 2 Tuercas A194 Gr 2h Bolt

Your advise esparragks be much appreciated. I do not know why the documents you reference do not mention the line, perhaps they have not been updated since the change was made. Ashkiani- The only difference is that the machine bolt has a head, and the stud bolt does not.

If the purchaser requires indentation n7, he must specify 3. A mild steel washer is not hardened and will likely not perform as well with B7 bolts or studs. The differences can come if the item is being used in nuclear or special applications, then there might be some additional requirements, but we are less familiar with those.