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]

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Saddam- Your supplier should have material test reports and documentation to show how the material was manufactured. May you help me about correlation Bolt Tensile Strength vs Pressure? Mehul — We do not heat treat in house, so you will need to contact a heat treat facility to b specifics about their process.

B7 and B7M are two separate grades within A that are made from alloy steel.

Grupo Kazerooni – Varilla Roscada, esparragos B7, B16, Monel y mas Varilla Roscada

Mechanically, assuming that they are the same grade, they will be identical. We have summaries for both ASTM standards on our website. Class 1 refers to lower strength materials whereas class 2 refers to higher strength, strain hardened material. At wellhead platformB7 bolts used instead of B7Mis there any big issue. It is usually used in higher temperature applications.

Esparragos ASTM A193 Gr. B7, ASTM a 193 Grado B7 Esparrago, Stud Bolt

Hello, Please tell me about use B7 and B7M which one and for what, for instance in a valve. Any substitution should be run by an engineer.


Waqas- You are correct, no further processing is permitted esparraggos final heat treatment. Usama- In order to change B7 to B7M, you would need to temper the bolts to a lower hardness. I see no issues using the same bolting material to make washers for use here. If the purchaser requires indentation testing, he must specify 3.

Grupo Kazerooni – Varilla Roscada, esparragos B7, B16, Monel y mas Vulcan

There are demagnetization techniques, but normal, off the esparragos B7 and B7M bolts will be magnetic. Ari- There are some similarities in tensile and ewparragos, but they are not identical. As for why the larger bolts are 8tpi, the threads are more shallow than their UNC counterparts, which creates a larger thread root area.

Regardless, the hardness testing should be completed after the final heat treatment. If the purchaser does not specify 3.

You will need to consult with the project engineer. However, I find some contradicting answers when searching around, can it be both depending on the heat treatment and consequent microstructure?

Is it just the hardness we are talking abt? Dear sir, Can u explain why yield and tensile strength reduce when increase the bolt diameter? Is there any calculation about it?


There are some differences between the two. What standard is the nut compatability chart listed on your website pulled from?

ASTM A193 B7 vs. A193 B7M

The design temperature of the tank is esparrzgos deg C only. What can be the risks if we accept it as is? Leave this field empty. B7 2-can galvanize hex nut A GR. Ashkiani- A stud bolt is a threaded stud with no head, whereas a machine bolt has a forged head on one end. Your email address will not be published.

rsparragos The corresponding nuts standards are A grade 8M and F group 2. As we know B7M is having less strength but low hardness than B7, how it is helping us. Sohrabmohammadi — Yes, both esparrags those grades of fastener can be hot dip or mechanically galvanized. How can we convert B7 to B7M? There are no ASTM standards for stainless washers. Hi, please let us know what is the difference between A and A We have a valve with Grade B7 bolts that need to be change out, we will need longer bolts when going back together.

Hafiz — No, the bolts would have the same dimensions regardless of which grade was specified.