Another reason to replace a seat is if a valve has broken because the seat is not concentric with the guide. Misalignment between the seat and guide causes the valve stem to flex every time the valve closes. Eventually, this flexing leads to metal fatigue and valve failure.
However in many cases, there are a select few items that withstand the inferno. The average house fire burns at a temperature of about 1,100 degrees Fahrenheit, which isnât hot enough to destroy most metals and earthly-made substances.And if an item is well-placed and small in size, its chances of survival increase drastically.old melts at a much cooler temperature â about 2,000 degrees Fahrenheit â but thatâs enough to survive most house fires. Platinum jewelry is the priciest, so itâs a good thing that the metalâs melting point is just higher than 3,200 degrees Fahrenheit. Sapphire and Ruby also possess extremely high melting points.
In addition, the average length of a house fire is approximately 30 minutes, depending on the responsiveness of the local fire department. Of course, all of this is contingent on the size and build of the house. Multi-story homes will burn hotter and be more difficult to put out than a single story home.or this rating a specially designed room is heated to 1200 Â°F, which is the highest temperature in the average house fire. Once the room is heated, the safe is then placed inside the room and sensors inside the safe keep track of the internal temperature of the safe for the duration of the test, 1.5 hours.