How much is the compressive strength of stainless

How much is the compressive strength of stainless steel elbow?

Stainless steel elbow refers to the stainless steel elbow pipe fittings called stainless steel elbow products, mainly used in the pipeline bend, in the pipeline under pressure: can withstand 12.89MPa. Equivalent to 128.9kg/c㎡. This is the theoretical pressure strength, if the wall thickness is thick enough, welding quality is high, the actual pressure is higher than the theoretical pressure. If it is seamless stainless steel elbow, the material conforms to the national standard, know that the compression force must be greater than the theoretical pressure. The pressure wall thickness (actual wall thickness) strength (210)/OD wall thickness and OD unit is mm for stainless steel tubes and elbows. The calculation result is a single location of kg/c square meters (MPa), the strength unit is σ0.2MPa304 material strength is ≥210, the material sheet will mark the strength of each batch belongs to 304 material.

The smaller the diameter of the stainless steel elbow, the greater the pressure, because it disperses the pressure per unit area. The pipe with the same wall thickness is 6 millimeters thick, the outer diameter of 114 elbow, his working pressure is about 40KG, but in fact its damage pressure is above 500KG, that is to say, when the temperature of the medium is normal temperature, the elbow can be compressed under such a large pressure per square inside. However, under the condition of the same thickness and temperature, when the outer diameter of the elbow is 219 and the thickness is 6 mm, its working pressure is about 25KG, and its actual failure pressure is about 240KG. Why are the failure pressures of the elbow with the same thickness different? The main reason is that the inner wall area of the elbow is much larger than that of the elbow 114.

The temperature of stainless steel pipe is also an important factor affecting the pressure resistance of stainless steel elbow, the working temperature of our stainless steel elbow can not exceed -196℃~800℃, because with the increase of temperature, the pressure capacity of the elbow is getting smaller and smaller, and the pressure under the condition of low temperature will be much higher, even if the thickness of super many elbow materials, In this way to ensure the normal operation of stainless steel elbow.