I have some questions for the big players in Chemical Street
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I would like to ask whether 2205 elbow tubes with a thickness of 711*30 can withstand an internal pressure of 70 kilograms
If the 711*30 you mentioned refers to a elbow with a diameter of 711 millimeters and a wall thickness of 30 millimeters, then for a stainless steel elbow made of 2205 material, an internal pressure of 70 kilograms (approximately equivalent to 7 megapascals) should be sufficient. 2205 duplex stainless steel performs excellently in many high-pressure environments due to its excellent mechanical properties and good corrosion resistance. However, it is still recommended that you check the specifications of the specific product or consult the manufacturer to ensure safe use, especially in applications involving high voltage. .
The stress is simply calculated as PD/2t, and then compared with 30% of the yield strength
The calculated pressure resistance is about 22.8 MPa, but considering a safety factor of 3–4, it is still too high