What bolts are used for stainless steel flanges?
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Great gods from all walks of life: Is there any standard that has relevant regulations on stainless steel flanges, what bolts to use, and what kind of bolts to use? Must stainless steel bolts be used, or can alloy steel or carbon steel bolts be used?
It is recommended to check Baidu, the corrosion principle of stainless steel and carbon steel contact.
Unless the contract requires it, but the standard does not require it, carbon steel bolts can be used, but they are prone to "tears". Stainless steel bolts are softer.
What tasks do flanges and bolts and nuts perform respectively?
. The material of the flange is not the basis for selecting the bolt material, as long as the preload force is sufficient.
It mainly depends on the occasion of use, parameters used, etc.
Generally, chromium-molybdenum steel is used, which has good strength and corrosion resistance. Stainless steel bolts of the same material are soft on the one hand, and the cost is also high.