How to distinguish between cast steel by the pneumatic valve and stainless steel as pneumatic valve

By the pneumatic valve is often used in the production of our work at ordinary times of a pneumatic valve, because of his condition is different, so it also corresponding different material, steel, stainless steel, and so on, then how we distinguish between cast steel and stainless steel? Below we can distinguish from five aspects to cast steel by the pneumatic valve and stainless steel as pneumatic valve











1. Surface brightness: surface hair dark hair grey cast iron, cast steel surface shiny, gray iron in cast iron and graphite cast iron is big different, brighter than grey cast iron.





2. Particle surface: the surface of the cast steel is very dense particles generally invisible to the naked eye. Grey iron and iron particles can be seen, and grey iron particles.





3. 声音：铸钢件碰撞发出的声音是“刚刚”的与铸铁件声音不一致。





4. 气割：铸钢件表面非常粗糙，浇口、冒口的面积都很大，而且一定要气割来清除，墨铸铁用气割是割不断。





5. Resilience: cast steel toughness is close to steel, cast iron and cast steel toughness ink compared it slightly, thin-walled to 20 30 degrees of bend, but grey cast is no toughness.