SAE 304 stainless steel temperature strength and thus the specified minimum tensile properties of 304L are lower than for 304. However, nitrogen also has a strong influence on room temperature strength and a tiny addition of nitrogen produces 304L with the same tensile strength as 304. Thus, practically all 304L is produced as dual certified 304/304L, meaning it meets the minimum carbon content of 304L and also meets the minimum tensile strength of 304. SAE 304 stainless steel SAE 304 stainless steel is the most common stainless steel. The steel contains both chromium (between 18–20%) and nickel (between 8–10.5%) metals as the main non-iron
Braided stainless steel brake lines additional rubber outer sheath, braided stainless steel hoses typically consist of a Teflon® or generic PTFE (polytetrafluoroethylene) inner hose wrapped in a braid consisting of stainless steel wire. The stainless wire braid more effectively resists expansion due to pressure inside the hose core. This improves brake system effectiveness by more directly transferring operator input (hydraulic pressure) to brake friction surfaces. While available without a coating, the stainless braid is typically coated or covered with a clear or colored material such as PVC (polyvinyl chloride) to protect the wire and inner hose from the elements and chemicals, to protect the vehicle