1, corrosion resistance: titanium metal has high corrosion resistance, high strength, light weight, anti-allergic to human skin, suitable for aqua regia, chlorine, hydrochloric acid, nitric acid, sulfide, seawater corrosion resistance is better than stainless steel, more heat and cold resistance than stainless steel. Titanium alloy has excellent corrosion resistance and biocompatibility can be used in harsher environments. Stainless steel has good resistance to corrosion fatigue and wear and tear corrosion performance, high strength and fatigue strength, thermal cracking tendency is small, compared with austenitic stainless steel thermal conductivity, coefficient of linear expansion of the small plate, suitable for the manufacture of heat exchanger core.
2, strength and weight ratio: titanium alloy is lighter and stronger than stainless steel. Titanium alloy has higher strength, lower density, so usually used in the manufacture of high-strength parts and structures, while the weight is lighter. Stainless steel is relatively heavy, and relatively low strength.
3, production costs: titanium alloy is more expensive than stainless steel. Titanium alloy production and processing costs are high, because its manufacture requires higher temperatures and more advanced technology, but also requires more expensive materials. As a result, titanium alloys may be more suitable if they are to be used in harsh environments where high strength and lightweight materials are required. And when used in some low-strength, generally corrosive environments, stainless steel may be a better choice. Of course, it is necessary to make comprehensive consideration according to the actual situation and choose the most suitable material.
