Q: What Types of Metals Are Used to Make Exhaust Systems?

asked byonNovember 25, 2015

What types of metals are used to make exhaust systems?

Chances are good that your exhaust system is made from 400-series steel. Cast iron is used for the exhaust manifold (stock). Aluminized steel is often used in aftermarket exhaust systems. In addition, a wide range of other metals can be added to the mix as alloys to provide greater strength or耐腐蚀性能取决于所讨论的排气类型。

为了使车辆具有竞争力,特定应用和符合法规的价格,现代汽车排气系统的设计,开发和制造是规定的。由于保修要求和法规合规的增加,排气系统的材料选择起着至关重要的作用。

Exhaust system materials should possess high temperature oxidation resistance, thermo mechanical vibration resistance, external salt corrosion resistance and internal acid/base corrosion resistances.

排气系统中主要使用的材料是铸铁,不锈钢,低碳钢 /碳钢。重量轻概念,降低成本和更好的性能的最新趋势已导致使用钣金。如今,不锈钢用于灵活的波纹管,催化转化器,谐振器,消音器,管道。碳钢 /碳钢用于法兰,管道和消音器。

不锈钢开始是汽车装饰装饰的材料。但是,近年来,它主要用作排气系统的材料。排气系统的组件已经从传统的铸造金属和铝制碳钢板变为不锈钢,从通用的不锈钢到特种不锈钢,具有更高的性能。这是由于不锈钢良好的性能和高温,高腐蚀性和外观的特征,同时满足了对清洁排气气的现代需求,并减轻了重量,从而获得更好的燃油经济性。

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