汽车排气管是不锈钢还是铁?

2025-03-30 04:06:58
推荐回答(5个)
回答1:

一般来说,大部分汽车的排气管外壳都是不锈钢材料的。不锈钢排气管最好用409L不锈钢,409L耐热不锈钢的特点及优点
409L不锈钢对腐蚀、高温疲劳的抵抗性强,可实现排气系统部件的寿命化和轻量化。
409L抗高温性强,可实现高效率的发动机及排气系统,并减少排气系统的厚度,可减少废气的排放。
409L成本低廉,柔韧性好,成材率高,容易更换,属于环保性新产品。
409L不锈钢具有优良的耐腐蚀性,适合于延长汽车寿命和汽车的轻量化,且作为可回收再利用的环保材料,GM、Ford、Volkswagen、DaimlerChrysler等主要汽车厂商在排气系统方面100%采用不锈钢。佛山罡正不锈钢为你解答


回答2:

现在做汽车排气管的一般是使用不锈钢管的,然而不是所有材质的不锈钢都适合做汽车排气管的。如果不了解是201不锈钢管、304不锈钢管还是316不锈钢管还是别的材质适合制作汽 201不锈钢管的耐腐蚀和耐高温性能比较低,所以不是最适合的。而409材质的不锈钢是最廉价的不锈钢材质,是一种铁素的不锈钢,抗氧性能极低,所以也不适合。而301不锈钢管和304不锈钢管都是耐高温的材质。但是304不锈钢管含镍要比301不锈钢管含镍高,耐腐蚀性能要比301不锈钢管好。还有一种是316不锈钢管,但是316不锈钢管很贵。综合比较,汽车大多数是304不锈钢管排气管。

回答3:

1)铁素体不锈钢不含或者少含贵金属Ni,原料成本低廉;
2)铁素体不锈钢热膨胀系数小,热导率高,在反复加热和冷却的条件下耐高温氧化性能好,而且具有良好的抗点腐蚀性;
3)与奥氏体不锈钢相比,铁素体不锈钢具有良好的耐氯化物、应力腐蚀和晶间腐蚀性能;

4)Nb、Ti稳定化处理的铁素体不锈钢具有优良的抗蠕变性能;
5)铁素体不锈钢在冷成形时回弹性小。

回答4:

不锈钢409L是低碳409钢,中国标牌号:00Cr11Ti
409L不锈钢板介绍:
不锈钢409L是应用最为广泛的一种铬-镍不锈钢,具有良好的耐蚀性、耐热性、低温强度和机械特性。在大气中耐腐蚀, 如果是工业性气氛或重污染地区,则需要及时清洁以避免腐蚀。适合用于食品的加工、储存和运输。 具有良好的加工性能和可焊性。板式换热器、波纹管、家庭用品、建材、化学、食品工业等。
409L不锈钢板基本概述按制法分热轧和冷轧的两种,按钢种的组织特征分为5类:奥氏体型、奥氏体-铁素体型、铁素体型、马氏体型、沉淀硬化型。要求能承受草酸、硫酸-硫酸铁、硝酸、硝酸-氢氟酸、硫酸-硫酸铜、磷酸、甲酸、乙酸等各种酸的腐蚀,广泛用于化工、食品、医药、造纸、石油、原子能等工业,以及建筑、厨具、餐具、车辆、家用电器各类零部件。
409L不锈钢板化学成份
规格 C Si Mn P S Cr Ni(镍) Mo
SUS304 ≤0.08 ≤1.00 ≤2.00 ≤0.05 ≤0.03 18.00-20.00 8.25~10.50 -

回答5:

排气管是钢管,有的车在尾管头加装白钢或电镀的管头,起装饰作用。

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