1. 材质不同：钢质防火门采用的是镀锌钢板，外面加氧化保护层和抗紫外线涂层，不锈钢防火门采用不锈钢材质作为门框、门扇等。
Material is different: steel fire door using galvanized steel, the outside plus oxidation protection layer and anti-ultraviolet coating, stainless steel fire door using stainless steel as the door frame, door, etc.
2. 抗爆炸强度不同：钢质防火门在火灾高温环境下强度降低，如果发生爆炸事件，钢质防火门有可能被气流冲破，不锈钢防火门耐热，在高温条件下任然能够保持较高的强度和韧性，可以有效的防护爆炸等突发事件。
Different explosion strength: steel fire doors in the fire environment under high temperature strength reduction, if there is an explosion, steel fire doors are likely to be broken through the air, stainless steel fire doors heat resistance, in the high temperature conditions can maintain high strength and toughness, can effectively prevent the explosion and other emergencies.
3、使用寿命不同：钢质防火门用的是镀锌钢板，容易被空气中的氧化物腐蚀，使用寿命短，不锈钢防火门含镍、铬金属，抗腐蚀性能强，使用寿命长。
Different service life: steel fire door with galvanized steel, easy to be the oxide corrosion in the air, short service life, stainless steel fire door containing nickel, chromium metal, strong corrosion resistance, long service life.
4、应用领域不同：钢质防火门广泛用于医院、研发中心、政府楼、办公室等等。不锈钢防火门适用于各类工业建筑、住宅楼宇等防火要求比较高的场所。
Applications: steel fire doors are widely used in hospitals, research and development centers, government buildings, offices and so on. Stainless steel fire doors are suitable for all kinds of industrial buildings, residential buildings and other places with high fire requirements.
5、填充材质不同：钢质防火门一般用镁硅防火板作为填充物，不锈钢防火门一般用珍珠岩板作为填充物。
Fill material is different: steel fire door USES magnesium silicon fire prevention board to serve as filler commonly, stainless steel fire door USES perlite board to serve as filler commonly.

防火门的材质中间夹着一层“珍珠岩板,”或其他的防火材料，能够很好的隔绝火烧，从而防止火势蔓延。
The material of the fire door is sandwiched with a layer of "perlite board" or other fireproof material, which can well isolate the fire and prevent the fire from spreading.