Passivation Agent For Martensitic Stainless Steel


The product needs to be used with a coordination agent to improve corrosion resistance of martensitic stainless steel (SUS400) by 8~50 times. It won’t change the size and color of materials.

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Passivation Agent For Free Cutting Steel



Product Name : Passivation solution for
martensitic stainless steel
Packing Specs : 25KG/Drum
PH Value : 1.3~1.85 Specific Gravity : 1.12土0.03
Dilution Ratio : Undeluted solution Solubility in water : All dissolved
Storage : Ventilated and dry place Shelf Life : 12 months


The product needs to be used with a coordination agent to improve corrosion resistance of martensitic stainless steel (SUS400) by 8~50 times. It won't change the size and color of materials.

When passivating martensitic stainless steels, citric acid is generally preferred over other passivating agents such as nitric acid for a number of reasons. Citric acid is milder and less harmful, making it more environmentally friendly and safer to use. It also provides excellent passivation for martensitic stainless steels.

Item: Passivation Agent For Martensitic Stainless Steel
Model Number: ID4000
Brand Name: EST Chemical Group
Place of Origin: Guangdong, China
Appearance: Bright brown liquid
Specification: 25Kg/Piece
Mode of Operation: Soak
Immersion Time: 30 mins
Operating Temperature: 60~75℃
Hazardous Chemicals: No
Grade Standard: Industrial grade


Q1: What’s your company’s core bussiness?
A1: EST Chemical Group, founded in 2008, is a manufacturing enterprise mainly engaged in the research, manufacture and sales of rust remover, passivation agent and electrolytic polishing liquid. We aim to provide better service and cost-effective products to global cooperative enterprises.

Q2: Why choose us?
A2: EST Chemical Group has been focusing on the industry for more than 10 years. Our company is leading the world in the fields of metal passivation, rust remover and electrolytic polishing liquid with a large research & development center. We provide environmentally friendly products with simple operation procedures and guaranteed after-sale service to the world.

Q3: How do you guarantee the quality?
A3: Always provide pre-production samples before mass production and conduct final inspection before shipment.

Q4: What service can you provide?
A4: Professional operation guidance and 7/24 after-sale service.

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