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Applicable to the native passivation of martensitic and ferritic stainless steel materials (e.g. 410, 416, 420, 420J2, 420F, 430, 440, 440C, 630, 631, 17-4, 1Cr17, 1Cr13, 2Cr13. 3Cr13, 4Cr13, etc.).
● It is used as a substitute for antirust oil, grease and other antirust methods to form a dense, dry passivation film on the surface of the workpiece.
● Stainless steel passivation solution is simple to operate, easy to use, economical and practical; no need for complex equipment.
● Passivation does not change the surface appearance, color, luster, size, etc. of the workpiece.
● Corrosion resistance is improved by 5-20 times, which meets or even exceeds the relevant standards of JIS, ASTM, GB, etc. (According to the ISO
9227 salt spray test standard, the highest neutral salt spray test is more than 500h, and because of the different characteristics of the materials, the corrosion prevention effect may vary).
● Passivation film breakdown potential than untreated time can be increased by several hundred millivolts; and can pass the national unified provisions of the "blue dot method" test, 35 seconds without blue dot.
● Environmentally friendly, no chromium, no irritating odor, safe operation; in line with RoHS and the latest EU REACH specifications.
Shenzhen passivation technology case sharing:
Material: Fine cast stainless steel
Process solution ：
1、Cleaning(SanLy 222H)
2、Rinsing
3、Passivation(DunHua 400A)
4、Rinsing
5、Stabilization(DunHua 401A)
6, Neutralization
7, Rinsing
8, Drying
Test results: Neutral salt spray test up to 168h class 10.
Please search "passivation technology" in Baidu for detailed information, thank you!