Passivation Services per ACMI SP-112

Passivation Specifications Thank you for visiting the Advanced Plating Technologies Specification Database. Below is a technical summary of specification SP-112 from ACMI for Passivation. For more information on our full line of Passivation services please visit our passivation of stainless steel page. You can also request a quote or contact a member of our technical sales team for more information.

Revision: F
Finish: Passivation
Company: ACMI
Application: Passivation for Free Machining Stainless Steels: (Includes AISI Types 303, 416, 420F, 430F, and 440F)
Appearance: Varies
Plate Thickness: 5% sodium hydroxide, hot water rinse, 20% nitric acid and 2% sodium dichromate, water rinse, 5% sodium hydroxide, water rinse
Strike Thickness: 30 mins at 160-180 degrees F (NaOH), hot water rinse at 180 degrees F, 30 mins at 120-140 degrees F (nitric), water rinse, 30 mins at 160-180 degrees F (NaOH)
Notes: This process is AAA treatment for free machining stainless steel. APT has developed the best AAA process in the industry. For more information, visit our passivation page on our website.

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