ASTM A967 Passivation

Specification Overview

ASTM A967 covers seven different chemical treatments for passivating stainless steel. It is a widely adopted standard across aerospace, pharmaceutical, and food-processing industries to ensure removal of free iron and formation of a corrosion-resistant passive layer.

• Citric or nitric acid-based passivation methods
• Suitable for 200, 300, and 400 series stainless steels
• Salt spray, copper sulfate, and high humidity testing available
• Does not change part dimensions or surface finish

Applications & Benefits

• Surgical instruments and implantable devices
• Aerospace hardware and tubing systems
• Semiconductor processing tools
• Sanitary and food-grade fittings

Why AMPC?

• Validated ASTM A967-compliant bath chemistries
• Multiple process lines for nitric and citric options
• Full inspection and passivation verification test reports
• Cleanroom-compatible and RO/DI final rinse available