Surface Cleanliness Standards – Maden Industrial Ltd.

Summary Table of Surface Cleanliness Standards

SSPC Designation	NACE Designation	ISO Designation	Title	What Must Be Removed	What Can Remain
SSPC-SP1	None	N/A	Solvent Cleaning¹	Grease and oil contamination	No visible grease & oil
SSPC-SP2	None	N/A	Hand Tool Cleaning	Loosely adhering materials	Tightly adhering materials
SSPC-SP3	None	N/A	Power Tool Cleaning	Loosely adhering materials	Tightly adhering materials
SSPC-SP4	None	N/A	Discontinued	N/A	N/A
SSPC-SP5	NACE 1	Sa 3	White Metal Blast	All mill scale, rust & paint	Nothing
SSPC-SP6	NACE 3	Sa 2	Commercial Blast	All mill scale, rust & paint	Up to 33% stains³
SSPC-SP7	NACE 4	Sa 1	Brush-off Blast	Loosely adhering materials	Tightly adhering materials
SSPC-SP8	None	N/A	Pickling	Grease, oil, dirt, mill scale and rust	Nothing
SSPC-SP9	None	N/A	Discontinued	N/A	N/A
SSPC-SP10	NACE 2	Sa 2 1/2	Near-White Blast Cleaning	All mill scale, rust & paint	Up to 5% stains³
SSPC-SP11	None	N/A	Power Tool Cleaning To Bare Metal	All mill scale, rust & paint	Nothing ⁴ . Must minimum 1 mil profile
SSPC-SP12	NACE 5	N/A	High & Ultra-High Pressure Water Jetting	Variable, depending on level (WJ1, WJ2, WJ4)	Variable, depending on level (WJ1, WJ2, WJ3, WJ4)
SSPC-SP13	NACE 6	N/A	Preparation of Concrete	N/A	N/A
SSPC-SP14	NACE 8	N/A	Industrial Blast	Loosely adhering materials	Up to 10% intact rust, paint or mil scale. Stains on remaining surface permitted^2,3
SSPC-SP15	None	N/A	Commercial Grade Power Tool Cleaning	All mill scale, rust & paint	Up to 33% stains ^3,4 . Must have minimum 1 mil profile

¹ Prerequisite to all methods of surface preparation if deposits are visibly present.
² Remaining materials considered tight if they cannot be loosened with a dull putty knife.
³ Unit of surface area is 9 square inches.
⁴ Slight residues from pain and rust can remain in the bottom of the pits of the original surface is pitted.