GALVANIC SERIES OF METAL IN MILLIVOLTS
(IN MODERATELY CORROSIVE SOILS) MPTAI Q MC 1 ALO
Duratron Sacrificial Nuts are made from a
special high-grade zinc (99.99% pure), con forming to ASTM Standard B-418, Type II. They are suitable forsoil or water. Each nut has a fusion-bonded inner steel core, ensuring solid contact between bolts and fittings and allowing high-torquing of the nut.
MILLIVOLTS Cu/CuS04
MAGNESIUM
17
1,650
ZINC
24
1,100^--i
ALUMINUM
Sac-Nut specifications
CORR. RATE LBS/AMP/YR
7
1,000 950
1 1
GALV. STEEL
22
STEEL
21
700
DUCTILE IRON
20
600
CAST IRON
19
550"^—
LEAD
70
500
BRASS
25
400
STAINLESS-P
20
300
IRON-CEMENT
20
250
COPPER
45
200
1
-
(MV) +
Cu/CuS04
Zinc Specifications for Underground Use ASTM B418 - Type II
REP
0.00
Further technical details on Sac-Nuts and
copies of the Cathodic Protection Design Manuals are available from Duratron Systems.
Aluminum
0.005% maximum
Cadmium
0.003% maximum
Iron
0.0014% maximum
*Refer to the National Association of Corrosion Engineers
Zinc
Remainder
(NACE) Standard RP-01-69 for criteria on protecting iron and steel structures.
Also available - Duratron Sac-Washers
Sacrificial zinc washers - avaiiabie in sizes from 5/8 in. to 1 1/4 in.
Buratron SYSTEMS LIMITED 75 Nugget Avenue SCARBOROUGH, ONT. Ml S 381 (416)-299-4370
Patent Canada 1985
Ask about our other products and services: • Pipe Video Analysis • Sacrificial Washers - Nuts
• Buttress Log Pipe Systems • Sewer Rehabilitation
• Corrosion Surveys • Feasibility Reports and Budgets
• Intake Structures and Diffusers • Anodes and Accessories
Circle reply card No. 109
Patent U.S.A. 1987