A153

Zinc Coating for Various Classes of Material

A153

TABLE 1 Thickness or Weight [Mass] of Zinc Coating for Various Classes of Material.

NOTE 1- Length of the piece, stated in Classes B-1, B-2, and B-3, refers to the finished dimension of the piece after fabrication.

 

Class of Material

Weight [Mass] of Zinc Coating,
oz/ft2[g/m2] of Surface, Minimum
Coating Thickness, mils
[microns], Minimum
Average of
Specimens
Tested
Any
Individual
Specimen
Average of
Specimens
Tested
Any
Individual
Specimen
Class A-Castings-Malleable Iron, Steel 2.00 [610] 1.80 [550] 3.40 [86] 3.10 [79]
Class B-Rolled, pressed, and forged articles
(except those which would be included under Classes C and D):
       
B-1-3/16 in. [4.76 mm] and over in thickness and over 15 in. [381 mm] in length 2.00 [610] 1.80 [550] 3.40 [86] 3.10 [79]
B-2-under 3/6 in. [4.76 mm] in thickness and over 15 in. [381 mm] in length 1.50 [458] 1.25 [381] 2.60 [66] 2.10 [53]
B-3-any thickness and 15 in. [381 mm] and under in length 1.30 [397] 1.10 [336] 2.20 [56] 1.90 [48]
Class C-Fasteners over Mt in. [9.52 mm] in diameter
and similar articles. Washers 3/6 in. and 1/4 in. [4.76 and 6.35 mm] in thickness
1.25 [381] 1.00 [305] 2.10 [53] 1.70 [43]
Class D-Fasteners in. [9.52 mm] and under in diameter,
rivets, nails and similar articles. Washers under V16 in. [4.76 mm] in thickness
1.00 [305] 0.85 [259] 1.70 [43] 1.40 [36]

 

Sampling

Number of pieces in lot Sample Size
3 or less All
4 to 500 3
501 to 1200 5
1201 to 3200 8
3200 to 10000 13
10001 and over 20

 

Thickness or Weight of Zinc Coating for Various Classes

Class Description Minimum Average Coating Thickness, mils Minimum Coating Thickness, Any Individual Specimen, mils
Class A Castings, Malleable Iron, Steel 3.4 3.1
Class B Rolled, pressed, forged articles except those covered by Classes C and D See below B-1 through B-3 See below B-1 through B-3
Class B-1 3/16" and over in thickness and over 15" in length 3.4 3.1
Class B-2 Under 3/16" in thickness and over 15" in length 2.6 2.1
Class B-3 Any thickness and under 15" in length 2.2 1.9
Class C Fasteners over 3/8" in diameter and similar articles, washers 3/16" to 1/4" thick 2.1 1.7
Class D Fasteners 3/8" and under in diameter, rivets, nails and similar articles. Washers under 3/16" thick 1.7 1.4