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Glossary of Terms

Expanded Metal



EXPANDING An expanding press simultaneously slits and stretches base material to form a diamond pattern.

LEVELLING Expanded metal is usually levelled after the expansion process by a levelling roller.

RAISED (appreviated R) Expanded metal as it comes from the press. The strands and bonds are set at a uniform angle to the plane of the sheet. This gives added strength and rigidity, as well as a skidding resistant surface.

FLATTENED (abbreviated F) Expanded metal that has been cold-rolled after expansion, to provide a smooth, flat and level sheet. The flattening process reduces the original gauge of the base metal and the strand width increases slightly. Some of the heavier expanded metals cannot be flattened.

SWD Nominal dimension, Short Way of Design

LWD Nominal dimension, Long Way of Design.

When referring to a sheet size the SWD is always referred to before the LWD. For example a 4x8 sheet means 4 foot dimension is in the SWD direction and 8 foot dimensions is in the LWD direction.

SWO Short Way of Opening

LWO Long Way of Opening

STRAND THICKNESS Gauge thickness of the base metal.

STRAND WIDTH Amount of metal fed under dies to produce one strand.

EDGE CONFIGURATION Condition of the edge of an expanded metal sheet. Usually refers to open (random) or closed (bond) diamond edges produced from shearing.

SHEARING Cutting expanded metal to size to produce various sheet sizes. May be bond or random sheared.

In bond shearing, the shear line falls through the bonds. The result is an edge configuration of all closed diamonds. For bond shearing the resultant dimensions must be in a multiple of the full diamond dimensions.

In random shearing, the shear line falls at random points on the mesh pattern. Edges are open and diamonds are not matched. Random shearing is necessary when the required overall dimensions are not a multiple of the full diamond dimensions.

Style Lbs. per 100 Sq. ft. Standard Sheet Size (ft.) Design Size (inches) Opening Size (inches) Strand Size (inches) Overall Thick-ness (in.) No. of Disigns per ft. (%) Open Area
Width Length
SWD LWD SWD LWD SWO LWO Width Thick-ness SWD LWD

STANDARD

1/4#20

86

4

8

.250

1.00

.125

.718

.072

.036

.135

48

12

45

1/4#18

114

4

8

.250

1.00

.110

.718

.072

.048

.147

48

12

43

1/2#20

43

4

8

.500

1.00

.438

.938

.072

.036

.140

24

10

80

1/2#40 (18 ga.)

40

4

8

.500

1.20

.440

.938

.051

.048

.110

24

10

82

1/2#18

70

4&6

8&10

.500

1.20

.438

.938

.088

.048

.172

24

10

72

1/2#16

86

4&6

8&10

.500

1.00

.375

.938

.087

.060

.175

24

10

65

1/2#13

147

4&6

8&10

.500

1.20

.312

.938

.096

.092

.204

24

10

57

3/4#16

54

4&6

8&10

.923

2.00

.813

1.750

.101

.060

.210

13

6

78

3/4#13

80

4&6

8&10

.923

2.00

.750

1.688

.096

.092

.205

13

6

76

3/4#10 (13 ga.)

120

4&6

8&10

.923

2.00

.750

1.625

.144

.092

.290

13

6

72

3/4#9 (10 ga.)

180

4&6

8&10

.923

2.00

.688

1.562

.150

.134

.312

13

6

68

1#16

44

4

8

1.00

2.40

.938

2.062

.087

.060

.192

12

5

82

1 1/2#18

20

4

8

1.33

3.00

1.313

2.625

.068

.048

.140

9

4

90

1 1/2#16

40

4

8

1.33

3.00

1.250

2.625

.108

.060

.230

9

4

85

1 1/2#13

60

4&6

8&10

1.33

3.00

1.188

2.500

.105

.092

.242

9

4

85

1 1/2''#10 (13 ga.)

79

4&6

8&10

1.33

3.00

1.188

2.500

.138

.092

.284

9

4

80

1 1/2#9 (10 ga.)

120

4&6

8&10

1.33

3.00

1.125

2.375

.144

.134

.312

9

4

76

1 1/2#6 (6ga.)

250

4&6

8

1.33

3.00

1.110

2.313

.203

.198

.433

9

4

69

2#10 (13 ga.)

68

6

12

1.85

4.00

1.625

3.438

.164

.092

.327

6.5

3

82

2# 9 (10 ga.)

90

4

8

1.85

4.00

1.563

3.375

.149

.134

.312

6.5

3

84




Style Lbs. per 100 Sq. ft. Standard Sheet Size (ft.) Design Size (inches) Opening Size (inches) Strand Size (inches) Overall Thick-ness (in.) No. of Disigns per ft. (%) Open Area
Width Length
SWD LWD SWD LWD SWO LWO Width Thick-ness SWD LWD

Flattened

1/4''#20

82

3&4

8

.250

1.05

.084

.715

.079

.030

.030

48

11.60

35

1/4#18

108

3&4

8

.250

1.05

.075

.715

.080

.040

.040

48

11.60

35

1/2#20

40

384

8

.500

1.25

.375

1.00

.079

.029

.029

24

9.500

65

1/2#40 (18 ga.)

38

4

8

.500

1.25

.380

1.00

.056

.040

.040

24

9.500

77

1/2#18

66

3&4

88.10

.500

1.25

.312

1.00

.097

.039

.039

24

9.500

60

1/2----#16

82

3&4

88,10

.500

1.25

.312

1.00

.096

.050

.050

24

9.500

63

1/2#13

140

384

88,10

.500

1.25

.265

1.00

.107

.070

.070

24

9.500

52

3/4#16

51

384

88,10

.923

2.10

.750

1.750

.111

.048

.048

13

5.700

74

3/4''#14

63

384

88,10

.923

2.10

.688

1.813

.105

.061

.061

13

5.700

74

3/4''#13

75

384

8,108,12

.923

2.10

.688

1.781

.106

.070

.070

13

5.700

74

3/4''#10 (13 ga.)

114

4

8

.923

2.10

.637

1.755

.160

.070

.070

13

5.700

68

3/4''#9 (10 ga.)

171

384

8,108,12

.923

2.10

.563

1.688

.165

.120

.120

13

5.700

63

1#16

41

384

8

1.00

2.50

.813

2.250

.098

.050

.050

12

4.684

78

1 1/2#16 (Lt.)

29

4

8

1.33

3.20

1.175

2.620

.093

.050

.050

9

3.75

83

1 1/2#16

38

384

8

1.33

3.20

1.062

2.750

.119

.048

.048

9

3.75

83

1 1/2#14

46

384

8

1.33

3.20

1.062

2.750

.134

.060

.060

9

3.75

80

1 1/2#13

57

38(4

8&10

1.33

3.20

1.062

2.750

.116

.070

.070

9

3.75

80

1 1/2 #9 (10 ga.)

114

38,4-4

88,10,12

1.33

3.20

1.0

2.563

.158

.110

.110

9

3.75

75

Above material conforms to military specification MIL-M-17194C Type II Class 1 Weights, gauges, dimensions, and sizes listed above are approximate.

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