Expand Metal

Expanded metal is a metal mesh formed by spreading a metal plate while making a staggered cut by a blade, and shaping the cut into diamond (Standard type) or hexagonal pattern (Grating type). Various materials are used, including iron, aluminum, stainless steel, nickel, and titanium.

Expanded metal is lightweight and has excellent post-processability. In addition, there are no mesh joints, and the applied load is dispersed. As a result, the tensile strength is strong. Taking advantage of this feature, expanded metal is used in a wide range of applications, including air vent windows in electrical equipment, acoustic equipment, firing trays for sintering process, machine covers, cable racks, fences, construction, and civil engineering materials.

Name of Each Part

Name of Each Part	Details
SW (Short Way of Diamond)	Center-to-center distance in the short dimension of the mesh
LW (Long Way of Diamond)	Center-to-center distance in the long dimension of the mesh
T (Thickness)	Plate thickness
W (Width)	Step Width (Feed Width)
Strand	Narrow portion of the mesh
Bond	Wide portion where the mesh intersects

Specifications of Expanded Metal

Standard type (JIS G3351)

Standard type have diamond-shaped meshes, and the bond part is short. It has an orderly mesh, strong impact resistance, and is used in a wide range of applications. In addition, it is often used for interior and exterior, etc. because of its beautiful appearance.

Material: Carbon steel

JIS Model Number	Mesh dimensions (mm)		Strand dimensions (mm)		Weight (kg/sheet) of standard size (mm)
JIS Model Number	SW	LW	T	W	1829 × 914	2438 × 1219
XS31	12	30.5	1.2	1.5	3.95	7.01
XS32	12	30.5	1.6	2.0	7.01	12.5
XS33	12	30.5	2.3	3.0	15.1	26.8
XS41	22	50.8	1.6	2.0	3.81	6.78
XS42	22	50.8	2.3	2.5	6.86	12.2
XS43	22	50.8	3.2	3.5	13.4	23.8
XS51	25	61.0	1.6	2.5	4.20	7.46
XS52	25	61.0	2.3	3.0	7.24	12.9
XS53	25	61.0	3.2	4.0	13.5	23.9
XS61	34	76.2	2.3	3.0	5.33	9.48
XS62	34	76.2	3.2	4.0	9.88	17.6
XS63	34	76.2	4.5	5.0	17.4	30.9
XS71	50	152.4	2.3	3.5	4.23	7.52
XS72	50	152.4	3.2	4.0	6.72	11.9
XS73	50	152.4	4.5	5.0	11.80	21.0

Grating type (JIS G3351)

Grating type have hexagonal pattern meshes, and its bond part is long. It is more robust compared to other types because of the standard on which people are assumed to ride. It has a high anti-slip effect and is often used in walkways and building materials.

Material: Carbon steel

JIS Model Number	Mesh dimensions (mm)		Strand dimensions (mm)		Weight (kg/m²)	Weight (kg/sheet) of standard size (mm)
JIS Model Number	SW	LW	T	W	Weight (kg/m²)	914 × 1829	1219 × 2438	1524 × 3048
XG11	34	135.4	4.5	7.0	14.5	24.2	43.1	67.4
XG12	34	135.4	6.0	7.0	19.4	32.4	57.7	90.1
XG13	34	135.4	6.0	9.0	24.9	41.6	74.0	116.0
XG14	34	135.4	8.0	9.0	33.2	55.5	98.7	154.0
XG21	36	101.6	4.5	7.0	13.7	22.9	40.7	63.6
XG22	36	101.6	6.0	7.0	18.3	30.6	54.4	85
XG23	36	101.6	6.0	9.0	23.6	39.5	70.1	110.0
XG24	36	101.6	8.0	9.0	31.4	52.5	93.3	146.0

Small mesh type of expanded metal

Small mesh type of expanded metal is thin, light and easy to process. Used in applications such as EMI shielding, ornaments, aircrafts, vehicles, electric appliances, chemical equipment, mechanical equipment, filters, etc.

Model number	Material	Mesh dimensions (mm)		Thickness of metal plate used				Standard size (mm)
Model number	Material	SWD	LWD	0.5	0.6	0.8	1.0	Standard size (mm)
Thickness × 2/3	Aluminum	2	3	〇				1000 × 1000
Thickness × 3/4.5		3	4.5	〇		〇		1000 × 1000
Thickness × 3/6		3	6	〇			〇	1000 × 1000
Thickness × 4/8		4	8	〇		〇		1000 × 1000
Thickness × 7/14		7	14	〇		〇	〇	1000 × 1000
Thickness × 9/20		9	20		〇	〇	〇	1000 × 1000
Thickness × 14/25		14	25			〇	〇	1000 × 1000
Thickness × 4/8	Stainless steel	4	8	〇				1000 × 1000
Thickness × 7/14		7	14	〇	〇	〇	〇	1000 × 1000
Thickness × 9/20		9	20		〇	〇	〇	1000 × 1000
Thickness × 2/3	Iron	2	3	〇				914 × 914
Thickness × 3/4.5		3	4.5	〇				914 × 914
Thickness × 3/6		3	6	〇				914 × 914
Thickness × 4/8		4	8	〇		〇		914 × 914
Thickness × 5.3/14		5.3	14		〇	〇	〇	914 × 914
Thickness × 7/14		7	14			〇	〇	914 × 914
Thickness × 9/20		9	20				〇	914 × 914

Shearing for Expanded Metal (Bond Shearing and Random Shearing)

Bond shearing

Shearing at the bond section to match the mesh

Random Shearing

Shearing at strand section

Mesh direction of the Expanded Metal

Short-Long type

The long side of diamond (LW) runs parallel to the shorter dimension of the expanded metal sheet

Long-Long type

The Long side of diamond (LW) runs parallel to the long dimension of the expanded metal sheet

Flat processing of expanded metals

Expanded metal features raised surfaces, but this may be a disadvantage for some applications. In order to cope with this problem, roller machining is possible so that entire mesh is flat.

Comparison of expanded metal, perforated metal, and wire mesh

	Expanded Metal	Perforated Metal	Wire Mesh
Material	Sheet materials	Sheet materials	Wire materials
Manufacturing method	Cutting and Stretching	Punching	Weaving
Shape of the aperture	Diamond or hexagonal	Round hole, square hole, long round hole, long square hole, etc.	Rectangle or rectangle
Abundance of mesh types	〇	〇	◎
Low manufacturing loss	〇	△ The punched part will be losses	〇

Precision expanded metals for new enery applications

We also offer precision expanded metals for new energy applications.

Main Materials of Precision Expanded Metal for New Energy:
Aluminum, brass, copper, monale, nickel, silver, tin, stainless steel, titanium, niobium, etc.

Application example:
• Current collectors for rechargeable batteries
• Fuel cell MEA support
• Gas diffusion electrode
• Various Electrodes (Electrolysis)
• Filter/gas rectifier
• For electromagnetic noise suppression
• Fan guard (ventilation hole), etc.

If you have any requests regarding expanded metal, please feel free to consult us.

Precision expanded metals for new enery applications

Wire Cloth & Metal Parts Product Group

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