PDuarte - Comércio e Representação de Redes


Plain	Twilled	Plain Dutch	DutchTwilled

a
Mesh 25.4	a	a	3	a	a	4	a	a	a	5	a	a	6	6	a	a	7	a	a	8	a	9	a
Num.27.77	2	3	a	4	4	a	5	5	5	a	6	6	a	a	7	7	a	8	8	a	9	a	10
d	1.60	1.30	1.25	0.80	1.10	1.20	0.70	0.90	1.00	1.00	0.65	0.90	0.71	0.90	0.60	0.80	0.80	0.55	0.70	0.80	0.70	0.71	0.44
w	12.28	7.90	7.217	6.15	5.84	5.150	4.85	4.65	4.55	4.00	3.97	3.72	3.55	3.35	3.36	3.16	2.80	2.92	2.77	2.375	2.38	2.11	2.34
s%	79	74	73	79	71	66	76	70	67	64	74	65	69	62	72	64	60	71	64	56	60	56	71
kg/m2	2.31	2.32	2.37	1.17	2.21	2.91	1.12	1.85	2.30	2.50	1.16	2.22	1.50	2.42	1.15	2.05	2.26	1.11	1.79	2.59	2.01	2.26	0.88

a
Mesh 25.4	a	10	a	a	12	a	a	14	a	a	16	a	a	18	a	a	20	20				25	25
Num.27.77	10	a	12	12	a	14	14	a	16	16	a	18	18	a	20	20	a	a	25	25	25	a	a
d	0.60	0.60	0.40	0.50	0.50	0.36	0.50	0.50	0.30	0.44	0.44	0.28	0.42	0.42	0.25	0.40	0.40	0.50	0.24	0.28	0.36	0.25	0.32
w	2.18	1.94	1.91	1.81	1.60	1.62	1.48	1.31	1.43	1.30	1.15	1.26	1.12	0.99	1.14	0.99	0.90	0.77	0.87	0.83	0.751	0.75	0.71
s%	61	58	68	61	58	67	56	53	79	74	72	79	71	68	76	70	67	64	74	65	46	62	72
kg/m2	1.67	1.80	0.88	1.37	1.51	0.83	1.60	1.75	2.31	2.32	2.53	1.17	2.21	2.42	1.12	1.85	2.30	2.50	1.16	2.22	1.50	2.42	1.15

a
Mesh 25.4	a	30	a	30	a	a	35	36	a	a	a	40	40	a	a	a	50	a	a	a	a	60	a	a
Num.27.77	30	a	30	a	35	35	a		40	40	40	a	a	45	50	50	a	55	60	60	65	65	70	70
d	0.32	0.22	0.30	0.30	0.20	0.28	0.22	0.16	0.16	0.18	0.24	0.22	0.24	0.15	0.16	0.20	0.20	0.14	0.12	0.17	0.12	0.17	0.12	0.16
w	0.606	0.63	0.62	0.55	0.59	0.51	0.50	0.546	0.53	0.51	0.44	0.41	0.39	0.46	0.39	0.35	0.30	0.36	0.34	0.29	0.30	0.25	0.27	0.237
s%	43	60	71	64	61	60	56	60	71	61	58	68	61	58	67	56	53	52	55	40	52	36	49	36
kg/m2	1.42	2.26	1.11	1.79	1.99	2.01	2.26	0.47	0.88	1.67	1.80	0.88	1.37	1.51	0.83	1.60	1.75	0.49	0.39	0.79	0.43	0.86	0.46	0.83

a
Mesh 25.4	70	a	a	80	a	a	a	a	100	a	100	a	a	120	a	145	165	a	180	200	a	325	a
Num.27.77	a	80	80	a	90	90	100	100	a	110	110	120	120	130	140	160	180	200	200	220	250	350	400
d	0.15	0.10	0.14	0.13	0.09	0.12	0.08	0.11	0.11	0.08	0.10	0.07	0.09	0.08	0.08	0.06	0.05	0.04	0.05	0.05	0.035	0.035	0.028
w	0.21	0.24	0.207	0.18	0.21	0.18	0.19	0.16	0.14	0.17	0.15	0.16	0.14	0.13	0.118	0.11	0.10	0.09	0.08	0.07	0.07	0.04	0.04
s%	34	50	36	35	50	37	50	36	32	46	36	48	37	39	36	43	46	51	41	36	47	30	35
kg/m2	0.79	0.36	0.72	0.68	0.33	0.59	0.29	0.55	0.61	0.32	0.50	0.27	0.44	0.39	0.41	0.26	0.20	0.15	0.23	0.25	0.14	0.20A/T	0.14A/T

Definition and general features

d: Wire diameter in mm.
w: Mesh opening. Distance in mm between two adjacent wires. Besides the material of the wire used and type of cloth, somo other features stated on the table:
s%: Working surface. Approximate percentage of the total surface of the openings of a mesh.
    S = 100w²/(w+d)²
Kg/m²: Approximate weight in Kg of a m² of an iron/steel woven wire cloth. (See the conversion factor table for other materials).
Num: Mesh number. It is the quantity of mesh openings in a given length unit. The woven wire cloth is formally defined by parameters w and d, so this information is merely a guidance to give a simple description of the mesh. But it is included here in since it is still widely used in two different versions, calculated as follows:
    Mesh 25,4: 25,4/(w+d)
    Num 27,77: 27,77/(w+d)

Densities and conversion factors
Material	Kg/m³	FC
Iron/Steel	7,850	1.000
Stainless Steel	7,930	1.010
Aluminium	2,700	0.343
Copper	8,900	1.134
Brass (CuZn₃₇)	8,450	1.076
Brass (CuZn₂₀)	8,650	1.102
Phosphor bronze (CuSn₆)	8,800	1.121
Monel Alloy 400	8,810	1.122

Dutch weave
Mesh 25.4	Going through (m^-6)	d (mm)	Kg/m²
12 x 64 L/P	350	0.58-0.43	4.01
12 x 64 L/P	280-300	0.61-0.41	3.90
24 x 110 L/P	112-125	0.36-0.26	2.70
30 x 150 L/P	98-105	0.23-0.18	1.65
40 x 200 L/P	75-80	0.18-0.14	1.35
50 x 250 L/P	60-65	0.14-0.12	1.20
60 x 570 A/T	50-55	0.17-0.10	1.85
80 x 700 A/T	35-40	0.10-0.08	1.32

Multiply the weight given in the general table by the FC coefficient to get the approximate weight in kg/m² for the stated materials.

L/P: Plain cloth
A/T: Twilled cloth



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