Specifications of Electroformed Sheet

Home > OKUTANI WIRE NETTING,MFG,CO.,LTD. > Woven Wire Cloth > Specifications of Sieves of Electroformed Sheet

Unit: mm

Opening Size and Pitch of Sieves (Square Holes)
Nominal Size			Opening Size (W)			Pitch (P) (ISO)			Sheet Thickness (ISO)
principal sizes (opening)	supplementary sizes		Standard Size	Tolerance		Recommended Value	Tolerance		Recommended Value (for reference)
principal sizes (opening)	R40/3 series	R20 series (for reference)	Standard Size	(±)	Maximum(for reference)	Recommended Value	Maximum	Minimum	Recommended Value (for reference)
500	500	500	500	6.5	18	620	710	530	50
		450				560	645	475	50
	425		425	5.5	15	530	610	450	45
		400				490	555	425	45
355	355	355	355	4.6	13	450	510	380	30
		315				395	480	335	30
	300		300	3.9	11	380	440	320	30
		280				355	420	300	30
250	250	250	250	3.3	9	320	385	270	30
		224				275	340	250	30
	212		212	2.8	8	270	320	240	25
		200				260	305	225	25
180	180	180	180	2.3	6	240	270	200	25
		160				210	255	180	20~25
	150		150	2.0	5	200	230	170	20~25
		140				190	230	160	20~25
125	125	125	125	2.0	5	170	205	140	20~25
		112				155	205	135	15~25
	106		106	2.0	5	150	205	130	15~25
		100				140	170	120	15~25
90	90	90	90	2.0	5	130	170	110	15~25
		80				115	170	100	15~25
	75		75	2.0	5	110	140	95	12~25
		71				105	140	90	12~25
63	63	63	63	2.0	5	95	140	90	12~25
		56				90	140	75	12~25
	53		53	2.0	5	85	100	70	12~25
		50				80	100	70	12~25
45	45	45	45	2.0	4	75	100	65	12~25
		40				70	90	60	12~25
	38		38	2.0	4	65	85	55	12~25
		36				65	85	55	12~25
32			32	2.0	4	60	85	50	10~25
25			25	2.0	4	50	65	45	10~25
20			20	2.0	4	45	65	40	10~25
16			16	2.0	4	40	65	35	10~25
10			10	2.0	4	30	50	25	10~25
5			5	2.0	4	25	40	20	8~25

Relation between Mesh and Opening
Mesh (LPI)	Hole (square only) (μm)	Open Area Void Fraction (approx. %)	Mesh (LPI)	Hole (square only) (μm)	Open Area Void Fraction (%)	Mesh (LPI)	Hole (square only) (μm)	Open Area Void Fraction (approx. %)
1000	5	3.9	200	63	24.6	80	212	44.6
750	5	2.2		65	26.2		213	45
750	10	8.7		75	34.9		227	51
670	10	7		85	44.8		250	62
	15	15.6	150	85	25.3	60	255	36.3
	16	17.8		90	28.3		271	41
500	10	3.9		97	33		300	50.3
	15	8.7		106	39		302	51
	16	9.9		125	54.7		355	70.4
	20	15.5	125	107	27.8	50	322	40.2
	25	24.2		125	38		355	48.8
400	30	22.3		150	54.6		384	57.1
	32	25.4	120	116	30	45	425	56.8
	38	35.8		125	34.8	45	455	65
333	38	24.8		127	35.9	30	500	34.8
	41	28.9	110	139	36	30	600	50
	45	34.8		150	42	25	600	35
250	45	19.6		151	42.7	25	710	48.8
	49	23.2	100	165	42.2	20	850	44.8
	53	27.2	100	180	50	14.5	1000	32.6
	57	31.5	90	180	40.7
	63	38.4		181	41.2
	65	41		197	48.8

Meshes and openings not listed are also available.
Electroformed seives with holes from 1720 to 2 μm have been produced.