Porous Sintered Metals

Porous Sintered Metals

We can offer you a complete range of custom-made filters for your specific porous metal applications. As well as the standard tin-bronze and 316 stainless steel materials, we can offer nickel bronze and also pure copper sinters. Post-sinter pressing can optionally be used to size your components to a high degree of accuracy. Additionally, a standard line of discs, tubes, sheets and threaded filter elements is available.

More about bronze sinters

More about stainless steel sinters

Porous Metal Filter Materials

Materials	SINTERED BRONZE	SINTERED STAINLESS STEEL
Tensile strength	21-28 MPa	10-180 MPa
Density (g/cc)	4.5-5.6 (51-64%)	5.2-5.8 (67-72%)
Oxidising temp	200^oC	530^oC
Max operating temp	480^oC	800^oC
Chemical composition	89-96% Cu, bal. Sn	316L (18Cr, 8Ni, 2Mo)

Standard Porosity Grades^a

Grade	Material	Particle Removal size (Microns)	Bubble Point^b (in. water)	Pressure Drop^c (PSI for 1 CFM/in² air)	Maximum Pore Size (Microns)
F30	Bronze	65-110	1.1	0.04-0.07	200-300
F40	Bronze	50-70	1.7	0.07-0.17	150-210
F60	Bronze	30-45	2.9	0.12-0.26	90-130
F100	Bronze	15-25	6.1	0.43-0.9	45-72
FCR25	Stainless	15-25	6.1	2-8	56-65
FCR510	Stainless	5-15	11.7	4-12	30-35
FCR1020	Stainless	5	13	15	15
FCR2027	Stainless	2	25	21	10
FCR2030	Stainless	0.5	30	28	5

^aOther grades available
^b Air pressure required on one side of a sample saturated in isopropyl alcohol to form air bubbles on the other side
^cActual Permeability controlled by part density

Here are some new specs for porous bronze which supercede those above. The tables show coarser and finer grades than those previously noted, and there is an even finer 5-micron filtration grade now available too. Further data will be added as it becomes available. Hopefully the data is consistent from the above table to the one following...

Filtration
Grade
(Microns)

Nearest old
Material
Designation

Filtration
Range
(Microns)

Tensile
Strength
(PSI)

Minimum
Thickness
(Inches)

250
150
90
40
30
20
10

F10
F20
F30
F40
F60
F100
F150

180-300
125-180
50-125
25-50
20-40
15-25
7-13

2,000
2,500
3,500
4,500
5,500
6,500
7,000

.187
.125
.093
.063
.063
.040
.035

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Filtration Grade (Microns)	Nearest old Material Designation	Filtration Range (Microns)	Tensile Strength (PSI)	Minimum Thickness (Inches)
250 150 90 40 30 20 10	F10 F20 F30 F40 F60 F100 F150	180-300 125-180 50-125 25-50 20-40 15-25 7-13	2,000 2,500 3,500 4,500 5,500 6,500 7,000	.187 .125 .093 .063 .063 .040 .035