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

MaterialsSINTERED BRONZESINTERED STAINLESS STEEL
Tensile strength21-28 MPa10-180 MPa
Density (g/cc)4.5-5.6 (51-64%)5.2-5.8 (67-72%)
Oxidising temp200C530C
Max operating temp480C800C
Chemical composition89-96% Cu, bal. Sn316L (18Cr, 8Ni, 2Mo)

Standard Porosity Gradesa

GradeMaterialParticle Removal size (Microns)Bubble Pointb (in. water) Pressure Dropc (PSI for 1 CFM/in air)Maximum Pore Size (Microns)
F30Bronze65-1101.10.04-0.07200-300
F40Bronze50-701.70.07-0.17150-210
F60Bronze30-452.90.12-0.2690-130
F100Bronze15-256.10.43-0.945-72
FCR25Stainless15-256.12-856-65
FCR510Stainless5-1511.74-1230-35
FCR1020Stainless5131515
FCR2027Stainless2252110
FCR2030Stainless0.530285
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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