Stainless steel filter discs and rings: Material characteristics

AISI 316L or AISI 316 stainless steel filters made by uniaxial compaction

The material used to produce these filters is AISI 316L or AISI 316 stainless steel. They are made by uniaxial compaction of powder in a rigid tool with the negative shape of the part, and then sintered. The pore size is adjusted by changing the compaction pressure and/or the particle size of the powder.

Material Chemical composition Other characteristics
Sintered austenitic AISI 316L
or AISI 316L stainless steel
Cr: 16-18%
Ni: 11-14%
Mo: 2-3%
C: < 0,03%
Others: 2% max.,
Fe: Rest
Suitable for strongly oxidizing environments.
Suitable for contact with food or sanitary water.

Maximum working temperature: 600°C in an oxidizing atmosphere,
850°C in a reducing atmosphere.

Coefficient of linear expansion: ≈12·10-6 K-1

Grade1 Total
Porosity (%)
Pore Size (μm)2 Filtering efficiency4
(T=98%) (μm)
Permeability5 Shear
Strength (MPa)
Average Maximum3 Air Water Viscous Ψv (10-12m2)
(laminar term)
Inertial Ψi (10-6m)
(turbulent term)
SSU2 24 2 6 1 1 0,13 - 280
SSU5 37 5 10 2 3 1,59 - 190
SSU10 37 11 26 6 7 2,00 - 170
SSU15 37 14 35 8 10 3,38 1,78 160
SSU25 37 27 50 18 21 9,63 2,17 125
SSU40 49 39 135 26 31 19,79 2,66 110
SSU60 43 59 198 56 67 27,85 3,86 90
SSU80 49 84 198 80 95 73,61 8,08 70
  1. Intermediate grades can be manufactured on demand.
  2. Measured with a porometer.
  3. Equivalent to the bubble point, determined in-out according to the ISO 4003:1977 standard at a continous flow of 5ml/min.
  4. Determined by a single pass at 0.01 m/s with a 2mm thick sample.
  5. Measured according to the ISO 4022:2018 standard under the following conditions: pressure slope 250 s/bar, maximum pressure difference 1.5 bar, maximum flow 3.3 l/s.

Air pressure loss

Air pressure loss and flow rate of the different AmesPore® SSU filters

Water pressure loss

Water pressure loss and flow rate of the different AmesPore® SSU filters

Would you need any information about stainless steel 316L filters ?

AMES can create specific solutions of shapes, materials and performance in which the porosity of the sintered product is tailored to the applications.
Please, contact us and we will answer you as soon as possible.

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