IS0 13947:2011 pdf download.Metallic powders - Test method for the determination of non-metallic inclusions in metal powders using a powder-forged specimen.
This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts However. in parts where there has been a significant amount of material flow, the near-neighbour separation distance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted
This test method Is not suitable for determining the non-metallic Inclusion level of parts that have been forged such that the core region contains porosity At the magnification used for this test method, residual porosity is hard to distinguish from Inclusions. Too much residual porosity makes a meaningful assessment of the inclusion population impossible.
This test method can be applied to matenals that contain manganese sulfide (admixed or prealloyed), provided the near-neighbour separation distance is changed from 30 pm to 15 pm
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISOITR 14321:1997. Sintered metal materials, excluding hardmelals — Metallographic preparation and examnatron
ASTM B796. Standard test method for nonmetalbc inclusion content of powders intended for powder forging (P/F) applications
ASTM E3, Standard guide kxpreparat,on of motallographic specimens
ASTM E768. Standard guide for preparing and evaluattnq specimens for automatic inclusion assessment of steel.
This test method Is not suitable for determining the non-metallic Inclusion level of parts that have been forged such that the core region contains porosity At the magnification used for this test method, residual porosity is hard to distinguish from Inclusions. Too much residual porosity makes a meaningful assessment of the inclusion population impossible.
This test method can be applied to matenals that contain manganese sulfide (admixed or prealloyed), provided the near-neighbour separation distance is changed from 30 pm to 15 pm
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISOITR 14321:1997. Sintered metal materials, excluding hardmelals — Metallographic preparation and examnatron
ASTM B796. Standard test method for nonmetalbc inclusion content of powders intended for powder forging (P/F) applications
ASTM E3, Standard guide kxpreparat,on of motallographic specimens
ASTM E768. Standard guide for preparing and evaluattnq specimens for automatic inclusion assessment of steel.
