ISO 18549-2:2009 PDF

Metallic powders — Determination of apparent density and flow rate at elevated temperatures — Part 2: Determination of flow rate at elevated temperatures

Open preview (PDF)

Title (English):

ISO 18549-2:2009

Metallic powders — Determination of apparent density and flow rate at elevated temperatures — Part 2: Determination of flow rate at elevated temperatures

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 5
Publication date:: April 3, 2009
Edition:: ISO IS 18549 edition 1 version 1
ICS:: 77.160

Delivery type:

Full version25 €Read online 24h10 €Read online 72h15 €

Document language:

enru

Delivery time:Immediate download

Price:25 €

Description (English):

ISO 18549-2:2009 describes two methods for the determination of the time (flow rate) it takes for a given quantity of a heated powder mix, based on iron or steel powders and to be used for warm compaction, to pass through a funnel with a given orifice diameter. Method A uses a funnel with an orifice of 2,5 mm and a test portion of 50 g and is, to a large extent, based on the method standardized in ISO 4490:2008. The method can only be used for powder mixes that flow freely through the 2,5 mm orifice in the heated condition. Method B uses a funnel with an orifice of 5 mm and a test portion with a size of 150 g. Both methods cover a testing temperature range of 60 °C to 180 °C and either of them can be selected after agreement between the parties involved.

Technical details

Technical committee: ISO/TC 119/SC 2 - Sampling and testing methods for powders (including powders for hardmetals)
SKU: ISO 18549-2:2009

Abstract

Overview

ISO 18549-2:2009 specifies laboratory methods to determine the flow rate of heated metallic powder mixes intended for warm compaction. It covers two funnel-based test methods for iron- or steel‑based powder mixes, measuring the time required for a defined mass of heated powder to pass through a calibrated funnel orifice. Testing is carried out inside a thermally insulated enclosure at temperatures from 60 °C to 180 °C.

Key Topics and Requirements

Methods
- Method A: Funnel orifice = 2.5 mm, test portion = 50 g. Largely based on ISO 4490:2008; can be used only when the heated mix flows freely through the 2.5 mm orifice.
- Method B: Funnel orifice = 5 mm, test portion = 150 g. Used when larger orifice is required; no formal calibration method is specified for this funnel.
Apparatus and controls
- Thermally insulated enclosure, heated funnel (non‑magnetic, corrosion‑resistant metal, inner surface polished to Ra ≤ 0,4 μm), stand with vibration‑free base, heating device (e.g., band heater), laboratory furnace, thermocouples, balance (≥200 g capacity, 0.05 g accuracy), stopwatch (0.1 s resolution).
Temperature control
- Testing temperature range: 60 °C–180 °C, with allowable variation ±2.5 °C for both powder and funnel.
Calibration and procedure
- Method A funnel is calibrated per ISO 4490:2008; any correction factor from room‑temperature calibration is applied at elevated temperatures. Method B relies on comparative testing if disagreement arises.
- Procedure: heat sample (50 g or 150 g), transfer quickly to funnel, time flow from first exit to last particle; average two or three determinations.
Results and reporting
- Reported as seconds per 50 g (Method A, corrected) or seconds per 150 g (Method B), rounded to the nearest second. Test report must reference ISO 18549-2 and include sample ID, orifice diameter, test temperature, number of determinations and any deviations.

Applications and Users

Who uses it: powder metallurgy manufacturers, quality control and materials testing laboratories, component suppliers involved in warm compaction processes (e.g., sintered iron and steel parts), R&D groups optimizing powder flow at elevated temperatures.
Practical value: assess flowability of warm‑compaction powder mixes, compare formulation or process changes, ensure reproducible feeding/filling behaviour in warm tooling, support supplier specifications and acceptance testing.

Related Standards

ISO 18549-1 - Determination of apparent density at elevated temperatures (companion document).
ISO 4490:2008 - Metallic powders - Determination of flow rate by calibrated funnel (relevant for Method A funnel calibration).

Keywords: ISO 18549-2:2009, metallic powders, flow rate at elevated temperatures, warm compaction, Method A, Method B, funnel orifice, powder metallurgy, ISO 4490.

Related standards

Standards mentioned in the description

Abstract

Overview

Key Topics and Requirements

Methods
- Method A: Funnel orifice = 2.5 mm, test portion = 50 g. Largely based on ISO 4490:2008; can be used only when the heated mix flows freely through the 2.5 mm orifice.
- Method B: Funnel orifice = 5 mm, test portion = 150 g. Used when larger orifice is required; no formal calibration method is specified for this funnel.
Apparatus and controls
- Thermally insulated enclosure, heated funnel (non‑magnetic, corrosion‑resistant metal, inner surface polished to Ra ≤ 0,4 μm), stand with vibration‑free base, heating device (e.g., band heater), laboratory furnace, thermocouples, balance (≥200 g capacity, 0.05 g accuracy), stopwatch (0.1 s resolution).
Temperature control
- Testing temperature range: 60 °C–180 °C, with allowable variation ±2.5 °C for both powder and funnel.
Calibration and procedure
- Method A funnel is calibrated per ISO 4490:2008; any correction factor from room‑temperature calibration is applied at elevated temperatures. Method B relies on comparative testing if disagreement arises.
- Procedure: heat sample (50 g or 150 g), transfer quickly to funnel, time flow from first exit to last particle; average two or three determinations.
Results and reporting
- Reported as seconds per 50 g (Method A, corrected) or seconds per 150 g (Method B), rounded to the nearest second. Test report must reference ISO 18549-2 and include sample ID, orifice diameter, test temperature, number of determinations and any deviations.

Applications and Users

Who uses it: powder metallurgy manufacturers, quality control and materials testing laboratories, component suppliers involved in warm compaction processes (e.g., sintered iron and steel parts), R&D groups optimizing powder flow at elevated temperatures.
Practical value: assess flowability of warm‑compaction powder mixes, compare formulation or process changes, ensure reproducible feeding/filling behaviour in warm tooling, support supplier specifications and acceptance testing.

Related Standards

ISO 18549-1 - Determination of apparent density at elevated temperatures (companion document).
ISO 4490:2008 - Metallic powders - Determination of flow rate by calibrated funnel (relevant for Method A funnel calibration).

Keywords: ISO 18549-2:2009, metallic powders, flow rate at elevated temperatures, warm compaction, Method A, Method B, funnel orifice, powder metallurgy, ISO 4490.

ISO 18549-2:2009 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

Applications and Users

Related Standards

Related standards

Abstract

Overview

Key Topics and Requirements

Applications and Users

Related Standards

Related standards

Metallic powders — Determination of flow rate by means of a calibrated funnel (Hall flowmeter)

Metallic powders. Determination of apparent density and flow rate at elevated temperatures. Determination of…

Metallic powders — Determination of apparent density and flow rate at elevated temperatures — Part 1: Determi…

Metallic powders - Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (ISO 4490:2018)