439 ferritic stainless steel powder is suitable for parts requiring a balance of corrosion resistance, thermal cycling stability and material cost. It can be used to develop industrial structural parts and heat-resistant applications. The available test record shows D50 of 9.896 μm.
- D10
- 2.955 μm
- D50
- 9.896 μm
- D90
- 27.944 μm
Test record:Distribution basis: volume. The particle size values above correspond to the test record for the date shown; the particle size for supply is confirmed for each project.
- Test instrument
- LT2100
- Dispersion medium
- Water
- Test procedure
- Metal powder SOP
- Result basis
- Volume-based distribution
Compare more than the grade: define the powder delivery condition
Include the target material, particle size, manufacturing process and purchasing requirements so Tongcheng can quickly assess a standard powder, particle-size adjustment or custom development.
- Material and composition
- 439 stainless steel powderPlease also indicate the target grade, reference standards or current materials.
- Particle size distribution
- D10 2.955 / D50 9.896 / D90 27.944 μmTest record:Volume distribution; particle size values from the test record shown, not fixed specifications for all supplied batches.Select in conjunction with MIM, pressing and sintering, part wall thickness, and fill requirements.
- Powder process data
- Density, flow and sampling methods are confirmed by projectDifferent test methods and forming routes require the use of comparable data.
- Chemistry and Interstitial Elements
- Determine items of concern based on material system and customer processComposition, carbon, oxygen, nitrogen or other inspection requirements may be stated in the inquiry.
- Packaging and supply
- Quantity, packaging unit, label, delivery date and destination countryUsed to check production arrangements, commercial quotations and export deliveries.
Engineering focus: 439 stainless steel powder
Review the material, particle-size, process and validation factors that matter for this application.
Suitable for cost and performance comparison with austenitic and martensite materials.
It needs to be judged based on the filling, forming density and sintering conditions.
The exact adaptation depends on the temperature, corrosive medium, load and connection type.
Material properties of 439 powder
439 is a ferritic stainless steel system with good corrosion resistance and thermal cycle adaptability, and can be used for parts that require a balance between performance, manufacturing and material cost.
Typical application directions
It can be developed for heat-resistant structural parts, industrial connectors, small parts related to automobile exhaust systems and other corrosion-resistant precision parts, and is designed in conjunction with the forming density, connection method and surface treatment.
Tongcheng 439 particle size parameter
The volume-based particle size test record dated 2026-03-28 shows D10 of 2.955 μm, D50 of 9.896 μm and D90 of 27.944 μm for 439. The particle size specification for supply is confirmed for each project. Tongcheng can provide support with material selection and powder processing.
When to contact us
- Parts requiring ferritic materials, corrosion resistance and thermal cycle orientation
- Projects focused on balancing material performance with manufacturing costs
Confirm before quotation
- Operating temperature, corrosive environment, magnetic and mechanical loads
- Density, joints, surface preparation and life requirements
Discuss your powder project
Share the process step, operating conditions and part result you want to improve.
- Target grade, current material or reference material
- D10, D50 and D90 values or sieve range
- MIM or press-and-sinter process and current operating conditions
- Part application, target properties and estimated purchase volume
Technical references for this page
These references explain materials, processes or test methods. Third-party product data does not represent Tongcheng product specifications.