440C martensitic stainless steel powder is intended for applications requiring high hardness, wear resistance and edge retention. It is suitable for scissors, nail clippers, precision tools and friction components. The available test record shows D50 of 8.223 μm.
- D10
- 2.619 μm
- D50
- 8.223 μm
- D90
- 23.669 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
- 440C stainless steel powderPlease also indicate the target grade, reference standards or current materials.
- Particle size distribution
- D10 2.619 / D50 8.223 / D90 23.669 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: 440C stainless steel powder
Review the material, particle-size, process and validation factors that matter for this application.
440C is more suitable for wear and shear directions rather than parts where high toughness is the primary goal.
Finer particle sizes require simultaneous attention to feedstock, debinding, sintering and surface presentation.
Final hardness and edge properties are determined by more than just powder grade.
Material properties of 440C powder
440C is a high-carbon martensitic stainless steel. It can obtain high hardness and wear resistance through appropriate heat treatment, and is suitable for cutting edges, friction and long-term wear conditions.
Scissors, nail clippers and precision tools
440C Can be used on shear components, personal care tools, bushings, wear-resistant structural parts and small precision tools. Powder forming facilitates the manufacture of complex contours and reduces subsequent machining.
Particle size and heat treatment synergy
The volume-based particle size test record dated 2026-04-09 shows D10 of 2.619 μm, D50 of 8.223 μm and D90 of 23.669 μm for 440C. The particle size specification for supply is confirmed for each project. Tongcheng can provide material recommendations relating to filling during forming, sintering densification, dimensional control and heat treatment.
When to contact us
- Scissors, nail clippers, precision tools and wear-resistant friction parts
- Complex small parts, high hardness and surface processing projects
Confirm before quotation
- Target hardness, toughness, cutting edge and life
- Heat treatment, grinding and polishing and assembly tolerances
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.