In short: 420 is a hardenable martensitic stainless steel. It reaches high hardness after heat treatment and is used in metal 3D printing for plastic moulds, cutting and wear parts where wear resistance and moderate corrosion resistance are needed together.
Typical applications
- Plastic injection mould inserts
- Cutting and wear parts
- Surgical instrument prototypes
- Pump and valve internals
Reference properties of printed parts
| Tensile strength (MPa) | 1793 |
|---|---|
| Hardness | 51 HRC |
| Thermal conductivity (W/m·K) | 24.95 (100 °C) |
| Elongation (%) | — |
| Yield strength (MPa) | 1269 |
Solid-part reference values from the cited datasheet; not a powder or batch guarantee. Source: Carpenter · CarTech 420 Stainless, p.2 ↗
Particle size and compatible processes
The standard cut is 15–53 µm, suitable for laser powder bed fusion (LPBF / SLM / DMLS) machines. Coarser cuts for DED/LMD processes can be requested. Share your machine model and layer thickness and we will confirm the right cut and batch documents together.
Frequently asked questions
What hardness can 420 stainless steel powder reach?
Achievable hardness depends on print parameters, preheating and the hardening-tempering route. Share your target hardness and we will review a suitable heat treatment route with you.
420 powder price: what does it depend on?
The price depends on order quantity (kg), particle size cut, packaging (argon-filled cans or bottles), required documents (certificate of analysis, PSD report) and lead time. For a current price, state the quantity and your machine model in the quote form.
Which documents come with the order?
A certificate of analysis with chemical composition, particle size distribution (D10/D50/D90), flow and density values can be requested for each batch. Additional documents for aerospace, medical or dental projects are confirmed at the quotation stage.
Price and supply
Send your price and delivery request for 420 powder with quantity, particle size, machine model and required quality documents. Supply options and documents are confirmed with the quotation.
Chemical composition, batch CoA, particle size distribution, machine and process compatibility.
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