Aerospace Steel · Maraging Steel
Steel Maraging 250
Steel Maraging 250 is an aerospace steel steel — premium aerospace maraging bar. Typical values: 825 MPa yield, 8 g/cm³, rated to 480 °C. Available for CNC machining, Sheet metal, 3D printing at FabDigit.
Properties
Typical room-temperature values in the Annealed condition. Metric first, imperial in gray. The bars show where Maraging 250 sits against the other 317 steel grades in the catalog.
Datasheet
| Yield strength | 825 MPa120 ksi |
|---|---|
| Tensile strength | 1,750 MPa254 ksi |
| Hardness | 290 HB |
| Density | 8 g/cm³0.289 lb/in³ |
| Specific strength (yield ÷ density) | 103 |
| Min service temp | -50 °C-58 °F |
| Max service temp | 480 °C896 °F |
| Electrical conductivity | 3.1 % IACS1.8 MS/m |
| Machinability | Fair40 / 100 |
| Weldability | Very good75 / 100 |
| Formability | Fair40 / 100 |
| ISO 513 machining group | P |
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Against other steel grades
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. Maraging 250 is highlighted; hover a dot for its name, or open the interactive family chart.
Manufacturability
The process limits FabDigit's quote engine applies to Maraging 250. Design inside these and the part quotes instantly; outside them it routes to an engineer.
CNC machining
| Machinability | Fair40 / 100 |
|---|---|
| ISO material group | P.2 |
| Cutting speed (rough / finish) | 180 / 210 m/min |
| Minimum wall | 0.8 mm |
| Minimum internal radius | 1 mm |
| Drill depth limit | 5× diameter |
| Best surface (machined / polished) | Ra 1.6 / — |
| Hardenable after machining | No |
Sheet metal
| Formability | Fair40 / 100 |
|---|---|
| Weldability | Better75 / 100 |
3D printing
| Technologies | DMLS |
|---|---|
| Layer height | 20 – 60 µmdefault 30 µm |
| Minimum wall / feature | 0.5 / 0.3 mm |
| Build envelope | 250 × 250 × 325 mm |
| Supports | Yes |
| Anisotropy | Mild |
| Mandatory post-processing | heat treatment |
Conditions and tempers
How Maraging 250 is supplied and what each state is for. The default is what FabDigit quotes unless your drawing says otherwise.
| Condition | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
AnnealedDefault Temper | Softest supply state — for forming, or when you heat-treat after machining | — | — | — | — |
Aged Precipitation aged | Full strength delivered — nothing to do after machining | — | — | — | — |
As Printed Print State | Standard printed state — fine for prototypes and fixtures | — | — | — | — |
Stress Relieved Heat Treat State | Holds tight flatness/tolerance through heavy machining | — | — | — | — |
Heat treatment and post-processing
Operations FabDigit's suppliers routinely run on Maraging 250, ranked by how often they make sense for this grade.
Heat treatment
| Quench & Temperrecommended | Achieve target hardness with controlled toughness28–55 HRC |
|---|---|
| Full Anneal | Restore ductility; relieve residual stress; coarsen grain |
| Stress Relief | Reduce residual stress without changing structure |
| Normalize | Refine grain; reset prior cold-work |
| Induction Hardening | Local surface hardening via induction50–62 HRC |
| Process Anneal | Reduce stress between cold-work steps |
| Flame Hardening | Local surface hardening via direct flame50–60 HRC |
| Case Harden (Carburize) | Diffuse C into surface; harden case to 60+ HRC58–64 HRC |
Post-processing
| Manual Deburr | Deburrstandard |
|---|---|
| Edge Break (0.5mm) | Deburr |
| Shot Peen | Blast |
| Glass Bead Blast | Blast |
| Laser Mark | Marking |
| CMM Inspection | Inspection |
| FAI Report | Inspection |
| Individual Bag | Packaging |
Surface finishes for Maraging 250
Coatings and treatments compatible with steel on the processes Maraging 250 runs on. Pick them in the quote configurator or call them out on the drawing.
Plating
- Chrome Plating
- Copper Plating
- Electroless Nickel (EN)
- Gold Plating
- Hard Chrome Plating
- Hot-Dip Galvanizing
- Nickel Plating
- Silver Plating
- Tin Plating
- Zinc Plating
- Zinc-Flake (Dip-Spin) Coating
- Zinc-Nickel Plating
PVD Coating
- AlCrN
- AlTiN
- CrN
- DLC
- MoS2
- TiAlN
- TiB2
- TiCN
- TiN
- WC/C
- ZrN
Organic Coating
- Cerakote
- E-Coating
- Epoxy Coating
- Painting
- Powder Coating
- PTFE Coating
CVD Coating
- CVD Al2O3
- CVD TiCN
- CVD TiN
- Multilayer CVD
Marking / Decoration
- Chemical Etching
- Dot Peen Marking
- Electro-chemical Etching
- Embossing / Debossing
- Ink Stamping
- Laser Marking
- Mechanical Engraving
- Steel Stamping
- Vibro Engraving / Scribing
Black / Phosphate
- Black Oxide
- Manganese Phosphate
- Zinc Phosphate
Thermal Spray
- HVOF Coating
- Plasma Spray
Metal Finish
- Passivated (Metal AM)
- Plated (Metal AM)
Equivalent designations
Standards and trade names that resolve to Steel Maraging 250 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 18Ni-25018Ni250
- Other
- Maraging Steel 250Vascomax 250
Stock forms
Raw-material forms FabDigit sources Maraging 250 in.
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.