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Steel 9310 vs Maraging 250

Steel · grade comparison

Steel 9310 and Maraging 250 are both steel grades, both aerospace steel. Maraging 250 is the stronger of the two: yield strength 810 MPa (117 ksi) against 600 MPa (87 ksi) for 9310, about 35% more; tensile strength follows at 1,010 MPa (146 ksi) vs 950 MPa (138 ksi). Maraging 250 is the more ductile: elongation 18% versus 15% for 9310, and Maraging 250 is harder (300 HB vs 270 HB). 9310 is stiffer (205 GPa vs 181 GPa) and 9310 conducts heat better (34 W/m·K vs 25.5 W/m·K). On the shop floor, Maraging 250 welds better (very good vs fair) and Maraging 250 sits in a lower cost tier (standard, $$) than 9310 (premium, $$$).

Maraging 250Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

9310 vs Maraging 250: properties

9310Maraging 250

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
181 GPa26.3 Msi

Shear Modulus

80 GPa11.6 Msi
70 GPa10.2 Msi

Bulk Modulus

160 GPa23.2 Msi
155 GPa22.5 Msi

Poisson's Ratio

0.29
0.3

Tensile Strength (Ultimate)

950 MPa138 ksi
1,010 MPa146 ksi

Yield Strength (0.2% offset)

600 MPa87 ksi
810 MPa117 ksi

Elongation at Break

15%
18%

Reduction in Area

45%
72%

Compressive Strength

620 MPa89.9 ksi
830 MPa120 ksi

Shear Strength

590 MPa85.6 ksi
620 MPa89.9 ksi

Fatigue Strength (Endurance Limit)

430 MPa62.4 ksi
450 MPa65.3 ksi

Fracture Toughness (K_IC)

95 MPa·√m86.5 ksi·√in
—

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
130 J95.9 ft·lbf

Hardness, Brinell

270 HB
300 HB

Hardness, Rockwell B

98 HRB
—

Hardness, Rockwell C

27 HRC
30 HRC

Hardness, Vickers

284 HV
310 HV

Physical

Density and transition temperatures.

Density

7.85 g/cm³0.28 lb/in³
8 g/cm³0.29 lb/in³

Melting Point (Solidus)

1,420°C2,588 °F
1,413°C2,575 °F

Liquidus Temperature

1,490°C2,714 °F
1,430°C2,606 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

34 W/m·K19.6 BTU/hr·ft·°F
25.5 W/m·K14.7 BTU/hr·ft·°F

Specific Heat Capacity

475 J/kg·K0.11 BTU/lb·°F
450 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.6 µm/m·K6.4 µin/in·°F
10.1 µm/m·K5.6 µin/in·°F

Min Service Temperature

-90°C-130 °F
-196°C-321 °F

Same in both: Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

6.6 % IACS
2.7 % IACS

Electrical Resistivity

2.6×10⁻⁷ Ω·m10.2 µΩ·in
6.5×10⁻⁷ Ω·m25.6 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.58 V

Corrosion Resistance

14 / 100
25 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

40 / 100
45 / 100

Machinability Rating (AISI 1212 = 100 %)

40%
45%

Weldability

38 / 100
80 / 100

Formability (cold)

35 / 100
55 / 100

Polishability

65 / 100
85 / 100

Castability

—
35 / 100

Same in both: Brazeability / Solderability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

34 MJ/kg14,617 BTU/lb
90 MJ/kg38,693 BTU/lb

Embodied Carbon (primary production)

2.5 kg CO₂/kg
7 kg CO₂/kg

Embodied Water

60 L/kg7.2 gal/lb
130 L/kg15.6 gal/lb

Typical Recycled Content

25%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

121 kN·m/kg
126 kN·m/kg

Specific Stiffness (E / density)

26.1 MN·m/kg
22.6 MN·m/kg

Modulus of Resilience

878 kJ/m³
1,812 kJ/m³

Thermal Diffusivity

9.1 mm²/s
7.1 mm²/s

Same in both: Thermal Shock Resistance Index 14

Strength versus weight

Yield strength against density for every steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

2005001,0002,0007.588.5Density (g/cm³)Yield strength (MPa) — log scale9310Maraging 250

Manufacturing and finishing

Capability9310Maraging 250
3D printing—Yes
Default conditionHRAnnealed
Relative cost$$$ Premium$$ Standard
Min. machined wall0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µm
Passivated (Metal AM)—Yes
Plated (Metal AM)—Yes

Both are offered for CNC machining and Sheet metal. They share 38 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, Copper Plating, CrN, DLC, E-Coating and 26 more.

9310 vs Maraging 250 — frequently asked

Is Maraging 250 stronger than 9310?

Yes. Maraging 250 has a typical yield strength of 810 MPa (117 ksi) against 600 MPa (87 ksi) for 9310 — about 35% more. Tensile strength is 1,010 MPa (146 ksi) vs 950 MPa (138 ksi).

Which is cheaper, 9310 or Maraging 250?

Maraging 250 is the lower-cost material: it sits in the standard tier ($$) while 9310 is premium ($$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, 9310 or Maraging 250?

Maraging 250, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for 9310; for welding the order is Maraging 250 first (very good, 80/100) then 9310 (fair, 38/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 9310 and Maraging 250 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.

Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.