FabDigit

25Cr2Ni4WA vs 40CrNiMoA and 2 more: properties

25Cr2Ni4WA40CrNiMoAH1118Ni(200) Maraging Steel

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

208 GPa30.2 Msi
207 GPa30 Msi
210 GPa30.5 Msi
186 GPa27 Msi

Shear Modulus

80 GPa11.6 Msi
80 GPa11.6 Msi
81 GPa11.7 Msi
71 GPa10.3 Msi

Poisson's Ratio

0.29
0.29
0.29
0.3

Tensile Strength (Ultimate)

1,130 MPa164 ksi
1,080 MPa157 ksi
800 MPa116 ksi
1,450 MPa210 ksi

Yield Strength (0.2% offset)

990 MPa144 ksi
950 MPa138 ksi
510 MPa74 ksi
1,400 MPa203 ksi

Elongation at Break

13%
16%
20%
12%

Reduction in Area

52%
58%
45%
60%

Compressive Strength

1,000 MPa145 ksi
980 MPa142 ksi
1,420 MPa206 ksi

Shear Strength

680 MPa98.6 ksi
660 MPa95.7 ksi
500 MPa72.5 ksi
870 MPa126 ksi

Fatigue Strength (Endurance Limit)

540 MPa78.3 ksi
520 MPa75.4 ksi
600 MPa87 ksi

Fracture Toughness (K_IC)

95 MPa·√m86.5 ksi·√in
90 MPa·√m81.9 ksi·√in
155 MPa·√m141 ksi·√in

Charpy V-Notch Impact (RT)

78 J57.5 ft·lbf
70 J51.6 ft·lbf
40 J29.5 ft·lbf
60 J44.3 ft·lbf

Hardness, Brinell

330 HB
320 HB
200 HB
400 HB

Hardness, Rockwell C

34 HRC
34 HRC
43 HRC

Hardness, Vickers

345 HV
335 HV
210 HV
420 HV

Hardness, Rockwell B

94 HRB

Same in both: Bulk Modulus 160 GPa23.2 Msi

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,420°C2,588 °F
1,420°C2,588 °F
1,427°C2,601 °F
1,413°C2,575 °F

Liquidus Temperature

1,490°C2,714 °F
1,500°C2,732 °F
1,470°C2,678 °F
1,450°C2,642 °F

Thermal

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

Thermal Conductivity

31 W/m·K17.9 BTU/hr·ft·°F
44 W/m·K25.4 BTU/hr·ft·°F
25 W/m·K14.4 BTU/hr·ft·°F
20.5 W/m·K11.8 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.5 µm/m·K6.4 µin/in·°F
12.3 µm/m·K6.8 µin/in·°F
11.9 µm/m·K6.6 µin/in·°F
10.1 µm/m·K5.6 µin/in·°F

Latent Heat of Fusion

250 J/g107 BTU/lb
250 J/g107 BTU/lb
250 J/g107 BTU/lb
270 J/g116 BTU/lb

Max Service Temperature (continuous)

350°C662 °F
400°C752 °F
540°C1,004 °F
400°C752 °F

Min Service Temperature

-70°C-94 °F
-60°C-76 °F
-40°C-40 °F
-196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

5.7 % IACS
7 % IACS
3.3 % IACS
3.8 % IACS

Electrical Resistivity

3×10⁻⁷ Ω·m11.8 µΩ·in
2.48×10⁻⁷ Ω·m9.76 µΩ·in
5.2×10⁻⁷ Ω·m20.5 µΩ·in
4.5×10⁻⁷ Ω·m17.7 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.6 V
-0.6 V
-0.52 V

Corrosion Resistance

15 / 100
15 / 100
18 / 100
25 / 100

Manufacturability

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

Machinability

32 / 100
42 / 100
55 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

35%
45%
45%
30%

Weldability

20 / 100
30 / 100
35 / 100
70 / 100

Formability (cold)

20 / 100
25 / 100
30 / 100
15 / 100

Castability

25 / 100
40 / 100
30 / 100
45 / 100

Brazeability / Solderability

35 / 100
45 / 100
40 / 100
50 / 100

Polishability

70 / 100
65 / 100
75 / 100
80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

34 MJ/kg14,617 BTU/lb
32 MJ/kg13,758 BTU/lb
34 MJ/kg14,617 BTU/lb
110 MJ/kg47,292 BTU/lb

Embodied Carbon (primary production)

2.6 kg CO₂/kg
2.3 kg CO₂/kg
2.5 kg CO₂/kg
7.5 kg CO₂/kg

Embodied Water

60 L/kg7.2 gal/lb
55 L/kg6.6 gal/lb
70 L/kg8.4 gal/lb
200 L/kg24 gal/lb

Typical Recycled Content

25%
30%
40%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

144 kN·m/kg
138 kN·m/kg
103 kN·m/kg
181 kN·m/kg

Specific Stiffness (E / density)

26.5 MN·m/kg
26.4 MN·m/kg
26.9 MN·m/kg
23.3 MN·m/kg

Modulus of Resilience

2,356 kJ/m³
2,180 kJ/m³
619 kJ/m³
5,269 kJ/m³

Thermal Diffusivity

8.6 mm²/s
11.8 mm²/s
7 mm²/s
5.7 mm²/s

Thermal Shock Resistance Index

15
19
8
16

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 scale40CrNiMoAH1118Ni(200) Maraging Steel25Cr2Ni4WA

Manufacturing and finishing

Capability25Cr2Ni4WA40CrNiMoAH1118Ni(200) Maraging Steel
CNC machiningYesYes
Sheet metalYes
Default conditionQ&TAnnealed
Relative cost$$$ Premium$$ Standard$$ Standard$$$$ High
Min. machined wall0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µm
AlCrNYesYes
AlTiNYesYes
Black OxideYesYes
CVD Al2O3YesYes
CVD TiCNYesYes
CVD TiNYesYes
CerakoteYesYes
Chrome PlatingYesYes
CrNYesYes
DLCYesYes
E-CoatingYesYes
HVOF CoatingYesYes
Hot-Dip GalvanizingYesYes
MoS2YesYes
Multilayer CVDYesYes
Nickel PlatingYesYes
PTFE CoatingYesYes
PaintingYesYes

They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 25Cr2Ni4WA and 40CrNiMoA 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.