FabDigit

25MnCr5 vs 8620 and 2 more: properties

25MnCr58620EN3535120

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

210 GPa30.5 Msi
205 GPa29.7 Msi
210 GPa30.5 Msi
205 GPa29.7 Msi

Tensile Strength (Ultimate)

580 MPa84.1 ksi
635 MPa92.1 ksi
760 MPa110 ksi
470 MPa68.2 ksi

Yield Strength (0.2% offset)

360 MPa52.2 ksi
385 MPa55.8 ksi
480 MPa69.6 ksi
295 MPa42.8 ksi

Elongation at Break

20%
28%
18%
25%

Reduction in Area

48%
60%
50%
55%

Shear Strength

380 MPa55.1 ksi
390 MPa56.6 ksi
460 MPa66.7 ksi
300 MPa43.5 ksi

Fatigue Strength (Endurance Limit)

265 MPa38.4 ksi
295 MPa42.8 ksi
350 MPa50.8 ksi
235 MPa34.1 ksi

Fracture Toughness (K_IC)

70 MPa·√m63.7 ksi·√in
85 MPa·√m77.4 ksi·√in
75 MPa·√m68.3 ksi·√in
90 MPa·√m81.9 ksi·√in

Charpy V-Notch Impact (RT)

50 J36.9 ft·lbf
90 J66.4 ft·lbf
45 J33.2 ft·lbf
60 J44.3 ft·lbf

Hardness, Brinell

190 HB
183 HB
229 HB
145 HB

Hardness, Rockwell B

91 HRB
90 HRB
98 HRB
78 HRB

Hardness, Vickers

200 HV
240 HV
152 HV

Compressive Strength

490 MPa71.1 ksi
295 MPa42.8 ksi

Hardness, Rockwell C

20 HRC

Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,425°C2,597 °F
1,425°C2,597 °F
1,420°C2,588 °F
1,420°C2,588 °F

Liquidus Temperature

1,490°C2,714 °F
1,505°C2,741 °F
1,495°C2,723 °F
1,500°C2,732 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³

Thermal

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

Thermal Conductivity

44 W/m·K25.4 BTU/hr·ft·°F
46.6 W/m·K26.9 BTU/hr·ft·°F
44 W/m·K25.4 BTU/hr·ft·°F
46 W/m·K26.6 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.5 µm/m·K6.4 µin/in·°F
11.6 µm/m·K6.4 µin/in·°F
11.8 µm/m·K6.6 µin/in·°F
11.9 µm/m·K6.6 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

180°C356 °F
400°C752 °F
200°C392 °F
350°C662 °F

Min Service Temperature

-40°C-40 °F
-40°C-40 °F
-40°C-40 °F
-30°C-22 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

2.1×10⁻⁷ Ω·m8.27 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in

Electrical Conductivity

8 % IACS
7.8 % IACS
7.8 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.61 V
-0.6 V
-0.61 V
-0.61 V

Corrosion Resistance

10 / 100
11 / 100
12 / 100
12 / 100

Manufacturability

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

Machinability

58 / 100
62 / 100
55 / 100
62 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
65%
58%
65%

Weldability

42 / 100
60 / 100
42 / 100
60 / 100

Formability (cold)

55 / 100
55 / 100
45 / 100
58 / 100

Castability

30 / 100
30 / 100

Brazeability / Solderability

60 / 100
65 / 100
55 / 100
70 / 100

Polishability

60 / 100
70 / 100
60 / 100
55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

29 MJ/kg12,468 BTU/lb
30 MJ/kg12,898 BTU/lb
30 MJ/kg12,898 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
2.1 kg CO₂/kg
2.1 kg CO₂/kg
1.9 kg CO₂/kg

Embodied Water

55 L/kg6.6 gal/lb
60 L/kg7.2 gal/lb
60 L/kg7.2 gal/lb
45 L/kg5.4 gal/lb

Typical Recycled Content

30%
30%
25%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

74 kN·m/kg
81 kN·m/kg
97 kN·m/kg
60 kN·m/kg

Specific Stiffness (E / density)

26.8 MN·m/kg
26.1 MN·m/kg
26.8 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

309 kJ/m³
362 kJ/m³
549 kJ/m³
212 kJ/m³

Thermal Diffusivity

11.9 mm²/s
12.5 mm²/s
11.9 mm²/s
12.5 mm²/s

Thermal Shock Resistance Index

11
12
13
9

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 scale8620EN353512025MnCr5

Manufacturing and finishing

Capability25MnCr58620EN3535120
Default conditionAnnealedHRHRHR
Relative cost$$ Standard$$ Standard$$ Standard$$ Standard
Min. machined wall0.8 mm0.8 mm0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µmRa 1.6 µmRa 1.6 µm

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

Ready to make it?

Upload a CAD file and FabDigit prices the part in 25MnCr5 and 8620 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.