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Stainless Steel 1.3960 vs CE8MN

Stainless Steel · grade comparison

Stainless Steel 1.3960 and CE8MN are both stainless steel grades. CE8MN is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 275 MPa (39.9 ksi) for 1.3960, about 82% more; tensile strength follows at 720 MPa (104 ksi) vs 550 MPa (79.8 ksi). In exchange, 1.3960 is the more ductile: elongation 45% versus 30% for CE8MN, and CE8MN is harder (210 HB vs 155 HB). 1.3960 runs hotter in service (700°C vs 315°C continuous). On the shop floor, 1.3960 welds better (very good vs good).

1.3960Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

CE8MNChoose it when strength drives the design.

1.3960 vs CE8MN: properties

1.3960CE8MN

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

77 GPa11.2 Msi
76 GPa11 Msi

Bulk Modulus

145 GPa21 Msi
162 GPa23.5 Msi

Poisson's Ratio

0.29
0.3

Tensile Strength (Ultimate)

550 MPa79.8 ksi
720 MPa104 ksi

Yield Strength (0.2% offset)

275 MPa39.9 ksi
500 MPa72.5 ksi

Elongation at Break

45%
30%

Reduction in Area

55%
40%

Compressive Strength

275 MPa39.9 ksi
500 MPa72.5 ksi

Shear Strength

380 MPa55.1 ksi
430 MPa62.4 ksi

Fatigue Strength (Endurance Limit)

230 MPa33.4 ksi
300 MPa43.5 ksi

Fracture Toughness (K_IC)

180 MPa·√m164 ksi·√in
100 MPa·√m91 ksi·√in

Charpy V-Notch Impact (RT)

110 J81.1 ft·lbf
80 J59 ft·lbf

Hardness, Brinell

155 HB
210 HB

Hardness, Rockwell B

80 HRB
—

Hardness, Vickers

163 HV
—

Hardness, Rockwell C

—
20 HRC

Same in both: Elastic (Young's) Modulus 195 GPa28.3 Msi

Physical

Density and transition temperatures.

Density

7.95 g/cm³0.29 lb/in³
7.75 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,385°C2,525 °F
1,400°C2,552 °F

Liquidus Temperature

1,445°C2,633 °F
1,450°C2,642 °F

Thermal

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

Thermal Conductivity

14 W/m·K8.1 BTU/hr·ft·°F
15 W/m·K8.7 BTU/hr·ft·°F

Specific Heat Capacity

500 J/kg·K0.12 BTU/lb·°F
490 J/kg·K0.12 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

16.2 µm/m·K9 µin/in·°F
13 µm/m·K7.2 µin/in·°F

Max Service Temperature (continuous)

700°C1,292 °F
315°C599 °F

Min Service Temperature

-196°C-321 °F
-50°C-58 °F

Same in both: Latent Heat of Fusion 270 J/g116 BTU/lb

Electrical

Conductivity and insulation.

Electrical Resistivity

7.9×10⁻⁷ Ω·m31.1 µΩ·in
8×10⁻⁷ Ω·m31.5 µΩ·in

Same in both: Electrical Conductivity 2.2 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.08 V
-0.2 V

Corrosion Resistance

74 / 100
72 / 100

Manufacturability

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

Machinability

38 / 100
32 / 100

Machinability Rating (AISI 1212 = 100 %)

40%
30%

Weldability

80 / 100
65 / 100

Formability (cold)

25 / 100
30 / 100

Castability

68 / 100
65 / 100

Brazeability / Solderability

50 / 100
35 / 100

Polishability

60 / 100
65 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

55 MJ/kg23,646 BTU/lb
60 MJ/kg25,795 BTU/lb

Embodied Carbon (primary production)

5.2 kg CO₂/kg
5 kg CO₂/kg

Embodied Water

130 L/kg15.6 gal/lb
250 L/kg30 gal/lb

Typical Recycled Content

75%
80%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

69 kN·m/kg
93 kN·m/kg

Specific Stiffness (E / density)

24.5 MN·m/kg
25.2 MN·m/kg

Modulus of Resilience

194 kJ/m³
641 kJ/m³

Thermal Diffusivity

3.5 mm²/s
3.9 mm²/s

Thermal Shock Resistance Index

2
4

Strength versus weight

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

3005007001,0001,5002,0007.27.47.67.888.2Density (g/cm³)Yield strength (MPa) — log scaleCE8MN1.3960

Manufacturing and finishing

Capability1.3960CE8MN
Default condition——
Relative cost$$$ Premium$$$ Premium
Min. machined wall——
Best machined surface——

Both take the same 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.

1.3960 vs CE8MN — frequently asked

Is CE8MN stronger than 1.3960?

Yes. CE8MN has a typical yield strength of 500 MPa (72.5 ksi) against 275 MPa (39.9 ksi) for 1.3960 — about 82% more. Tensile strength is 720 MPa (104 ksi) vs 550 MPa (79.8 ksi).

Which is cheaper, 1.3960 or CE8MN?

Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, 1.3960 or CE8MN?

1.3960. Its machinability rates fair (38/100) against poor (32/100) for CE8MN; for welding the order is 1.3960 first (very good, 80/100) then CE8MN (good, 65/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1.3960 and CE8MN 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.