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AISI 440C Stainless Steel vs. N08031 Stainless Steel

Both AISI 440C stainless steel and N08031 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 440C stainless steel and the bottom bar is N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 2.0 to 14
45
Fatigue Strength, MPa 260 to 840
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
81
Shear Strength, MPa 430 to 1120
510
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
730
Tensile Strength: Yield (Proof), MPa 450 to 1900
310

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 390
460
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 22
12
Thermal Expansion, µm/m-K 10
18

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
39
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.2
7.1
Embodied Energy, MJ/kg 31
96
Embodied Water, L/kg 120
240

Common Calculations

PREN (Pitting Resistance) 18
52
Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 71
25
Strength to Weight: Bending, points 23 to 46
22
Thermal Diffusivity, mm2/s 6.0
3.1
Thermal Shock Resistance, points 26 to 71
14

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.015
Chromium (Cr), % 16 to 18
26 to 28
Copper (Cu), % 0
1.0 to 1.4
Iron (Fe), % 78 to 83.1
29 to 36.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
6.0 to 7.0
Nickel (Ni), % 0
30 to 32
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.010