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AISI 440C Stainless Steel vs. EN 1.4618 Stainless Steel

Both AISI 440C stainless steel and EN 1.4618 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 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 EN 1.4618 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 2.0 to 14
51
Fatigue Strength, MPa 260 to 840
240 to 250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 430 to 1120
480 to 500
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
680 to 700
Tensile Strength: Yield (Proof), MPa 450 to 1900
250 to 260

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 390
410
Maximum Temperature: Mechanical, °C 870
900
Melting Completion (Liquidus), °C 1480
1400
Melting Onset (Solidus), °C 1370
1360
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.7
Embodied Energy, MJ/kg 31
39
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
270 to 280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 71
24 to 25
Strength to Weight: Bending, points 23 to 46
22 to 23
Thermal Diffusivity, mm2/s 6.0
4.0
Thermal Shock Resistance, points 26 to 71
15 to 16

Alloy Composition

Carbon (C), % 1.0 to 1.2
0 to 0.1
Chromium (Cr), % 16 to 18
16.5 to 18.5
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 78 to 83.1
62.7 to 72.5
Manganese (Mn), % 0 to 1.0
5.5 to 9.5
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0
4.5 to 5.5
Nitrogen (N), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.040
0 to 0.070
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010