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AISI 440C Stainless Steel vs. EN 1.7139 Steel

Both AISI 440C stainless steel and EN 1.7139 steel are iron alloys. They have 82% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 1.7139 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
480 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
420
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 22
44
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.2
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
19
Embodied Water, L/kg 120
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 71
17 to 49
Strength to Weight: Bending, points 23 to 46
17 to 35
Thermal Diffusivity, mm2/s 6.0
12
Thermal Shock Resistance, points 26 to 71
14 to 41

Alloy Composition

Carbon (C), % 1.0 to 1.2
0.14 to 0.19
Chromium (Cr), % 16 to 18
0.8 to 1.1
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 78 to 83.1
96.8 to 98
Manganese (Mn), % 0 to 1.0
1.0 to 1.3
Molybdenum (Mo), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.015
0.020 to 0.040

Comparable Variants