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EN 1.6579 Steel vs. EN 1.4123 Stainless Steel

Both EN 1.6579 steel and EN 1.4123 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.6579 steel and the bottom bar is EN 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 290
220 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 850 to 980
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 440
840
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
23
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.7
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
4.2
Embodied Energy, MJ/kg 22
62
Embodied Water, L/kg 56
120

Common Calculations

PREN (Pitting Resistance) 2.4
24
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 30 to 35
26 to 29
Strength to Weight: Bending, points 25 to 28
23 to 25
Thermal Diffusivity, mm2/s 11
6.3
Thermal Shock Resistance, points 25 to 29
26 to 29

Alloy Composition

Carbon (C), % 0.32 to 0.38
0.35 to 0.5
Chromium (Cr), % 1.4 to 1.7
14 to 16.5
Iron (Fe), % 94.2 to 96.1
76.7 to 84.6
Manganese (Mn), % 0.6 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.35
1.0 to 2.5
Nickel (Ni), % 1.4 to 1.7
0 to 0.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 1.5

Comparable Variants