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EN 1.4020 Stainless Steel vs. EN 1.6579 Steel

Both EN 1.4020 stainless steel and EN 1.6579 steel are iron alloys. They have 72% of their average alloy composition in common. There are 27 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 1.4020 stainless steel and the bottom bar is EN 1.6579 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
260 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 13 to 34
11 to 14
Fatigue Strength, MPa 340 to 540
380 to 570
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
850 to 980
Tensile Strength: Yield (Proof), MPa 430 to 950
600 to 910

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
440
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
3.7
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.7
Embodied Energy, MJ/kg 37
22
Embodied Water, L/kg 150
56

Common Calculations

PREN (Pitting Resistance) 23
2.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
100 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
950 to 2210
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 41
30 to 35
Strength to Weight: Bending, points 25 to 32
25 to 28
Thermal Shock Resistance, points 16 to 23
25 to 29

Alloy Composition

Carbon (C), % 0 to 0.15
0.32 to 0.38
Chromium (Cr), % 16.5 to 19
1.4 to 1.7
Iron (Fe), % 62.8 to 71.8
94.2 to 96.1
Manganese (Mn), % 11 to 14
0.6 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.35
Nickel (Ni), % 0.5 to 2.5
1.4 to 1.7
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants