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EN 1.4020 Stainless Steel vs. EN 1.6957 Steel

Both EN 1.4020 stainless steel and EN 1.6957 steel are iron alloys. They have 71% of their average alloy composition in common. There are 28 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 1.6957 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 13 to 34
18
Fatigue Strength, MPa 340 to 540
530
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 510 to 680
570
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
930
Tensile Strength: Yield (Proof), MPa 430 to 950
780

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 890
450
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
5.0
Density, g/cm3 7.6
7.9
Embodied Carbon, kg CO2/kg material 2.5
2.1
Embodied Energy, MJ/kg 37
29
Embodied Water, L/kg 150
60

Common Calculations

PREN (Pitting Resistance) 23
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
160
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 41
33
Strength to Weight: Bending, points 25 to 32
27
Thermal Shock Resistance, points 16 to 23
27

Alloy Composition

Carbon (C), % 0 to 0.15
0.22 to 0.32
Chromium (Cr), % 16.5 to 19
1.2 to 1.8
Iron (Fe), % 62.8 to 71.8
92.7 to 94.7
Manganese (Mn), % 11 to 14
0.15 to 0.4
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 0.5 to 2.5
3.4 to 4.0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.030
0 to 0.0070
Vanadium (V), % 0
0.050 to 0.15