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EN 1.4122 Stainless Steel vs. EN 1.4020 Stainless Steel

Both EN 1.4122 stainless steel and EN 1.4020 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4122 stainless steel and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14
13 to 34
Fatigue Strength, MPa 260 to 360
340 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 480 to 520
510 to 680
Tensile Strength: Ultimate (UTS), MPa 790 to 850
770 to 1130
Tensile Strength: Yield (Proof), MPa 450 to 630
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 870
890
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1400
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 10
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.4
2.5
Embodied Energy, MJ/kg 33
37
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 20
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
460 to 2290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 31
28 to 41
Strength to Weight: Bending, points 25 to 26
25 to 32
Thermal Shock Resistance, points 28 to 30
16 to 23

Alloy Composition

Carbon (C), % 0.33 to 0.45
0 to 0.15
Chromium (Cr), % 15.5 to 17.5
16.5 to 19
Iron (Fe), % 77.2 to 83.4
62.8 to 71.8
Manganese (Mn), % 0 to 1.5
11 to 14
Molybdenum (Mo), % 0.8 to 1.3
0
Nickel (Ni), % 0 to 1.0
0.5 to 2.5
Nitrogen (N), % 0
0.2 to 0.45
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030