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AISI 420 Stainless Steel vs. EN 1.1122 Steel

Both AISI 420 stainless steel and EN 1.1122 steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 420 stainless steel and the bottom bar is EN 1.1122 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
100 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.0 to 15
12 to 21
Fatigue Strength, MPa 220 to 670
170 to 260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 420 to 1010
240 to 290
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
340 to 460
Tensile Strength: Yield (Proof), MPa 380 to 1310
240 to 370

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 620
400
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 27
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
1.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
18
Embodied Water, L/kg 100
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
36 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
160 to 360
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 62
12 to 16
Strength to Weight: Bending, points 22 to 41
14 to 17
Thermal Diffusivity, mm2/s 7.3
14
Thermal Shock Resistance, points 25 to 62
11 to 15

Alloy Composition

Carbon (C), % 0.15 to 0.4
0.080 to 0.12
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 82.3 to 87.9
98.7 to 99.62
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 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 0.030
0 to 0.025