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EN 1.1121 Steel vs. EN 1.4432 Stainless Steel

Both EN 1.1121 steel and EN 1.4432 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.1121 steel and the bottom bar is EN 1.4432 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
44
Fatigue Strength, MPa 160
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 260
420
Tensile Strength: Ultimate (UTS), MPa 400
610
Tensile Strength: Yield (Proof), MPa 210
250

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
960
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
19
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.9
Embodied Energy, MJ/kg 18
54
Embodied Water, L/kg 45
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
220
Resilience: Unit (Modulus of Resilience), kJ/m3 110
150
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 14
21
Strength to Weight: Bending, points 15
20
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 13
14

Alloy Composition

Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Iron (Fe), % 98.8 to 99.63
62.3 to 70.5
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
10.5 to 13
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.015