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AISI 431 Stainless Steel vs. EN 1.1158 Steel

Both AISI 431 stainless steel and EN 1.1158 steel are iron alloys. They have 82% 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 431 stainless steel and the bottom bar is EN 1.1158 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 15 to 17
23 to 24
Fatigue Strength, MPa 430 to 610
170 to 220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 550 to 840
300 to 320
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
470 to 500
Tensile Strength: Yield (Proof), MPa 710 to 1040
240 to 310

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 850
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 26
49
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 31
19
Embodied Water, L/kg 120
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
150 to 250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 50
17 to 18
Strength to Weight: Bending, points 27 to 36
17 to 18
Thermal Diffusivity, mm2/s 7.0
13
Thermal Shock Resistance, points 28 to 43
15 to 16

Alloy Composition

Carbon (C), % 0 to 0.2
0.22 to 0.29
Chromium (Cr), % 15 to 17
0 to 0.4
Iron (Fe), % 78.2 to 83.8
97.6 to 99.38
Manganese (Mn), % 0 to 1.0
0.4 to 0.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 1.3 to 2.5
0 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035