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EN 1.4742 Stainless Steel vs. EN 1.8831 Steel

Both EN 1.4742 stainless steel and EN 1.8831 steel are iron alloys. They have 80% 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 1.4742 stainless steel and the bottom bar is EN 1.8831 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
19
Fatigue Strength, MPa 180
330
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 370
390
Tensile Strength: Ultimate (UTS), MPa 600
630
Tensile Strength: Yield (Proof), MPa 300
480

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 19
49
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.3
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.6
Embodied Energy, MJ/kg 32
21
Embodied Water, L/kg 130
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
110
Resilience: Unit (Modulus of Resilience), kJ/m3 230
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 5.1
13
Thermal Shock Resistance, points 21
18

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0.020 to 0.040
Carbon (C), % 0 to 0.12
0 to 0.16
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 77.2 to 81.6
96.6 to 99.98
Manganese (Mn), % 0 to 1.0
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0.7 to 1.4
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.0050
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.1