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EN 1.4439 Stainless Steel vs. EN 1.8838 Steel

Both EN 1.4439 stainless steel and EN 1.8838 steel are iron alloys. They have 65% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4439 stainless steel and the bottom bar is EN 1.8838 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
19
Fatigue Strength, MPa 270
290
Impact Strength: V-Notched Charpy, J 90
58
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 470
380
Tensile Strength: Ultimate (UTS), MPa 680
610
Tensile Strength: Yield (Proof), MPa 310
430

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
44
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
2.6
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.7
Embodied Energy, MJ/kg 61
23
Embodied Water, L/kg 160
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
100
Resilience: Unit (Modulus of Resilience), kJ/m3 240
500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
21
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 15
18

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.054
Carbon (C), % 0 to 0.030
0 to 0.18
Chromium (Cr), % 16.5 to 18.5
0 to 0.35
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 58.7 to 66.9
95 to 99.985
Manganese (Mn), % 0 to 2.0
0 to 1.8
Molybdenum (Mo), % 4.0 to 5.0
0 to 0.23
Nickel (Ni), % 12.5 to 14.5
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0.12 to 0.22
0 to 0.027
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.65
Sulfur (S), % 0 to 0.015
0 to 0.025
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0
0 to 0.14