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EN 1.4104 Stainless Steel vs. EN 1.8958 Steel

Both EN 1.4104 stainless steel and EN 1.8958 steel are iron alloys. They have 83% of their average alloy composition in common. There are 30 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 EN 1.4104 stainless steel and the bottom bar is EN 1.8958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 23
19
Fatigue Strength, MPa 230 to 310
150
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 400 to 450
270
Tensile Strength: Ultimate (UTS), MPa 630 to 750
430
Tensile Strength: Yield (Proof), MPa 350 to 560
220

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 860
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
46
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 30
19
Embodied Water, L/kg 120
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
70
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 800
130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23 to 27
15
Strength to Weight: Bending, points 21 to 24
16
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 22 to 27
13

Alloy Composition

Carbon (C), % 0.1 to 0.17
0 to 0.16
Chromium (Cr), % 15.5 to 17.5
0.35 to 0.85
Copper (Cu), % 0
0.2 to 0.6
Iron (Fe), % 78.8 to 84.1
96.5 to 99.3
Manganese (Mn), % 0 to 1.5
0.15 to 0.7
Molybdenum (Mo), % 0.2 to 0.6
0
Nickel (Ni), % 0
0 to 0.7
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0.15 to 0.35
0 to 0.040