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EN 1.1191 Steel vs. S44625 Stainless Steel

Both EN 1.1191 steel and S44625 stainless steel are iron alloys. They have 73% 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 1.1191 steel and the bottom bar is S44625 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16 to 17
22
Fatigue Strength, MPa 210 to 290
240
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
80
Shear Strength, MPa 380 to 430
370
Tensile Strength: Ultimate (UTS), MPa 630 to 700
590
Tensile Strength: Yield (Proof), MPa 310 to 440
360

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 19
39
Embodied Water, L/kg 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 510
310
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 25
21
Strength to Weight: Bending, points 21 to 22
20
Thermal Diffusivity, mm2/s 13
4.6
Thermal Shock Resistance, points 20 to 22
19

Alloy Composition

Carbon (C), % 0.42 to 0.5
0 to 0.010
Chromium (Cr), % 0 to 0.4
25 to 27.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 97.3 to 99.08
69.4 to 74.3
Manganese (Mn), % 0.5 to 0.8
0 to 0.4
Molybdenum (Mo), % 0 to 0.1
0.75 to 1.5
Nickel (Ni), % 0 to 0.4
0 to 0.5
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.020