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EN 1.1203 Steel vs. EN 1.4581 Stainless Steel

Both EN 1.1203 steel and EN 1.4581 stainless steel are iron alloys. They have 68% 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 1.1203 steel and the bottom bar is EN 1.4581 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 15
28
Fatigue Strength, MPa 210 to 310
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
78
Tensile Strength: Ultimate (UTS), MPa 690 to 780
510
Tensile Strength: Yield (Proof), MPa 340 to 480
210

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
990
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
21
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
4.2
Embodied Energy, MJ/kg 19
59
Embodied Water, L/kg 47
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 610
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 28
18
Strength to Weight: Bending, points 22 to 24
18
Thermal Diffusivity, mm2/s 13
3.9
Thermal Shock Resistance, points 22 to 25
12

Alloy Composition

Carbon (C), % 0.52 to 0.6
0 to 0.070
Chromium (Cr), % 0 to 0.4
18 to 20
Iron (Fe), % 97.1 to 98.9
61.4 to 71
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Molybdenum (Mo), % 0 to 0.1
2.0 to 2.5
Nickel (Ni), % 0 to 0.4
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.5
Sulfur (S), % 0 to 0.035
0 to 0.030