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EN 1.1203 Steel vs. EN 1.4931 Steel

Both EN 1.1203 steel and EN 1.4931 steel are iron alloys. They have 87% of their average alloy composition in common. There are 30 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 1.1203 steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 12 to 15
17
Fatigue Strength, MPa 210 to 310
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 690 to 780
810
Tensile Strength: Yield (Proof), MPa 340 to 480
620

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
600
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
24
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
11

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 47
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 610
970
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 28
29
Strength to Weight: Bending, points 22 to 24
25
Thermal Diffusivity, mm2/s 13
6.5
Thermal Shock Resistance, points 22 to 25
22

Alloy Composition

Carbon (C), % 0.52 to 0.6
0.2 to 0.26
Chromium (Cr), % 0 to 0.4
11.3 to 12.2
Iron (Fe), % 97.1 to 98.9
83.2 to 86.8
Manganese (Mn), % 0.6 to 0.9
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.1
1.0 to 1.2
Nickel (Ni), % 0 to 0.4
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0
0.25 to 0.35