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EN 1.8903 Steel vs. EN 1.1133 Steel

Both EN 1.8903 steel and EN 1.1133 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8903 steel and the bottom bar is EN 1.1133 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
19 to 24
Fatigue Strength, MPa 330
230 to 310
Impact Strength: V-Notched Charpy, J 58
45 to 48
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 390
370 to 380
Tensile Strength: Ultimate (UTS), MPa 630
580 to 620
Tensile Strength: Yield (Proof), MPa 480
320 to 460

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
400
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 46
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.5
Embodied Energy, MJ/kg 24
19
Embodied Water, L/kg 51
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
270 to 550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
21 to 22
Strength to Weight: Bending, points 21
20 to 21
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 18
18 to 19

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0 to 0.22
0.17 to 0.23
Chromium (Cr), % 0 to 0.35
0 to 0.4
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 95 to 99.05
96.9 to 98.8
Manganese (Mn), % 1.0 to 1.8
1.0 to 1.5
Molybdenum (Mo), % 0 to 0.13
0 to 0.1
Nickel (Ni), % 0 to 0.85
0 to 0.4
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.027
0
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.65
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035
Titanium (Ti), % 0 to 0.060
0
Vanadium (V), % 0 to 0.22
0