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EN 1.1191 Steel vs. EN 1.7378 Steel

Both EN 1.1191 steel and EN 1.7378 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.1191 steel and the bottom bar is EN 1.7378 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16 to 17
17
Fatigue Strength, MPa 210 to 290
330
Impact Strength: V-Notched Charpy, J 16 to 29
38
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
74
Shear Strength, MPa 380 to 430
430
Tensile Strength: Ultimate (UTS), MPa 630 to 700
700
Tensile Strength: Yield (Proof), MPa 310 to 440
490

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 400
460
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
4.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.3
Embodied Energy, MJ/kg 19
33
Embodied Water, L/kg 47
61

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 100
110
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 510
630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 25
25
Strength to Weight: Bending, points 21 to 22
22
Thermal Diffusivity, mm2/s 13
10
Thermal Shock Resistance, points 20 to 22
20

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Boron (B), % 0
0.0015 to 0.0070
Carbon (C), % 0.42 to 0.5
0.050 to 0.1
Chromium (Cr), % 0 to 0.4
2.2 to 2.6
Iron (Fe), % 97.3 to 99.08
94.6 to 96.1
Manganese (Mn), % 0.5 to 0.8
0.3 to 0.7
Molybdenum (Mo), % 0 to 0.1
0.9 to 1.1
Nickel (Ni), % 0 to 0.4
0
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0.15 to 0.45
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0.050 to 0.1
Vanadium (V), % 0
0.2 to 0.3