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EN 1.8201 Steel vs. EN 1.7390 Steel

Both EN 1.8201 steel and EN 1.7390 steel are iron alloys. Both are furnished in the normalized and tempered condition. They have a very high 97% of their average alloy composition in common. There are 33 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 1.8201 steel and the bottom bar is EN 1.7390 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
16
Fatigue Strength, MPa 310
310
Impact Strength: V-Notched Charpy, J 38
46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 390
440
Tensile Strength: Ultimate (UTS), MPa 630
710
Tensile Strength: Yield (Proof), MPa 450
480

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 450
510
Melting Completion (Liquidus), °C 1500
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
8.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
4.3
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.7
Embodied Energy, MJ/kg 36
23
Embodied Water, L/kg 59
69

Common Calculations

PREN (Pitting Resistance) 5.7
6.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 530
600
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 18
20

Alloy Composition

Aluminum (Al), % 0 to 0.030
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.040 to 0.1
0 to 0.18
Chromium (Cr), % 1.9 to 2.6
4.0 to 6.0
Iron (Fe), % 93.6 to 96.2
91.9 to 95.3
Manganese (Mn), % 0.1 to 0.6
0.3 to 0.8
Molybdenum (Mo), % 0.050 to 0.3
0.45 to 0.65
Niobium (Nb), % 0.020 to 0.080
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.5
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0.0050 to 0.060
0
Tungsten (W), % 1.5 to 1.8
0
Vanadium (V), % 0.2 to 0.3
0