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EN 1.8898 Steel vs. EN 1.0045 Steel

Both EN 1.8898 steel and EN 1.0045 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8898 steel and the bottom bar is EN 1.0045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 18
20
Fatigue Strength, MPa 330
230
Impact Strength: V-Notched Charpy, J 45
31
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370
330
Tensile Strength: Ultimate (UTS), MPa 600
530
Tensile Strength: Yield (Proof), MPa 490
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
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 49
50
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 22
19
Embodied Water, L/kg 48
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
93
Resilience: Unit (Modulus of Resilience), kJ/m3 650
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 20
18
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 18
17

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Carbon (C), % 0 to 0.16
0 to 0.27
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 96.7 to 99.98
96.7 to 100
Manganese (Mn), % 0 to 1.7
0 to 1.7
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 0 to 0.3
0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.025
0 to 0.014
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.045
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0