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EN 1.8959 Steel vs. EN 1.0045 Steel

Both EN 1.8959 steel and EN 1.0045 steel are iron alloys. Both are furnished in the hot worked condition. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.8959 steel and the bottom bar is EN 1.0045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
20
Fatigue Strength, MPa 220
230
Impact Strength: V-Notched Charpy, J 30
31
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 350
330
Tensile Strength: Ultimate (UTS), MPa 570
530
Tensile Strength: Yield (Proof), MPa 340
330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
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 39
50
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
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 21
19
Embodied Water, L/kg 52
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
93
Resilience: Unit (Modulus of Resilience), kJ/m3 300
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 10
14
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0 to 0.19
0 to 0.27
Chromium (Cr), % 0.35 to 0.85
0
Copper (Cu), % 0.2 to 0.6
0 to 0.6
Iron (Fe), % 94.9 to 99
96.7 to 100
Manganese (Mn), % 0.45 to 1.6
0 to 1.7
Molybdenum (Mo), % 0 to 0.35
0
Nickel (Ni), % 0 to 0.7
0
Nitrogen (N), % 0 to 0.010
0 to 0.014
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.55
0 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.045
Zirconium (Zr), % 0 to 0.17
0