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EN 1.0044 Steel vs. EN 1.8897 Steel

Both EN 1.0044 steel and EN 1.8897 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0044 steel and the bottom bar is EN 1.8897 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
20
Fatigue Strength, MPa 180
320
Impact Strength: V-Notched Charpy, J 31
46
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300
350
Tensile Strength: Ultimate (UTS), MPa 470
560
Tensile Strength: Yield (Proof), MPa 250
460

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 51
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 18
22
Embodied Water, L/kg 47
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85
110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 17
19
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 15
16

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Carbon (C), % 0 to 0.25
0 to 0.16
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 97.4 to 100
96.8 to 99.98
Manganese (Mn), % 0 to 1.6
0 to 1.7
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0 to 0.014
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.045
0 to 0.030
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.12