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EN 1.0034 Steel vs. SAE-AISI 4419 Steel

Both EN 1.0034 steel and SAE-AISI 4419 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0034 steel and the bottom bar is SAE-AISI 4419 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 97 to 110
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.0 to 32
23
Fatigue Strength, MPa 140 to 170
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 220 to 230
310
Tensile Strength: Ultimate (UTS), MPa 340 to 380
490
Tensile Strength: Yield (Proof), MPa 180 to 280
270

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
50
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 45
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 95
97
Resilience: Unit (Modulus of Resilience), kJ/m3 84 to 210
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 13
17
Strength to Weight: Bending, points 14 to 15
18
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 11 to 12
14

Alloy Composition

Carbon (C), % 0 to 0.15
0.18 to 0.23
Iron (Fe), % 98.7 to 100
98.1 to 98.8
Manganese (Mn), % 0 to 0.7
0.45 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.35
0.15 to 0.35
Sulfur (S), % 0 to 0.045
0 to 0.040