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EN 1.0034 Steel vs. SAE-AISI 50B50 Steel

Both EN 1.0034 steel and SAE-AISI 50B50 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.0034 steel and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 97 to 110
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.0 to 32
22
Fatigue Strength, MPa 140 to 170
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 220 to 230
370
Tensile Strength: Ultimate (UTS), MPa 340 to 380
590
Tensile Strength: Yield (Proof), MPa 180 to 280
370

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
45
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 45
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 95
110
Resilience: Unit (Modulus of Resilience), kJ/m3 84 to 210
370
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 13
21
Strength to Weight: Bending, points 14 to 15
20
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 11 to 12
17

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0 to 0.15
0.48 to 0.53
Chromium (Cr), % 0
0.4 to 0.6
Iron (Fe), % 98.7 to 100
97.4 to 98.2
Manganese (Mn), % 0 to 0.7
0.75 to 1.0
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