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SAE-AISI 1084 Steel vs. EN 1.1158 Steel

Both SAE-AISI 1084 steel and EN 1.1158 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1084 steel and the bottom bar is EN 1.1158 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 270
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
23 to 24
Fatigue Strength, MPa 320 to 370
170 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 470 to 550
300 to 320
Tensile Strength: Ultimate (UTS), MPa 780 to 930
470 to 500
Tensile Strength: Yield (Proof), MPa 510 to 600
240 to 310

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
49
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 46
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 89
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 960
150 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 33
17 to 18
Strength to Weight: Bending, points 24 to 27
17 to 18
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 25 to 30
15 to 16

Alloy Composition

Carbon (C), % 0.8 to 0.93
0.22 to 0.29
Chromium (Cr), % 0
0 to 0.4
Iron (Fe), % 98.1 to 98.6
97.6 to 99.38
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.7
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.035