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EN 1.1121 Steel vs. SAE-AISI 1117 Steel

Both EN 1.1121 steel and SAE-AISI 1117 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 (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.1121 steel and the bottom bar is SAE-AISI 1117 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 28
17 to 26
Fatigue Strength, MPa 160
190 to 300
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 260
320 to 330
Tensile Strength: Ultimate (UTS), MPa 400
490 to 540
Tensile Strength: Yield (Proof), MPa 210
260 to 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 53
52
Thermal Expansion, µm/m-K 12
12

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
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 45
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
86 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 110
180 to 550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14
17 to 19
Strength to Weight: Bending, points 15
18 to 19
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 13
15 to 17

Alloy Composition

Carbon (C), % 0.070 to 0.13
0.14 to 0.2
Iron (Fe), % 98.8 to 99.63
98.3 to 98.8
Manganese (Mn), % 0.3 to 0.6
1.0 to 1.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.035
0.080 to 0.13