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EN 1.7767 Steel vs. SAE-AISI 1018 Steel

Both EN 1.7767 steel and SAE-AISI 1018 steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7767 steel and the bottom bar is SAE-AISI 1018 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
130 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
17 to 27
Fatigue Strength, MPa 320 to 340
180 to 270
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Shear Strength, MPa 420 to 430
280 to 300
Tensile Strength: Ultimate (UTS), MPa 670 to 690
430 to 480
Tensile Strength: Yield (Proof), MPa 460 to 500
240 to 400

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 480
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 4.5
1.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 2.4
1.4
Embodied Energy, MJ/kg 33
18
Embodied Water, L/kg 64
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
75 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 570 to 650
150 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24
15 to 17
Strength to Weight: Bending, points 22
16 to 17
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 19 to 20
14 to 15

Alloy Composition

Carbon (C), % 0.1 to 0.15
0.15 to 0.2
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 93.8 to 95.8
98.8 to 99.25
Manganese (Mn), % 0.3 to 0.6
0.6 to 0.9
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0 to 0.25
0
Niobium (Nb), % 0 to 0.070
0
Nitrogen (N), % 0 to 0.012
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.15
0
Sulfur (S), % 0 to 0.0050
0 to 0.050
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0.2 to 0.3
0