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SAE-AISI 1018 Steel vs. SAE-AISI 94B17 Steel

Both SAE-AISI 1018 steel and SAE-AISI 94B17 steel are iron alloys. They have a very high 99% of their average alloy composition in common. 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 SAE-AISI 1018 steel and the bottom bar is SAE-AISI 94B17 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 140
130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 27
25
Fatigue Strength, MPa 180 to 270
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 280 to 300
280
Tensile Strength: Ultimate (UTS), MPa 430 to 480
440
Tensile Strength: Yield (Proof), MPa 240 to 400
270

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
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
39
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
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 46
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 100
96
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
200
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 17
16
Strength to Weight: Bending, points 16 to 17
16
Thermal Diffusivity, mm2/s 14
10
Thermal Shock Resistance, points 14 to 15
13

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.15 to 0.2
0.15 to 0.2
Chromium (Cr), % 0
0.3 to 0.5
Iron (Fe), % 98.8 to 99.25
97.1 to 98.3
Manganese (Mn), % 0.6 to 0.9
0.75 to 1.0
Molybdenum (Mo), % 0
0.080 to 0.15
Nickel (Ni), % 0
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0 to 0.050
0 to 0.040