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SAE-AISI 1108 Steel vs. SAE-AISI 5135 Steel

Both SAE-AISI 1108 steel and SAE-AISI 5135 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 1108 steel and the bottom bar is SAE-AISI 5135 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 140
150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23 to 34
22
Fatigue Strength, MPa 170 to 260
240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 250 to 280
320
Tensile Strength: Ultimate (UTS), MPa 380 to 440
510
Tensile Strength: Yield (Proof), MPa 220 to 360
340

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
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
45
Thermal Expansion, µm/m-K 12
12

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
2.2
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 46
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95 to 110
100
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 340
300
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 13 to 16
18
Strength to Weight: Bending, points 15 to 16
18
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 12 to 14
16

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.33 to 0.38
Chromium (Cr), % 0
0.8 to 1.1
Iron (Fe), % 98.9 to 99.24
97.3 to 98.1
Manganese (Mn), % 0.6 to 0.8
0.6 to 0.8
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0.080 to 0.13
0 to 0.040