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SAE-AISI 1151 Steel vs. SAE-AISI 8620 Steel

Both SAE-AISI 1151 steel and SAE-AISI 8620 steel are iron alloys. They have a very high 98% 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 1151 steel and the bottom bar is SAE-AISI 8620 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 220
150 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
13 to 31
Fatigue Strength, MPa 260 to 410
270 to 360
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 430 to 480
340 to 420
Tensile Strength: Ultimate (UTS), MPa 710 to 800
520 to 690
Tensile Strength: Yield (Proof), MPa 390 to 660
360 to 570

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 51
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 12
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18
20
Embodied Water, L/kg 46
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 100
86 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 1170
340 to 880
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 28
18 to 24
Strength to Weight: Bending, points 22 to 24
18 to 22
Thermal Diffusivity, mm2/s 14
10
Thermal Shock Resistance, points 22 to 25
15 to 20

Alloy Composition

Carbon (C), % 0.48 to 0.55
0.18 to 0.23
Chromium (Cr), % 0
0.4 to 0.6
Iron (Fe), % 98.3 to 98.7
96.9 to 98
Manganese (Mn), % 0.7 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
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

Comparable Variants