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ASTM Grade HE Steel vs. SAE-AISI 5140 Steel

Both ASTM grade HE steel and SAE-AISI 5140 steel are iron alloys. They have 62% of their average alloy composition in common. There are 30 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 ASTM grade HE steel and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170 to 290
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 10
12 to 29
Fatigue Strength, MPa 160
220 to 570
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 670
560 to 970
Tensile Strength: Yield (Proof), MPa 310
290 to 840

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
420
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 14
45
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.1
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.5
1.4
Embodied Energy, MJ/kg 50
19
Embodied Water, L/kg 190
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 56
76 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 240
220 to 1880
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
20 to 34
Strength to Weight: Bending, points 22
19 to 28
Thermal Diffusivity, mm2/s 3.6
12
Thermal Shock Resistance, points 14
16 to 29

Alloy Composition

Carbon (C), % 0.2 to 0.5
0.38 to 0.43
Chromium (Cr), % 26 to 30
0.7 to 0.9
Iron (Fe), % 53.9 to 65.8
97.3 to 98.1
Manganese (Mn), % 0 to 2.0
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040