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SAE-AISI 1340 Steel vs. ASTM Grade HE Steel

Both SAE-AISI 1340 steel and ASTM grade HE steel are iron alloys. They have 61% 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 SAE-AISI 1340 steel and the bottom bar is ASTM grade HE steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 23
10
Fatigue Strength, MPa 220 to 390
160
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 540 to 730
670
Tensile Strength: Yield (Proof), MPa 300 to 620
310

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51
14
Thermal Expansion, µm/m-K 12
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
19
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.5
Embodied Energy, MJ/kg 19
50
Embodied Water, L/kg 48
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 110
56
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 1040
240
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19 to 26
24
Strength to Weight: Bending, points 19 to 23
22
Thermal Diffusivity, mm2/s 14
3.6
Thermal Shock Resistance, points 17 to 23
14

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.2 to 0.5
Chromium (Cr), % 0
26 to 30
Iron (Fe), % 97.2 to 97.9
53.9 to 65.8
Manganese (Mn), % 1.6 to 1.9
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
8.0 to 11
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.040