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ASTM A387 Grade 2 Steel vs. SAE-AISI 1340 Steel

Both ASTM A387 grade 2 steel and SAE-AISI 1340 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 ASTM A387 grade 2 steel and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 170
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
11 to 23
Fatigue Strength, MPa 190 to 250
220 to 390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 300 to 350
340 to 440
Tensile Strength: Ultimate (UTS), MPa 470 to 550
540 to 730
Tensile Strength: Yield (Proof), MPa 260 to 350
300 to 620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 50
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
240 to 1040
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 20
19 to 26
Strength to Weight: Bending, points 17 to 19
19 to 23
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 14 to 16
17 to 23

Alloy Composition

Carbon (C), % 0.050 to 0.21
0.38 to 0.43
Chromium (Cr), % 0.5 to 0.8
0
Iron (Fe), % 97.1 to 98.3
97.2 to 97.9
Manganese (Mn), % 0.55 to 0.8
1.6 to 1.9
Molybdenum (Mo), % 0.45 to 0.6
0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0.15 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.040

Comparable Variants