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ASTM A414 Steel vs. ASTM A387 Grade 9 Steel

Both ASTM A414 steel and ASTM A387 grade 9 steel are iron alloys. 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 A414 steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 180
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 26
20 to 21
Fatigue Strength, MPa 140 to 260
160 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 230 to 370
310 to 380
Tensile Strength: Ultimate (UTS), MPa 360 to 590
500 to 600
Tensile Strength: Yield (Proof), MPa 190 to 350
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
600
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 49 to 50
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2 to 7.3
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3 to 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
6.5
Density, g/cm3 7.8 to 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.5 to 1.6
2.1
Embodied Energy, MJ/kg 20 to 22
28
Embodied Water, L/kg 48
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 69 to 130
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 330
140 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 21
18 to 21
Strength to Weight: Bending, points 14 to 20
18 to 20
Thermal Diffusivity, mm2/s 13
6.9
Thermal Shock Resistance, points 11 to 17
14 to 17