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ASTM Grade HI Steel vs. ASTM A414 Steel

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

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
110 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
15 to 26
Fatigue Strength, MPa 150
140 to 260
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 550
360 to 590
Tensile Strength: Yield (Proof), MPa 270
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1350
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
49 to 50
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.2 to 7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.3 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
2.2
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 4.1
1.5 to 1.6
Embodied Energy, MJ/kg 59
20 to 22
Embodied Water, L/kg 200
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
69 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 180
100 to 330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
13 to 21
Strength to Weight: Bending, points 19
14 to 20
Thermal Diffusivity, mm2/s 3.9
13
Thermal Shock Resistance, points 12
11 to 17