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ASTM Grade HI Steel vs. ASTM A285 Carbon Steel

Both ASTM grade HI steel and ASTM A285 carbon 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 A285 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
110 to 130
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
30 to 34
Fatigue Strength, MPa 150
150 to 180
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 550
380 to 450
Tensile Strength: Yield (Proof), MPa 270
190 to 230

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1420 to 1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
53
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 23
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.1
1.4
Embodied Energy, MJ/kg 59
18
Embodied Water, L/kg 200
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
94 to 150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
13 to 16
Strength to Weight: Bending, points 19
15 to 17
Thermal Diffusivity, mm2/s 3.9
14
Thermal Shock Resistance, points 12
12 to 14