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ASTM A266 Carbon Steel vs. ASTM Grade HI Steel

Both ASTM A266 carbon steel and ASTM grade HI steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is ASTM grade HI steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 21 to 26
11
Fatigue Strength, MPa 170 to 200
150
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 500 to 600
550
Tensile Strength: Yield (Proof), MPa 230 to 290
270

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1420
1350
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51 to 52
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
23
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
4.1
Embodied Energy, MJ/kg 18 to 19
59
Embodied Water, L/kg 46 to 47
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
52
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
20
Strength to Weight: Bending, points 18 to 20
19
Thermal Diffusivity, mm2/s 14
3.9
Thermal Shock Resistance, points 16 to 19
12