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ASTM Grade HF Steel vs. AWS E70C-B2L

Both ASTM grade HF steel and AWS E70C-B2L are iron alloys. They have 70% of their average alloy composition in common. There are 28 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 grade HF steel and the bottom bar is AWS E70C-B2L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
21
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 550
580
Tensile Strength: Yield (Proof), MPa 270
460

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 17
3.0
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.6
Embodied Energy, MJ/kg 46
22
Embodied Water, L/kg 150
54

Common Calculations

PREN (Pitting Resistance) 21
3.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 180
550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
20
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 4.2
11
Thermal Shock Resistance, points 12
17

Alloy Composition


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Carbon (C), % 0.2 to 0.4
0 to 0.050
Chromium (Cr), % 18 to 23
1.0 to 1.5
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 60 to 73.8
95.1 to 98
Manganese (Mn), % 0 to 2.0
0.4 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.4 to 0.65
Nickel (Ni), % 8.0 to 12
0 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.0
0.25 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0 to 0.030
Residuals, % 0
0 to 0.5