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ASTM Grade HK Steel vs. AWS E307

Both ASTM grade HK steel and AWS E307 are iron alloys. They have 83% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HK steel and the bottom bar is AWS E307.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
34
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
78
Tensile Strength: Ultimate (UTS), MPa 500
660

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
3.5
Embodied Energy, MJ/kg 63
49
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 27
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 3.9
4.1
Thermal Shock Resistance, points 11
17

Alloy Composition

Carbon (C), % 0.2 to 0.6
0.040 to 0.14
Chromium (Cr), % 24 to 28
18 to 21.5
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 44.8 to 57.8
59.6 to 69.2
Manganese (Mn), % 0 to 2.0
3.3 to 4.8
Molybdenum (Mo), % 0 to 0.5
0.5 to 1.5
Nickel (Ni), % 18 to 22
9.0 to 10.7
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030