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ASTM A372 Grade K Steel vs. AWS E308L

Both ASTM A372 grade K steel and AWS E308L are iron alloys. They have 73% 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 A372 grade K steel and the bottom bar is AWS E308L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
40
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 780
580

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 48
16
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
16
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
3.2
Embodied Energy, MJ/kg 24
46
Embodied Water, L/kg 57
150

Common Calculations

PREN (Pitting Resistance) 2.7
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 13
4.1
Thermal Shock Resistance, points 23
15

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.040
Chromium (Cr), % 1.0 to 1.8
18 to 21
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 93.4 to 96.6
62.9 to 72.5
Manganese (Mn), % 0.1 to 0.4
0.5 to 2.5
Molybdenum (Mo), % 0.2 to 0.6
0 to 0.75
Nickel (Ni), % 2.0 to 3.3
9.0 to 11
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030