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AWS E120C-K4 vs. AISI 439 Stainless Steel

Both AWS E120C-K4 and AISI 439 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is AWS E120C-K4 and the bottom bar is AISI 439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
23
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 950
490
Tensile Strength: Yield (Proof), MPa 840
250

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Melting Completion (Liquidus), °C 1460
1510
Melting Onset (Solidus), °C 1410
1430
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 41
25
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
9.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.3
Embodied Energy, MJ/kg 23
34
Embodied Water, L/kg 54
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1880
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 34
18
Strength to Weight: Bending, points 27
18
Thermal Diffusivity, mm2/s 11
6.7
Thermal Shock Resistance, points 28
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 0.15 to 0.65
17 to 19
Copper (Cu), % 0 to 0.35
0
Iron (Fe), % 92.1 to 98.4
77.1 to 82.8
Manganese (Mn), % 0.75 to 2.3
0 to 1.0
Molybdenum (Mo), % 0.25 to 0.65
0
Nickel (Ni), % 0.5 to 2.5
0 to 0.5
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
0.2 to 1.1
Vanadium (V), % 0 to 0.030
0
Residuals, % 0 to 0.5
0