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AWS E309H vs. Solder Alloy 121

AWS E309H belongs to the iron alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS E309H and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
21
Elongation at Break, % 34
25
Poisson's Ratio 0.27
0.43
Shear Modulus, GPa 78
7.5
Tensile Strength: Ultimate (UTS), MPa 620
32

Thermal Properties

Latent Heat of Fusion, J/g 300
29
Melting Completion (Liquidus), °C 1410
290
Melting Onset (Solidus), °C 1370
230
Specific Heat Capacity, J/kg-K 480
140
Thermal Conductivity, W/m-K 15
31
Thermal Expansion, µm/m-K 14
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 20
80
Density, g/cm3 7.8
11
Embodied Carbon, kg CO2/kg material 3.7
5.6
Embodied Energy, MJ/kg 52
93
Embodied Water, L/kg 180
580

Common Calculations

Stiffness to Weight: Axial, points 14
1.1
Stiffness to Weight: Bending, points 25
8.6
Strength to Weight: Axial, points 22
0.84
Strength to Weight: Bending, points 21
2.1
Thermal Diffusivity, mm2/s 4.0
20
Thermal Shock Resistance, points 16
3.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.040 to 0.15
0
Chromium (Cr), % 22 to 25
0
Copper (Cu), % 0 to 0.75
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 55.8 to 65.5
0 to 0.020
Lead (Pb), % 0
83.4 to 85.5
Manganese (Mn), % 0.5 to 2.5
0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 12 to 14
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
14.5 to 15.5
Zinc (Zn), % 0
0 to 0.0010