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ASTM Grade HK Steel vs. Solder Alloy 137

ASTM grade HK steel belongs to the iron alloys classification, while solder alloy 137 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HK steel and the bottom bar is solder alloy 137.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
24
Elongation at Break, % 11
19
Poisson's Ratio 0.27
0.42
Shear Modulus, GPa 79
8.3
Tensile Strength: Ultimate (UTS), MPa 500
34

Thermal Properties

Latent Heat of Fusion, J/g 310
33
Melting Completion (Liquidus), °C 1400
270
Melting Onset (Solidus), °C 1350
190
Specific Heat Capacity, J/kg-K 480
150
Thermal Conductivity, W/m-K 15
38
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
7.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
85
Density, g/cm3 7.8
10
Embodied Carbon, kg CO2/kg material 4.4
6.3
Embodied Energy, MJ/kg 63
100
Embodied Water, L/kg 200
660

Common Calculations

Stiffness to Weight: Axial, points 14
1.3
Stiffness to Weight: Bending, points 25
9.2
Strength to Weight: Axial, points 18
0.9
Strength to Weight: Bending, points 18
2.2
Thermal Diffusivity, mm2/s 3.9
25
Thermal Shock Resistance, points 11
3.7

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0.5 to 3.0
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0.2 to 0.6
0
Chromium (Cr), % 24 to 28
0
Copper (Cu), % 0
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 44.8 to 57.8
0 to 0.020
Lead (Pb), % 0
75.9 to 80
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
19.5 to 20.5
Zinc (Zn), % 0
0 to 0.0010