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ASTM A387 Grade 91 Class 2 vs. Solder Alloy 801

ASTM A387 grade 91 class 2 belongs to the iron alloys classification, while solder alloy 801 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 A387 grade 91 class 2 and the bottom bar is solder alloy 801.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
22
Elastic (Young's, Tensile) Modulus, GPa 190
53
Elongation at Break, % 20
33
Poisson's Ratio 0.28
0.35
Shear Modulus, GPa 75
20
Tensile Strength: Ultimate (UTS), MPa 670
55

Thermal Properties

Latent Heat of Fusion, J/g 270
64
Melting Completion (Liquidus), °C 1460
200
Melting Onset (Solidus), °C 1420
200
Specific Heat Capacity, J/kg-K 470
240
Thermal Conductivity, W/m-K 26
61
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
15
Electrical Conductivity: Equal Weight (Specific), % IACS 10
19

Otherwise Unclassified Properties

Density, g/cm3 7.8
7.2
Embodied Carbon, kg CO2/kg material 2.6
14
Embodied Energy, MJ/kg 37
240
Embodied Water, L/kg 88
1140

Common Calculations

Stiffness to Weight: Axial, points 14
4.1
Stiffness to Weight: Bending, points 25
17
Strength to Weight: Axial, points 24
2.1
Strength to Weight: Bending, points 22
4.4
Thermal Diffusivity, mm2/s 6.9
36
Thermal Shock Resistance, points 19
3.3

Alloy Composition

Aluminum (Al), % 0 to 0.020
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 87.3 to 90.3
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.010
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.2 to 0.5
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
89.9 to 91.5
Titanium (Ti), % 0 to 0.010
0
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
8.5 to 9.5
Zirconium (Zr), % 0 to 0.010
0