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ASTM A231 Spring Steel vs. Solder Alloy 301

ASTM A231 spring steel belongs to the iron alloys classification, while solder alloy 301 belongs to the otherwise unclassified metals. 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 A231 spring steel and the bottom bar is solder alloy 301.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
23
Elastic (Young's, Tensile) Modulus, GPa 190
40
Elongation at Break, % 14
51
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
15
Tensile Strength: Ultimate (UTS), MPa 1790
55
Tensile Strength: Yield (Proof), MPa 1570
49

Thermal Properties

Latent Heat of Fusion, J/g 250
55
Melting Completion (Liquidus), °C 1460
140
Melting Onset (Solidus), °C 1410
140
Specific Heat Capacity, J/kg-K 470
160
Thermal Conductivity, W/m-K 52
19
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
4.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 2.0
13
Embodied Energy, MJ/kg 28
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
27
Stiffness to Weight: Axial, points 13
2.5
Stiffness to Weight: Bending, points 24
13
Strength to Weight: Axial, points 64
1.8
Strength to Weight: Bending, points 42
3.7
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 53
7.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
56.5 to 59
Cadmium (Cd), % 0
0 to 0.0020
Carbon (C), % 0.48 to 0.53
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 96.7 to 97.7
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0.7 to 0.9
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
41 to 43
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
0 to 0.0010