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ASTM A227 Spring Steel vs. Solder Alloy 301

ASTM A227 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 (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is solder alloy 301.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
23
Elastic (Young's, Tensile) Modulus, GPa 190
40
Elongation at Break, % 12
51
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
15
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
55
Tensile Strength: Yield (Proof), MPa 1430 to 1850
49

Thermal Properties

Latent Heat of Fusion, J/g 250
55
Melting Completion (Liquidus), °C 1450
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 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
4.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 1.4
13
Embodied Energy, MJ/kg 19
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
27
Stiffness to Weight: Axial, points 13
2.5
Stiffness to Weight: Bending, points 24
13
Strength to Weight: Axial, points 61 to 79
1.8
Strength to Weight: Bending, points 41 to 48
3.7
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 55 to 71
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), % 0.45 to 0.85
0
Copper (Cu), % 0
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 97.4 to 99.1
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Manganese (Mn), % 0.3 to 1.3
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 0.050
0
Tin (Sn), % 0
41 to 43
Zinc (Zn), % 0
0 to 0.0010