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Type 2 Pewter vs. ASTM A387 Grade 91 Class 2

Type 2 pewter belongs to the otherwise unclassified metals classification, while ASTM A387 grade 91 class 2 belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is Type 2 pewter and the bottom bar is ASTM A387 grade 91 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 13 to 23
200
Elastic (Young's, Tensile) Modulus, GPa 52
190
Poisson's Ratio 0.35
0.28
Shear Modulus, GPa 19
75
Tensile Strength: Ultimate (UTS), MPa 52 to 68
670

Thermal Properties

Latent Heat of Fusion, J/g 69
270
Melting Completion (Liquidus), °C 300
1460
Melting Onset (Solidus), °C 240
1420
Specific Heat Capacity, J/kg-K 220
470
Thermal Expansion, µm/m-K 21
13

Otherwise Unclassified Properties

Base Metal Price, % relative 75
7.0
Density, g/cm3 7.3
7.8
Embodied Carbon, kg CO2/kg material 12
2.6
Embodied Energy, MJ/kg 210
37
Embodied Water, L/kg 1220
88

Common Calculations

Stiffness to Weight: Axial, points 3.9
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.0 to 2.6
24
Strength to Weight: Bending, points 4.3 to 5.1
22
Thermal Shock Resistance, points 3.4 to 4.4
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Antimony (Sb), % 5.0 to 7.5
0
Arsenic (As), % 0 to 0.050
0
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 1.5 to 3.0
0
Iron (Fe), % 0 to 0.015
87.3 to 90.3
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0.2 to 0.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 90 to 93
0
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.0050
0
Zirconium (Zr), % 0
0 to 0.010