Shermanium (PLUS)

| Property | Value / Description | Grade | | :--- | :--- | :--- | | | 17.0 – 18.5 g/cm³ (approx. 1.7x lead, 2.3x steel) | High | | Tensile Strength | 600 – 900 MPa (as-sintered) | Very High | | Hardness | 24 – 32 HRC | Medium-High | | Elongation | 5 – 15% (brittle compared to steel, ductile for tungsten) | Moderate | | Magnetic Permeability | <1.05 (for Cu-bonded grades) | Excellent (non-magnetic) | | Corrosion Resistance | Good (resists salt spray, weak acids; not for strong alkalis) | Good |

Shermanium is not a naturally occurring element nor a commercially standardized alloy. Instead, it is a proprietary, high-density tungsten-based alloy (typically W-Ni-Fe or W-Ni-Cu), often marketed under trade names by specialized engineering firms (notably those serving the defense, aerospace, and radiation shielding industries). The name evokes "strength and density," playing on the metaphor of a Sherman tank. Its primary claims to fame are: extremely high density (17–18.5 g/cc), excellent machinability for a refractory metal, and good corrosion resistance. Rating: 4.5/5 (Excellent for niche industrial applications; unsuitable for general consumer use.) 1. Material Composition & Properties Unlike generic tungsten alloy (90-97% W), Shermanium is optimized for a specific balance of density, ductility, and non-magnetic properties (depending on the grade). shermanium

It is not like aluminum. Speeds must be reduced by 70-80% vs. steel. Coolant is mandatory. Abrasive wear on tools is moderate. | Property | Value / Description | Grade

(Specialist material, superb in niche, poor for general use) Note: Because "Shermanium" is a proprietary or colloquial trade name, actual composition varies by supplier. Always request a material certification (MIL-T-21014 or ASTM B777) before specifying. No affiliation with any manufacturer. The name evokes "strength and density," playing on