If we analyze Nezha’s weapons from the perspective of modern metal materials and products, we can make the following assumptions:

1. Fire-Tipped Spear (Similar to a Spear or Lance)

Possible Metal Materials:
•Titanium Alloy (Ti-6Al-4V): High strength, heat resistance, and corrosion resistance while being lightweight—an ideal material for spear-type weapons.
•High Carbon Steel (e.g., T10, 1095 Steel): Hard and wear-resistant, suitable for spearheads, though it has relatively lower toughness.
•Martensitic Stainless Steel (e.g., 440C): High hardness and corrosion resistance, making it suitable for spearheads or decorative parts.
•Nickel-Based Alloy (e.g., Inconel 718): Exceptional heat resistance, capable of withstanding extreme combustion environments (matching the mythical fire attribute).
Corresponding Modern Metal Products:
•Titanium Alloy Spears (e.g., military or sports spears)
•High Carbon Steel or Stainless Steel Spearheads (similar to modern lances or bayonets)
•Gold or Chrome-Plated Spears (as seen in artistic creations or movie props)

2. Universe Ring (Similar to a Throwing Ring or Metal Handguard)

Possible Metal Materials:
•High-Density Alloy (e.g., Tungsten Alloy): High density provides strong impact force upon throwing, similar to modern high-density metal weapons.
•Stainless Steel (316L or 904L): Corrosion-resistant and durable, suitable for high-strength ornaments or weapons.
•Nickel-Cobalt Alloy (e.g., MP35N): High strength, hardness, and heat resistance, making it ideal for high-impact weapons.
Corresponding Modern Metal Products:
•Tungsten Steel Throwing Rings (similar to throwing stars or boomerangs)
•Stainless Steel Wrist Guards or Fighting Rings (comparable to combat gear)
•Aerospace-Grade Alloy Throwing Rings (similar to some movie weapons)

3. Wind-Fire Wheels (Similar to Flight Components)

Possible Metal Materials:
•Aluminum Alloy (e.g., 7075 Aluminum Alloy): Lightweight and heat-resistant, suitable for high-speed rotating components.
•Titanium Alloy (Ti-6Al-4V): High strength and heat resistance, ideal for aerospace components.
•High-Temperature Alloy (e.g., Inconel 625): Resistant to high-temperature oxidation, similar to turbine components in jet engines.
Corresponding Modern Metal Products:
•Aircraft Engine Turbine Blades
•Forged Aluminum Racing Wheels
•Magnetic Levitation Flywheels

4. Red Armillary Sash (Although a Ribbon, What if Made of Metal?)

Possible Metal Materials:
•Shape Memory Alloy (e.g., Nitinol – Nickel-Titanium Alloy): Can change shape at specific temperatures, resembling a flexible metal ribbon.
•Ultra-Thin Stainless Steel Strip (e.g., 0.02mm 301 Stainless Steel Strip): Has some toughness and can be made into flexible metal ribbons.
•Aluminum Alloy Foil (e.g., 1050 Aluminum Foil): Lightweight and suitable for flexible structures.
Corresponding Modern Metal Products:
•Shape Memory Metal Wires
•Ultra-Thin Stainless Steel Strips
•Flexible Metal Mesh

Conclusion