## Common ground
All options describe ice screws made from different metals, differing only in material composition.
## Options at a glance
**7318.1X – Iron or steel**
- **Defining trait:** Most common and cost-effective material; offers high strength and durability.
- **Typical examples:** Standard climbing ice screws for general use.
- **Best fit when:** Budget-friendly, robust performance needed in moderate conditions.
**7415.33 – Copper**
- **Defining trait:** Rarely used; not typical for ice screws due to softness and cost.
- **Typical examples:** Not commonly found in climbing gear; possibly decorative or experimental.
- **Best fit when:** Unusual or non-functional design (e.g., art piece).
**7508.90 – Nickel**
- **Defining trait:** High corrosion resistance, but expensive and less strong than steel.
- **Typical examples:** Specialized gear for harsh environments (rare in ice screws).
- **Best fit when:** Extreme weather or saltwater exposure is a concern.
**7616.10 – Aluminium**
- **Defining trait:** Lightweight but less durable; prone to bending under load.
- **Typical examples:** Lightweight gear for alpine hiking or non-technical use.
- **Best fit when:** Weight reduction is critical, and impact resistance is acceptable.
**7907.00 – Zinc**
- **Defining trait:** Very soft and low strength; unsuitable for structural climbing tools.
- **Typical examples:** Not used in functional ice screws.
- **Best fit when:** Non-functional or decorative item only.
**8101.99 – Tungsten**
- **Defining trait:** Extremely hard and dense, but brittle and prohibitively expensive.
- **Typical examples:** Industrial cutting tools, not climbing gear.
- **Best fit when:** Experimental or non-climbing application (e.g., tool tip).
**8102.99 – Molybdenum**
- **Defining trait:** High melting point and strength, but very costly and rare in gear.
- **Typical examples:** Aerospace or high-temp applications.
- **Best fit when:** Extreme temperature environments (not typical for ice screws).
**8104.90 – Magnesium**
- **Defining trait:** Very lightweight; flammable when powdered, less strong than steel.
- **Typical examples:** Lightweight components in specialized gear.
- **Best fit when:** Weight is paramount and fire risk is managed.
**8108.90 – Titanium**
- **Defining trait:** Excellent strength-to-weight ratio and corrosion resistance.
- **Typical examples:** High-end climbing ice screws for professionals.
- **Best fit when:** Performance, durability, and light weight are essential.
## Key differences
| Material | Strength | Weight | Corrosion Resistance | Cost |
|----------------|----------|----------|------------------------|----------|
| Iron/Steel | High | Medium | Low | Low |
| Copper | Low | Medium | High | High |
| Nickel | Medium | Medium | Very High | Very High|
| Aluminium | Low | Low | Medium | Low |
| Zinc | Very Low | Low | Medium | Medium |
| Tungsten | Very High| High | High | Extremely High|
| Molybdenum | High | Medium | High | Very High|
| Magnesium | Low | Very Low | Low | Medium |
| Titanium | High | Low | Very High | High |
## How to choose
- Is weight a top priority? → 7616.10 (Aluminium) or 8108.90 (Titanium)
- Is cost the main concern? → 7318.1X (Iron/Steel)
- Is durability and strength most important? → 7318.1X or 8108.90
- Is corrosion resistance critical? → 8108.90 (Titanium) or 7508.90 (Nickel)
## Overlaps & pitfalls
- Titanium (8108.90) and steel (7318.1X) are both strong and durable, but titanium is lighter and more corrosion-resistant.
- Aluminium and magnesium are lightweight but less suitable for high-load climbing.
- Copper, zinc, tungsten, and molybdenum are not standard in functional ice screws—likely misclassified or non-functional.
- **Note:** If no user context is given, prioritize based on the product’s MAIN function: for real climbing gear, **7318.1X (steel)** or **8108.90 (titanium)** are most realistic