The workhorse of chemical-processing titanium — commercially pure Grade 2 trades the strength of Ti-6Al-4V for exceptional corrosion resistance and formability. Weldable, ductile, and essentially inert in chloride solutions, seawater, and many acids. Much less expensive than Grade 5 and dominant in non-structural corrosion applications.
Resistant to seawater, wet chlorine, nitric acid, and many organic chemistries that would destroy stainless.
Unalloyed titanium is the baseline for implantable medical devices where MR compatibility matters.
Unlike Grade 5, Grade 2 can be cold-formed and welded with standard TIG/MIG processes.
| Element | Content |
|---|---|
| Titanium | Balance |
| Iron (max) | 0.30% |
| Oxygen (max) | 0.25% |
| Carbon (max) | 0.08% |
| Nitrogen (max) | 0.03% |
| Hydrogen (max) | 0.015% |
Composition per ASTM B265. Specific mill test reports (MTR) available on request for production orders.
Yield strength is ~3× lower than Ti-6Al-4V. Never substitute Grade 2 for Grade 5 in load-bearing applications.
Fine titanium chips are pyrophoric — use flood coolant, never compressed-air blow-off. Store chips in water or sealed container.
Titanium-on-titanium threads gall. Use anti-seize compound or dissimilar-metal fasteners (never cadmium-plated on Ti).
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