Bar and Rod
Plate and Sheet
Strip
Pipe and Tube
Wire
Welding
Powder Material
Cast Products
Forged Products
Fittings
Fastening
Round Bar:
φ2–500 mm, 1–6 m length
Flat/Square Bar:
4–100 mm thickness/width
Hex Bar:
A/F 3–100 mm
Hollow Bar:
OD 20–300 mm
Sheet:
0.3–6 mm thickness
Medium Plate:
6–25 mm thickness
Heavy Plate:
25–100 mm thickness
Standard Strip:
0.05–3 mm thick,
10–600 mm wide
Precision strip:
0.01–0.5 mm thick,
tight tolerance ±0.005 mm
Foil:
0.005–0.1 mm thick
Seamless Tube:
OD 6–450 mm,
WT 1–50 mm,
1–12 m length
Welded Tube:
OD 10–600 mm,
WT 1–20 mm
Capillary Tube:
OD 1–10 mm,
WT 0.1–2 mm
Wire Form:
Cold Drawn Wire,
Bright Wire,
Spring Wire,
Fine Wire,
Ultra-fine Wire
General Diameter:
φ0.1–10 mm
Coil Weight:
50–500 kg,
customizable tolerance
Solid Wire:
φ0.8–4.0 mm
Flux-cored Wire:
φ1.2–4.0 mm
Welding Rod:
φ2.0–5.0 mm
Powder Form:
AM 3D Printing Powder,
Spherical Powder,
Gas-atomized Powder,
Water-atomized Powder
Particle Size:
10–150 μm
Sphericity:
≥90% for AM grade
Cast Ingot:
φ200–800 mm
Precision Casting:
min wall 0.5 mm
Cast Pipe:
OD 100–600 mm,
WT 10–50 mm
Forged Bar:
Φ35–500 mm
Forged Ring:
OD 200–2000 mm
Forging Weight:
1–5000 kg
Fittings Form:
Elbow, Tee, Reducer, Flange, Cap, Outlet, Lap Joint
Size range:
1/2''–24'' (DN15–DN600)
Wall thickness:
Sch10–Sch160, STD, XS, XXS
Pressure Class:
150–2500 LB
Fastening Form:
Bolt, Nut, Screw, Stud, Washer, Pin, Rivet
Metric: M3–M64
Imperial: #4–2.5''
Length: 6–500 mm
R50250 is the first of the commercially pure (unalloyed) titanium grades. This datasheet presents the material within the American (ASTM / ASME / UNS) standard system.
With a minimum titanium content of about 99.1% and the lowest interstitial (oxygen and iron) content of the commercially pure grades, R50250 is the softest and most ductile titanium, offering the best cold formability and the highest impact toughness. Oxygen acts as a strengthening element in titanium but lowers ductility, so the deliberately low oxygen and iron give R50250 its outstanding formability at the expense of strength. It combines this formability with the excellent corrosion resistance characteristic of titanium — a stable, self-healing oxide film gives high resistance to seawater, chlorides, nitric acid and many oxidizing media — together with good weldability and excellent biocompatibility.
Typical applications include plate heat exchangers and condenser tubing, deep-drawn and severely formed components, chemical and marine equipment, cryogenic vessels, cathodic-protection anodes, and medical implants and surgical instruments.
| Property | Value | Unit |
|---|---|---|
| Density | 4.51 | g/cm³ |
| Melting point | 1670 | °C |
| Elastic modulus | 103 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 8.6 | µm/m·°C |
| Thermal conductivity (20 °C) | 16 | W/m·K |
| Specific heat (20 °C) | 523 | J/kg·K |
| Structure | Alpha (hexagonal close-packed) | — |
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Titanium | Ti | Balance | — | Base element (≥99.1%) |
| Oxygen | O | — | 0.18 | Interstitial; strength vs ductility |
| Iron | Fe | — | 0.20 | Residual; lowest of CP grades |
| Carbon | C | — | 0.08 | Interstitial impurity |
| Nitrogen | N | — | 0.03 | Interstitial impurity |
| Hydrogen | H | — | 0.015 | Interstitial impurity |
Annealed condition, per ASTM B265 for UNS R50250.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (UTS) | ≥240 MPa (35 ksi) |
| Annealed | 0.2% yield strength | 170–310 MPa (25–45 ksi) |
| Annealed | Elongation at break | ≥24 % |
| Annealed | Hardness | ~120 HB |
| — | Elastic modulus | 103 GPa |
Confirm against the mill test report. Properties cannot be increased by heat treatment; cold work raises strength.
| Environment | Performance | Notes |
|---|---|---|
| Seawater / marine | Excellent | Self-healing oxide film |
| Chlorides / brine | Excellent | Resists pitting and crevice attack |
| Oxidizing acids (e.g. nitric) | Excellent | Stable passive film |
| Reducing acids | Limited | Less resistant than in oxidizing media |
| Chloride stress-corrosion cracking | Excellent | Highly resistant |
The protective titanium-oxide film gives excellent resistance to seawater, chlorides and oxidizing media; resistance is lower in strongly reducing acids unless inhibited.
A commercially pure (alpha) titanium; not hardenable by heat treatment. Properties are set by annealing and cold work.
Anneal Anneal at approximately 650–760 °C and air cool to relieve stress and restore ductility after cold work. Protect from oxygen, nitrogen and hydrogen pickup at temperature; avoid hydrogen-bearing atmospheres.
Excellent weldability with inert-gas processes; the weld must be fully shielded (including the root and cooling weld) from atmospheric contamination, which causes embrittlement.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Excellent | AWS A5.16 ERTi-1 (matching) |
| GMAW / MIG | Good | ERTi-1 |
| Resistance / spot | Good | — |
Use full inert-gas shielding and clean, contamination-free surfaces; avoid hydrogen, oxygen and nitrogen pickup.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Moderate; sharp tools, low speed, high feed |
| Work hardening | Low for CP titanium; avoid galling |
| Coolant | Generous non-chlorinated coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Excellent — deep drawing, severe bending, stamping |
| Hot forming | ~600–800 °C; protect from contamination; anneal afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Heat transfer | Plate heat exchangers, condenser tubing | Formability + corrosion resistance |
| Chemical / marine | Pickling baskets, tanks, harsh-environment parts | Corrosion resistance |
| Medical | Implants, surgical instruments | Biocompatibility + formability |
| Aerospace / cryogenic | Airframe and honeycomb parts, cryogenic vessels | Toughness + formability |
| Product Form | ASTM Standard | ASME Code |
|---|---|---|
| Sheet, strip and plate | ASTM B265 | ASME SB-265 |
| Bar and billet | ASTM B348 | ASME SB-348 |
| Seamless / welded tube | ASTM B338 | ASME SB-338 |
| Welding wire | AWS A5.16 ERTi-1 | — |
Commercially pure (unalloyed) titanium, softest grade. UNS R50250.
| UNS | Ti % | O max % | Fe max % | Best Used For |
|---|---|---|---|---|
| R50250 | ≥99.1 | 0.18 | 0.20 | Softest CP titanium; deep drawing, max formability |
| R50400 | ≥99.0 | 0.25 | 0.30 | General-purpose CP titanium; best balance (Grade 2) |
| R50550 | ≥99.0 | 0.35 | 0.30 | Higher-strength CP titanium (Grade 3) |
| R50700 | ≥98.9 | 0.40 | 0.50 | Strongest CP titanium (Grade 4) |
| R52400 | ≥98.9 | 0.25 | 0.30 | CP titanium + Pd; enhanced acid resistance (Grade 7) |
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