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
TiNi0.7Mo0.3 is the designation for a corrosion-resistant titanium alloy containing about 0.3% molybdenum and 0.8% nickel. This datasheet presents the material within the EN symbol designation system.
With small additions of molybdenum and nickel rather than precious metals, TiNi0.7Mo0.3 combines excellent elevated-temperature strength with excellent weldability and notably improved crevice-corrosion resistance compared with the pure titanium grades. It is one of the low-alloy titanium materials developed for the chemical industry, offering higher strength than the unalloyed grades and good resistance in both oxidizing and reducing environments, approaching the palladium-bearing grades in many hot, chloride-containing or low-pH media while being considerably more economical. It is readily formed and welded.
Typical applications include heat exchangers, chemical-processing and pulp-and-paper equipment, marine components, geothermal and brine-handling equipment, and vessels operating in hot chloride environments.
| Property | Value | Unit |
|---|---|---|
| Density | 4.51 | g/cm³ |
| Melting point | 1660 | °C |
| Elastic modulus | 103 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 8.6 | µm/m·°C |
| Thermal conductivity (20 °C) | 19 | W/m·K |
| Specific heat (20 °C) | 540 | J/kg·K |
| Structure | Alpha (hexagonal close-packed) | — |
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Titanium | Ti | Balance | — | Base element |
| Molybdenum | Mo | 0.20 | 0.40 | Strength; corrosion resistance |
| Nickel | Ni | 0.60 | 0.90 | Crevice-corrosion resistance |
| Iron | Fe | — | 0.30 | Residual |
| Oxygen | O | — | 0.25 | Interstitial; strength |
| Carbon | C | — | 0.08 | Interstitial impurity |
| Nitrogen | N | — | 0.03 | Interstitial impurity |
| Hydrogen | H | — | 0.015 | Interstitial impurity |
Annealed condition, per DIN 17850 / EN reference data for W.Nr. 3.7105.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (Rm) | 480–620 MPa |
| Annealed | 0.2% proof strength (Rp0.2) | ≥345 MPa |
| Annealed | Elongation at break | ≥18 % |
| Annealed | Hardness | ~200 HV |
| — | Elastic modulus | 103 GPa |
Values per DIN 17850; higher strength than the pure titanium grades; not strengthened by heat treatment. Confirm against the inspection certificate (EN 10204).
| Environment | Performance | Notes |
|---|---|---|
| Crevice corrosion (hot chlorides) | Excellent | Major advantage over CP grades |
| Reducing acids | Very Good | Better than unalloyed titanium |
| Oxidizing media | Excellent | Stable passive film |
| Seawater / brine | Excellent | Resists chloride attack |
| Elevated-temperature strength | Very Good | Retains strength when hot |
The molybdenum and nickel additions give crevice-corrosion resistance well above the commercially pure grades — approaching the palladium-bearing grades in many hot chloride and low-pH media — at lower cost.
A corrosion-resistant titanium alloy; not hardenable by heat treatment. Properties are set by annealing.
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.
Excellent weldability with inert-gas processes; the weld pool and cooling weld must be fully shielded from atmospheric contamination, which causes embrittlement. Matching filler is used.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Excellent | Matching Ti-0.3Mo-0.8Ni filler |
| GMAW / MIG | Good | Matching filler |
| 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-to-moderate; avoid galling |
| Coolant | Generous non-chlorinated coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Good — bending, roll forming, drawing |
| Hot forming | ~600–800 °C; protect from contamination; anneal afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Chemical processing | Heat exchangers, vessels, columns | Crevice corrosion resistance + strength |
| Pulp and paper | Bleaching and process equipment | Hot chloride resistance |
| Marine / geothermal | Brine-handling equipment, components | Corrosion resistance |
| Power | Condenser and heat-transfer parts | Corrosion resistance + strength |
| Product Form | DIN / EN Standard | Notes |
|---|---|---|
| Sheet, strip and plate | DIN 17860 · W.Nr. 3.7105 | TiNi0.7Mo0.3 |
| Bar, rod and wire | DIN 17850 · W.Nr. 3.7105 | — |
| Seamless / welded tube | DIN 17869 · W.Nr. 3.7105 | — |
| Inspection documents | EN 10204 | — |
Ti-0.3Mo-0.8Ni corrosion-resistant titanium alloy. W.Nr. 3.7105 (TiNi0.7Mo0.3).
| EN Symbol | Mo % | Ni % | Pd % | Best Used For |
|---|---|---|---|---|
| TiNi0.7Mo0.3 | 0.2–0.4 | 0.6–0.9 | — | Ti-0.3Mo-0.8Ni; crevice resistance + strength, economical |
| Ti99.5 | — | — | — | Workhorse commercially pure titanium (Grade 2) |
| TiPd0.2A | — | — | 0.12–0.25 | Ti-0.15Pd; best corrosion resistance (Grade 7) |
| TiPd0.2 | — | — | 0.12–0.25 | Ti-0.15Pd on soft base (Grade 11) |
| TiAl3V2.5 | — | — | — | Ti-3Al-2.5V; higher strength, tubing (Grade 9) |
+86 021 3355 6635
+86 133 7189 7780
zcalloy1001@gmail.com
Building E265, No. 2, Lane 158, Gangye Road, Xiaokunshan Town, Songjiang District, Shanghai
