What is titanium Grade 1?
May 14, 2026
Purity and Basic Properties
GR1 titanium pipe has a purity of approximately 99.5% titanium. GR1 titanium tube offers a unique combination of excellent ductility, superior corrosion resistance, and outstanding formability.
GR1 titanium is the softest and most ductile grade of titanium. ASTM B338 grade 1 pipe can be easily fabricated into complex shapes without compromising performance, making it ideal for custom components.
Titanium grade 1 density is only 4.51 g/cm³, providing excellent durability while significantly reducing overall system weight.
Corrosion Resistance of GR1 Titanium Tube
GR1 titanium tube naturally forms a stable oxide layer that protects it from aggressive environments:
| Environment | GR1 Titanium Pipe Performance |
|---|---|
| Seawater | Excellent – forms protective oxide layer |
| Chlorides | Excellent |
| Acids | Good resistance |
| Industrial chemicals | Good resistance |
GR1 titanium for chemical processing is a reliable material for long-term use with minimal maintenance. GR1 titanium heat exchanger tubes benefit from this corrosion resistance.
Formability and Weldability
GR1 titanium pipe offers outstanding formability and weldability:
| Property | Description |
|---|---|
| Formability | Easy to fabricate into complex shapes |
| Ductility | Highest among titanium grades |
| Weldability | Excellent – how to weld GR1 titanium is well established |
| Deep drawing | GR1 titanium for deep drawing is ideal |
Mechanical Properties
GR1 titanium pipe mechanical properties:
| Property | Value |
|---|---|
| Tensile strength | ≥ 240 MPa |
| GR1 titanium yield strength | ≥ 170 MPa |
| Elongation | ≥ 24% |
| Titanium grade 1 density | 4.51 g/cm³ |
Non-Magnetic and Biocompatible
GR1 titanium tube offers two additional critical properties:
| Property | Benefit |
|---|---|
| Non-magnetic | Ensures reliability in sensitive electronic environments |
| Biocompatible | Safe for medical applications – medical grade 1 titanium (ASTM F67 grade 1) |
GR1 titanium pipe is reliable for medical implants and devices, offering excellent biocompatibility and long-term safety.
Applications of GR1 Titanium Tube
| Industry | Application |
|---|---|
| Aerospace | Designed for extreme conditions – temperature fluctuations and exposure to harsh elements |
| Chemical processing | GR1 titanium for chemical processing – heat exchangers, storage tanks, piping systems |
| Marine and offshore | Seawater applications, desalination plants, offshore structures – chloride corrosion resistance |
| Medical | Implants and medical devices – ASTM F67 grade 1 |
| Industrial | Long service life when handling corrosive media |
GR1 vs GR5 Titanium
GR1 vs GR5 titanium comparison:
| Criterion | GR1 Titanium Pipe | GR5 (Ti-6Al-4V) |
|---|---|---|
| Corrosion resistance | Excellent | Good |
| Formability | Best | Poor |
| Cost-effectiveness | More cost-effective | Higher cost |
| Strength | Lower | Maximum strength |
| Best for | Corrosion resistance, formability | Maximum strength applications |
FAQ
Q1: What is the purity of GR1 titanium pipe?
A: GR1 titanium pipe has purity of approximately 99.5% titanium. This high purity gives GR1 titanium its excellent corrosion resistance, ductility, and formability. GR1 titanium tube is the softest and most ductile grade of titanium.
Q2: What is the UNS number for ASTM B861 grade 1 titanium tube?
A: The UNS number for ASTM B861 grade 1 titanium tube is R50250. ASTM B338 grade 1 titanium pipe also uses UNS R50250. Medical grade 1 titanium (ASTM F67 grade 1) uses the same UNS number with additional biocompatibility requirements.
Q3: What is the density of titanium grade 1 pipe?
A: Titanium grade 1 density is 4.51 g/cm³. This low density gives GR1 titanium pipe excellent durability while significantly reducing overall system weight compared to stainless steel or copper alloys.
Q4: Is GR1 titanium pipe corrosion resistant to seawater?
A: Yes, GR1 titanium pipe is highly corrosion resistant to seawater. GR1 titanium naturally forms a stable oxide layer that protects it from aggressive environments including seawater, chlorides, acids, and industrial chemicals. GR1 titanium tube is used in desalination plants and offshore structures.
Q5: What is the elongation percentage of GR1 titanium tube?
A: GR1 titanium tube has minimum elongation of 24%. This high ductility makes GR1 titanium the softest and most ductile grade of titanium. GR1 titanium for deep drawing and GR1 titanium forming/bending benefit from this high elongation.
Q6: What is the yield strength of ASTM B338 grade 1 titanium pipe?
A: The minimum GR1 titanium yield strength for ASTM B338 grade 1 titanium pipe is 170 MPa. Tensile strength is 240 MPa minimum. While not the strongest titanium grade, GR1 titanium excels where corrosion resistance, flexibility, and reliability are priorities.
Q7: Is GR1 titanium tube non-magnetic?
A: Yes, GR1 titanium tube is non-magnetic. This non-magnetic property ensures reliability in sensitive electronic environments. GR1 titanium pipe is safe for applications where magnetic interference must be avoided.
Q8: Is GR1 titanium biocompatible for medical applications?
A: Yes, medical grade 1 titanium conforming to ASTM F67 grade 1 is biocompatible and safe for medical implants and devices. GR1 titanium offers excellent biocompatibility and long-term safety for surgical implants and medical instruments.
Q9: What is the difference between GR1 and GR5 titanium pipe?
A: GR1 vs GR5 titanium comparison: GR1 titanium pipe offers excellent corrosion resistance, best formability, and is more cost-effective. GR5 (Ti-6Al-4V) offers maximum strength. Choose GR1 titanium when corrosion resistance, formability, and cost-effectiveness are priorities. Choose GR5 when maximum strength is required.
Inspection
| Test | Purpose |
|---|---|
| Chemical analysis | Verify 99.5% purity and GR1 titanium chemical composition |
| Tensile testing | Confirm tensile strength (≥240 MPa), GR1 titanium yield strength (≥170 MPa), elongation (≥24%) |
| Hardness testing | Verify grade 1 titanium hardness |
| Corrosion testing | Verify resistance to seawater, chlorides, acids |
| Dimensional inspection | Check diameter, wall thickness, length |
| Surface inspection | Check for defects |
| Ultrasonic testing | Detect internal flaws in GR1 titanium pipe |
| Eddy current testing | Surface defect detection on GR1 titanium tube |
Packaging
| Packaging Step | Description |
|---|---|
| 1. End protection | Plastic end caps on both ends of each GR1 titanium tube |
| 2. Inner wrapping | Plastic paper / VCI paper wrapped around GR1 titanium pipe |
| 3. Bundling | Steel straps securing bundles of GR1 titanium tube |
| 4. Wooden case | Suitable for long-distance transport by air or sea shipping |
| 5. Labeling | Grade (GR1), standard (ASTM B338/B861), dimensions, heat number |
Factory Equipment
| Equipment | Function |
|---|---|
| VAR furnace | Vacuum Arc Remelting for high-purity titanium ingot (99.5%) |
| Extrusion press | Forms GR1 titanium pipe hollows from billet |
| Cold pilger mill | Reduces diameter and wall thickness of GR1 titanium tube |
| Annealing furnace | Stress relief of GR1 titanium |
| Pickling line | Removes oxide scale |
| Straightening machine | Corrects bending |
| Cutting machine | Precision length cutting |
| Ultrasonic tester | Non-destructive inspection |
| Eddy current tester | Surface defect detection |
| Hydrostatic tester | Pressure testing |
| Tensile testing machine | Mechanical property verification |
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