GR1 Titanium Pipe – Aerospace Grade Data Sheet

GR1 titanium pipe is commercially pure (CP) Grade 1 titanium. Titanium is 30% stronger than steel but nearly 50% lighter. Although aluminum is lighter, GR1 titanium is stronger and has excellent strength retention. Due to titanium's weight, strength, and high corrosion resistance, it is very popular in aerospace, medical, shipping, and military industries.

Key differences from commercial standards:

Oxygen: 0.15% max (typical commercial GR1 is 0.18% max) – this lower oxygen gives even higher ductility

Iron: 0.02% max (typical commercial GR1 is 0.20% max) – much tighter control for aerospace applications

GR1 titanium chemical composition for aerospace grade has tighter controls than commercial ASTM B861 grade 1.

Titanium grade 1 density is 4.51 g/cm³. Grade 1 titanium hardness is approximately 70 HRB.

ASTM B861 grade 1 titanium tube (commercial seamless) and ASTM B862 GR1 (welded) are common commercial equivalents. For aerospace applications, AMS specifications apply.

GR1 titanium is available in:

Due to its weight, strength, and high corrosion resistance, GR1 titanium pipe is very popular in:

GR1 titanium for chemical processing also benefits from the material's excellent corrosion resistance.

GR1 titanium machinability – the lower iron content (0.02% max) may affect machining characteristics. Use sharp carbide tools and abundant coolant.

GR1 titanium forming/bending is excellent due to low oxygen content (0.15% max). GR1 titanium for deep drawing is ideal.

Q1: What is the difference between aerospace grade GR1 and commercial GR1 titanium pipe?
A: Aerospace grade GR1 titanium pipe has tighter chemical controls. Oxygen is 0.15% max (commercial: 0.18% max). Iron is 0.02% max (commercial: 0.20% max). This gives aerospace grade even higher ductility and purity. Aerospace grade also complies with AMS and MIL specifications in addition to ASTM.

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. Aerospace equivalents include Werkstoff WS3.7024 (aerospace) and WS3.7025 (commercial), DTD 5013, AIR 9182 T35, LN 9297, IMI 115, and AICMA Ti-P01.

Q3: What is the oxygen content of aerospace grade GR1 titanium tube?
A: The oxygen content for aerospace grade GR1 titanium tube is 0.15% maximum. This is lower than commercial GR1 (0.18% max), resulting in even higher ductility for GR1 titanium for deep drawing and GR1 titanium forming/bending operations.

Q4: What ASTM standard covers GR1 titanium heat exchanger tubes?
A: ASTM B338 covers GR1 titanium heat exchanger tubes. ASTM B337 (pipe) has been withdrawn – for pipe applications, use ASTM B338 or ASTM B861.

Q5: Is GR1 titanium pipe suitable for surgical implants?
A: Yes, medical grade 1 titanium conforms to ASTM F67 grade 1 for surgical implants. The same UNS R50250 designation applies. GR1 titanium offers excellent biocompatibility and corrosion resistance.

Q6: How strong is GR1 titanium pipe compared to steel?
A: GR1 titanium is 30% stronger than steel but nearly 50% lighter. Titanium grade 1 density is 4.51 g/cm³ vs steel at 7.85 g/cm³. Although aluminum is lighter, GR1 titanium is stronger and has excellent strength retention at elevated temperatures.

Q7: What are the mechanical properties of GR1 titanium pipe?
A: Minimum tensile strength is 241 MPa (35 ksi). GR1 titanium yield strength ranges from 172-310 MPa (25-45 ksi). Elongation is 24% minimum. These properties are specified per MIL-T-9046J, AMS-T-9046, and AMS 4940.