Titanium Alloy Grade 2 Pipes

Titanium Grade 2 Pipes represent the most widely used commercially pure titanium product in industrial applications worldwide. With an excellent balance of corrosion resistance, formability, and moderate strength, Grade 2 titanium pipes deliver reliable performance across chemical processing, marine engineering, desalination, power generation, and countless other industries.

 

Titanium Grade 2 is a commercially pure (CP) titanium grade containing:

Titanium: ≥ 99% (balance)

Oxygen: 0.25% max

Iron: 0.30% max

Carbon: 0.08% max

Nitrogen: 0.03% max

Hydrogen: 0.015% max

 

Industry Specifications

Standard	Description
ASTM B861	Standard Specification for Titanium and Titanium Alloy Seamless Pipe
ASTM B862	Standard Specification for Titanium and Titanium Alloy Welded Pipe
ASTM B338	Standard Specification for Seamless and Welded Titanium Alloy Tubes for Condensers and Heat Exchangers
ASME SB861	ASME Boiler & Pressure Vessel Code version
UNS R50400	Unified Numbering System designation
DIN 3.7035	German standard designation
ISO 5832-2	Implants for surgery (where applicable)

Mechanical Properties (Annealed Condition)

Property	Value	Comparison
Tensile Strength (min)	345 MPa (50 ksi)	Similar to mild steel
Yield Strength (min)	275 MPa (40 ksi)	Adequate for most applications
Elongation (min)	20%	Excellent formability
Reduction of Area (min)	30%	Good ductility
Hardness (max)	80 HRB	Moderate hardness
Modulus of Elasticity	103 GPa (15 × 10⁶ psi)	56% of steel modulus

 

Physical Properties

Property	Value	Significance
Density	4.51 g/cm³ (0.163 lb/in³)	45% lighter than steel
Melting Point	1668°C (3034°F)	High-temperature capability
Thermal Conductivity	16.4 W/m·K	Good heat transfer
Coefficient of Thermal Expansion	8.6 µm/m·°C (20-100°C)	Matches glass and ceramics well
Electrical Resistivity	0.56 µΩ·m	Moderate conductivity
Magnetic Properties	Non-magnetic	MRI compatible, no interference
Specific Heat	0.523 J/g·°C	Moderate heat capacity

 

Standard Pipe Sizes (Seamless)

NPS (inches)	OD (mm)	Schedule 5S	Schedule 10S	Schedule 40S	Schedule 80S
1/8"	10.3	1.24 mm	1.73 mm	2.41 mm	-
1/4"	13.7	1.65 mm	2.24 mm	3.02 mm	-
3/8"	17.1	1.65 mm	2.31 mm	3.20 mm	-
1/2"	21.3	1.65 mm	2.77 mm	3.73 mm	4.78 mm
3/4"	26.7	1.65 mm	2.87 mm	3.91 mm	5.56 mm
1"	33.4	1.65 mm	2.77 mm	4.55 mm	6.35 mm
1-1/4"	42.2	1.65 mm	2.77 mm	4.85 mm	6.35 mm
1-1/2"	48.3	1.65 mm	2.77 mm	5.08 mm	7.14 mm
2"	60.3	1.65 mm	2.77 mm	5.54 mm	8.74 mm
2-1/2"	73.0	2.11 mm	3.05 mm	7.01 mm	9.53 mm
3"	88.9	2.11 mm	3.05 mm	7.62 mm	11.13 mm
4"	114.3	2.11 mm	3.05 mm	8.56 mm	13.49 mm
6"	168.3	2.77 mm	3.40 mm	10.97 mm	18.26 mm
8"	219.1	2.77 mm	3.76 mm	12.70 mm	20.62 mm
10"	273.0	3.40 mm	4.19 mm	15.09 mm	24.61 mm
12"	323.9	3.96 mm	4.57 mm	17.48 mm	28.58 mm

 

Dimensional Tolerances (ASTM B861)

Parameter	Tolerance
Outside Diameter (OD ≤ 38 mm)	±0.13 mm
Outside Diameter (OD 38-102 mm)	±0.25 mm
Outside Diameter (OD > 102 mm)	±0.38 mm
Wall Thickness	+20% / -12.5%
Length	+6 mm / -0 mm (for fixed lengths)
Straightness	≤ 1.5 mm per 1000 mm
Ovality	≤ 1.5% of nominal OD
Squareness of Cut	≤ 0.8 mm

 

Material	Density (g/cm³)	Tensile Strength (MPa)	Corrosion Resistance	Cost	Service Life (Marine)
Titanium Grade 2	4.51	345	Excellent	Moderate	50+ years
304 Stainless Steel	8.00	515	Good	Low	5-15 years
316 Stainless Steel	8.00	580	Good	Low	10-20 years
90/10 Copper-Nickel	8.94	300	Good	Moderate	10-20 years
Carbon Steel	7.85	400	Poor	Very Low	2-5 years
FRP/Fiberglass	1.8-2.0	100-200	Good	Moderate	10-15 years
Hastelloy C-276	8.89	790	Excellent	Very High	50+ years

 

Chemical Processing

Process piping for corrosive chemicals

Heat exchanger tubing

Reactor internals and coils

Storage tank connections

 

Desalination & Marine

Seawater cooling and fire mains

MSF and MED evaporator tubing

Offshore platform piping

Shipboard seawater systems

 

Power Generation

FGD scrubber piping

Geothermal brine handling

Nuclear secondary cycle cooling

Solar thermal fluid transfer

 

Our factory is a specialized titanium manufacturing facility equipped with advanced production machinery including vacuum arc remelting (VAR) furnaces for high-purity ingot melting, hydraulic forging presses and rotary piercing mills for tube hollow production, pilger mills and cold drawing benches for precision pipe forming, vacuum and atmosphere-controlled annealing furnaces for heat treatment, and complete finishing lines for cutting, straightening, and surface processing. Our in-house quality laboratory features optical emission spectrometers (OES) for chemical analysis, universal testing machines (UTM) for mechanical properties, ultrasonic flaw detectors and eddy current testers for non-destructive inspection, metallographic microscopes for microstructure evaluation, and hydrostatic testers for pressure integrity verification-ensuring every pipe meets strict international standards before shipment.

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