Home ProductsTitanium Pipe

ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers

Spezilla is really a professional supplier, they always give us technical advice and provide good quality tubes with very competitive price!

—— Thomas Hoover - United States

Good quality, fast delivery, Spezilla has been supplying heat exchanger tubes for our projects since 2008, we really appreciate your support!

—— Massimiliano Rossi - Italy

Spezilla supports our group very well, and now we are approved supplier of goverment, they are reliable and flexible! Spezilla always answers!

—— Jaime Arias - Argentina

Very competitive price and the tubes are well polished, we are very satisfied with Spezilla from our cooperation since year 2010.

—— Nathalie Gulli - Mexico

I'm Online Chat Now

ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers

China ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers supplier
ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers supplier ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers supplier ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers supplier ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers supplier

Large Image :  ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers

Product Details:

Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008
Model Number: GR.7

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: WOODEN BOX
Delivery Time: 15 DAYS
Payment Terms: L/C, T/T
Supply Ability: 100 TONS PER MONTH
Contact Now
Detailed Product Description
Application: HEAT EXCHANGER Alloy No.: Ti GRADE 7
OD: 6.00MM - 114.30MM Tube Standard: ASME SB338
Inspection Certificate: EN10204 3.1 Manufacturing: SEAMLESS WELDED

ASME SB338 Grade 7 Seamless Round Tube Titanium Pipe Welding for Condensers / Heat Exchangers

 

Description

 

Titanium grade 7 is a corrosion resistant alpha titanium alloy with similar mechanical properties to the commercially pure grades. It has a small palladium addition to improve corrosion resistance, particularly in mineral acids and strong brines. It is used mildly reducing or fluctuating conditions. At room temperature it is an alpha alloy. It transforms to beta phase at 913°C, and the alpha phase returns on cooling 890°C.

Titanium is reactive, with a very high affinity for oxygen, which forms a skin of very stable and highly adherent oxide. The skin gives excellent corrosion resistance, despite the reactivity of the metal. The oxide layer forms spontaneously and on exposure to the atmosphere. However, when new parent metal is exposed to anhydrous conditions or in the absence of air, rapid corrosion may occur. Care should also be taken if titanium is to operate in contact with hydrogen, as hydrogen embrittlement from hydride formation can increase strength, with loss of ductility.

 

Grade 7 is mechanically and physically equivalent to Grade 2, except with the addition of the interstitial element palladium, making it an alloy. Grade 7 possesses excellent weldability and fabricality, and is the most corrosion resistance of all titanium alloys. In fact, it is most resistant to corrosion in reducing acids.

Grade 7 is used in chemical processes and production equipment components.

 

Titanium Grade 7 has physical and mechanical properties equivalent to CP3 titanium or Grade 2. It has excellent welding and fabrication properties and is extremely resistant to corrosion especially from reducing acids.

 

Excellent Weldability Titanium


Excellent Fabricability


Physical Properties Equivalent to CP Grade 2


Mechanical Properties Equivalent to CP Grade 2


Most Resistant to Corrosion in Reducing Acids

 

Chemical Analysis of Titanium Grade 7:

 

C 0.08 Max
N 0.03 Max
O 0.25Max
H 0.015Max
Pd 0.12 - 0.25
Ti Bal.
Fe 0.30 Max

 

Mechnical Property:

 

  0.2% Proof Stress Tensile Strength Elongation
MPa MPa %
Annealed 275-475 345 20

 

Titanium Grade 7 Specifications:

 

Extrusion ASME SB-363
Forgings ASME SB-381
Pipe

ASME SB-337


ASME SB-338

Round Bar/Wire ASME SB-348
Sheet/Plate ASME SB-265
Tubes

ASME SB-337


ASME SB-338

 

Comparative Corrosion Rates:

 

Corrosive Medium
Concentration
%
Temp
°C
Corrosion Rate
mm/year
Grade 7 Grade 2
Aluminium Chloride
10 100 <0.025 <0.025
  25 100 0.025 50
Chlorine (wet)
Room <0.025 <0.025
Citric Acid
50 Boiling <0.025 0.4
Hydrochloric Acid (HCI)
5 Boiling 0.18 >10
Hydrochloric Acid (N2 Saturated)
3 190 0.025 >28
  5 190 0.1 >28
  10 190 8.8 >28
  15 190 40
Hydrochloric Acid (O2 Saturated)
3 190 0.13 >28
  5 190 0.13 >28
  10 190 9.2 >28
Sodium Chloride
Brine 93 <0.025
  10 190 <0.025
+ Acidified pH1.2
23(a) Boiling nil
Sulphuric Acid
5 Boiling 0.5 48
Sulphuric Acid (N2 Saturated)
1 100 7
  1 190 0.13
  5 100 26.5
  5 190 0.13
  10 190 1.5
Formic Acid
50 Boiling 0.075 3.6
Oxalic Acid
1 Boiling 1.13 45
Phosphoric Acid
50 70 1.8 10
  10 Boiling 3.2 11

 

 

ASME SB338 Grade 7 Seamless Round Titanium Pipe Welding for Condensers / Heat Exchangers

 

 

Contact Details
Spezilla Tube Co., Ltd.

Contact Person: Vivian Wang

Send your inquiry directly to us (0 / 3000)