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ASME SB338 Grade 7 Titanium Tube Ti-0.2Pd Titanium Alloy Steel Heat Exchanger Tube

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ASME SB338 Grade 7 Titanium Tube Ti-0.2Pd Titanium Alloy Steel Heat Exchanger Tube

Brand Name:	YUHONG
Model Number:	ASME SB338 Gr. 7 Seamless Titanium Tube
MOQ:	500kgs
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Payment Terms:	L/C,T/T

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Product Name:

TitaniumTube

Standard:

ASTM B338, ASME SB338

Material:

Grade 7 , R52400, Ti-0.2Pd

OD:

1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", Etc.

Thickness:

BWG10-25

Length:

Single Random, Double Random & Cut Length

End:

Plain End, Beveled End

Highlight:

ASME SB338 Grade 7 Titanium Tube, Titanium Alloy Steel Heat Exchanger Tube

Product Description

ASTM B338 / ASME SB338 Grade 7 / Ti-0.2Pd / R52400 Titanium Tube Seamless Heat Exchanger Tube

Grade 7 titanium alloy tube (Ti with 0.12–0.25% Pd, balance Ti and residuals), conforming to ASME SB338— It comes either without a seam (seamless) or with a welded seam. Its purpose is to transfer heat between fluids while resisting corrosion, especially in acidic or salty conditions that would destroy ordinary titanium tubes. The specification for titanium tubes used in condensers and heat exchangers—and intended for heat exchanger duty (e.g., shell-and-tube units, condensers, or coolers).

Choose ASME SB338 Grade 7 (Ti-0.2Pd) for heat exchanger tubes when:

You need excellent resistance to chlorides (including high temperature).
The fluid contains dilute reducing acids (e.g., <5% HCl, <10% H₂SO₄) up to ~150°C.
You have tight crevices (e.g., tube-to-tubesheet, gaskets) in hot brine or acidic-chloride service.
You want to avoid exotic nickel alloys (C276, C22) for cost or availability reasons, but Grade 2 does not pass corrosion tests.

The funtion of adding Pd in titanium-- Palladium is a noble metal that cathodically modifies the titanium surface. In reducing acids where standard titanium's passive film fails, Pd promotes hydrogen evolution (a cathodic reaction) at a much lower overpotential, allowing titanium to spontaneously repassivate. This extends the corrosion resistance of titanium into regions normally reserved for more exotic alloys (like Ti-6Al-4V or Hastelloy).

Chemical Composition of ASME SB338 Grade 7 Titanium Tube / Ti-0.2Pd Titanium Alloy Steel Heat Exchanger Tube

Element	Chemical Composition %
Element	Grade 1	Grade 2	Grade 3	Grade 5	Grade 7	Grade 9	Grade 11	Grade 12	Grade 23
Nitrogen, max	0.03	0.03	0.05	0.05	0.03	0.03	0.03	0.03	0.03
Carbon, max	0.08	0.08	0.08	0.08	0.08	0.08	0.08	0.08	0.08
Hydrogen, max	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.015	0.0125
Iron, max	0.20	0.30	0.30	0.40	0.30	0.25	0.20	0.30	0.25
Oxygen, max	0.18	0.25	0.35	0.20	0.25	0.15	0.18	0.25	0.13
Aluminum	…	…	…	5.5-6.75	…	2.5-3.5	…	…	5.5-6.5
Vanadium	…	…	…	3.5-4.5	…	2.0-3.0	…	…	3.5-4.5
Tin	…	…	…	…	…	…	…	…	…
Ruthenium	…	…	…	…	…	…	…	…	…
Palladium	…	…	…	…	0.12-0.25	…	0.12-0.25	…	…
Molybdenum	…	…	…	…	…	…	…	0.2-0.4	…
Chromium	…	…	…	…	…	…	…	…	…
Nickel	…	…	…	…	…	…	…	0.6-0.9	…
Niobium	…	…	…	…	…	…	…	…	…
Ziconium	…	…	…	…	…	…	…	…	…
Silicon	…	…	…	…	…	…	…	…	…
Residuals, max each	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Residuals, max total	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Titanium	balance	balance	balance	balance	balance	balance	balance	balance	balance

Mechanical Property of ASME SB338 Grade 7 Titanium Tube / Ti-0.2Pd Titanium Alloy Steel Heat Exchanger Tube

Grade	Tensile Strength, min		Yield Strength (0.2% Offset)				Elongation 2 in. or 50 mm
			min		max		Elongation 2 in. or 50 mm
	Ksi	(Mpa)	Ksi	(Mpa)	Ksi	(Mpa)	gage length min %
Grade 1	35	(240)	25	(170)	45	(310)	24
Grade 2	50	(345)	40	(275)	65	(450)	20
Grade 3	65	(450)	55	(380)	80	(550)	18
Grade 5	130	(895)	120	(828)	…	…	10
Grade 7	50	(345)	40	(275)	65	(450)	20
Grade 9	90	(620)	70	(483)	45	…	15
Grade 11	35	(240)	25	(170)	…	(310)	24
Grade 12	70	(483)	50	(345)	…	…	18
Grade 23	120	(828)	110	(759)	…	…	10

Application

1. Chemical Process Heat Exchangers

2. Desalination & Brine Heaters

3. Offshore Oil & Gas

4. Pulp & Paper Industry

5. Pharmaceutical & Fine Chemical6. Hydrometallurgy & Mining

7. Replacement / Upgrade Applications

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Studded Tube

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Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

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Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube