products details

Home > Products >

Boiler Tube

ASTM A335 P9 Alloy Steel Seamless Pipe 1.7386 CrMo Alloy Boiler Tube for High Temperature

All Category

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

Carbon Steel Heat Exchanger Tubes

Nickel Alloy Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Tubesheet

Ms. Vivi Zhao

vivi@steelseamlesspipe.com

+8613023766106

Contact Now

ASTM A335 P9 Alloy Steel Seamless Pipe 1.7386 CrMo Alloy Boiler Tube for High Temperature

Brand Name:	YUHONG
Model Number:	ASTM A335 P9 Alloy Steel Seamless Pipe
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:

Boiler Tube

Standard:

ASTM A335 / ASME SA335

Material:

P9 / 1.7386 / X11CrMo9-1

1/2" ~24"

Thickness:

Sch5S To Sch.XXS

Length:

Single Random, Double Random & Cut Length

Plain End, Beveled End

Highlight:

ASTM A335 P9 Alloy Steel Seamless Pipe, CrMo Alloy Boiler Tube

Product Description

ASME SA335 / ASTM A335 Grade P9 / 1.7386 / X11CrMo9-1 Alloy Steel Heat Exchanger Tube

YUHONG is professional supplier of alloy steel pipes and tubes, covering T5, T9,T11,T22,T91,T92 and equivalent "P" series grades, used in boiler, heat exchanger, power plant ... ASTM A335 P9 (1.7386) is an excellent choice for a high-temperature boiler tube when you need oxidation resistance beyond what 2.25Cr (P22) can provide, but you do not require the highest creep strength of P91. However, be prepared for strict welding procedures (preheat + PWHT) and know that its creep strength above 590°C (1100°F) is limited. For supercritical or ultra-supercritical boilers, upgrade to P91.

Equivalent Grades of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube

Standard	UNS	Werkstoff / DIN	EN	JIS	BS
ASTM A335/ ASME SA335 P9	S50400	1.7386	X11CrMo9-1	STPA 26	3604 P1 629-470

Chemical Compositions % of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube

C	Mn	P	S	Si	Cr	Mo
≤0.15%	0.3%~0.6%	≤0.025%	≤0.025%	0.25%-1.00%	8.0%~10.0%	0.90%~1.10%

Mechanical Properties of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube

Tensile Strength ksi/MPa	Yield Strength (0.2% offset) ksi/MPa	Hardness HBW	Heat Treatment Requirements ℉/℃
≥60/415	≥30/205	≤250	1250/675

Quick Comparison Table: Advantage vs. Other Grades

Property	vs. Carbon Steel (e.g., A106)	vs. P11/P22 (1.25-2.25Cr)	vs. P91 (9Cr-1Mo-V)
Oxidation limit	Much higher	Higher	Similar
Creep strength	Much higher	Moderately higher	Lower (but P91 is superior)
Cost	Higher	Slightly higher	Lower (~30-50% less than P91)
Weldability	Worse (needs PWHT)	Similar	Better (more forgiving than P91)

Application

Power generation boilers – Superheater and reheater tubes, especially in coal- or oil-fired units where high chromium content resists oxidation from flue gases.
Header pipes and steam lines – Moderate-temperature main steam piping (typically up to ~590°C / 1100°F).
Petrochemical furnaces – Hydrogen reformer tubes and furnace coils that require resistance to hydrogen attack and high-temperature sulfidation.
Heat exchangers – Shell-and-tube exchangers exposed to hot corrosive gas streams.
Refinery high-temperature piping – Transfer lines and heater tubes in crude oil heaters and coker units.

Tags:

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

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

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

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