1.4539 AISI 904L Stainless Steel Pipe

1.Standard: ASTM A312 / ASME SA312、ASTM A213/ASME SA213、ASTM B677 / ASME SB677
2.Size: 1/2”- 48”
3.Thickness: 0.5mm-30mm
4.Equivalent: UNS N08904, WNR.1.4539, AISI 904L

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Product Introduction

EN 1.4539 AISI 904L Stainless Steel Pipe, is a high-alloy austenitic stainless steel known for its excellent corrosion resistance. SS 1.4539 offers outstanding resistance to a wide variety of corrosive environments, including sulfuric acid, phosphoric acid, and chlorides. This material is designed to withstand harsh environments and is widely used in industries where standard austenitic stainless steels fail due to chloride-induced stress corrosion cracking or general corrosion. Used in offshore oil rigs and refineries, chemical processing, particularly in heat exchangers and condenser tubes.

AISI 904l Stainless Steel Pipe Applications:

Seawater cooling equipment
Chemical processing for sulphuric, phosphoric and acetic acids
Gas washing
Condenser tubes
Control and instrumentation
Heat exchangers

ASTM A312 TP904L Stainless Steel Pipe Specifications

Specifications	ASTM A 312 / ASME SA 312 ASTM B677 / ASME SB 677
Dimensions	ASTM, ASME and API
SS 904L Pipes	1/2″ NB – 16″ NB
ERW 904L Pipes	1/2″ NB – 24″ NB
EFW 904L Pipes	6″ NB – 100″ NB
Size	1/8″NB TO 30″NB IN
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type	Seamless / ERW / Welded / Fabricated / LSAW Pipes
Length	Single Random, Double Random & Cut Length.
End	Plain End, Beveled End, Treaded

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En 1.4539 Stainless Steel Mechanical Properties

Temper	Annealed 1.4539 AISI 904L
Tensile Rm	71	ksi (min)
Tensile Rm	490	MPa (min)
R.p. 0.2% Yield	32	ksi (min)
R.p. 0.2% Yield	220	MPa (min)
Elongation (2" or 4D gl)	35	% (min)

DIN 1.4539 904l Physical Properties (Room Temperature)

Specific Heat (0-100°C)	450	J.kg-1.°K-1
Thermal Conductivity	11.5	W.m -1.°K-1
Thermal Expansion	15.8	mm/m/°C
Modulus Elasticity	190	GPa
Electrical Resistivity	9.52	μohm/cm
Density	7.95	g/cm3