Stainless Steel 904L Pipes

What is 904L Stainless Steel?

Classed under UNS N08904, 904L stainless steel is a non-stabilized, completely austenitic stainless steel alloy with high concentrations of chromium, nickel, molybdenum, and copper. Particularly helpful in aggressive chemical settings, copper distinguishes it by improving its resistance to strong reducing acids—especially sulfuric, phosphoric, and acetic acids.

904L resists pitting, crevice corrosion, and stress corrosion cracking more than conventional grades such as 316L. While preserving great formability and weldability, the raised nickel (up to 28%) and molybdenum (up to 5%) levels increase its resistance in conditions rich in chloride, such as seawater. This alloy is designed for uses where structural integrity and corrosion resistance are both very vital.

Stainless Steel 904L Pipes are high-alloy, low-carbon pipes known for superior resistance to corrosion, especially in acidic and chloride-rich environments. They are ideal for chemical processing, marine, and oil & gas industries demanding durability.

Stainless Steel 904L Tubes

Stainless Steel 904L Tubes are high-alloy austenitic stainless steel tubes known for their excellent corrosion resistance, especially in harsh environments. They offer superior strength, durability, and weldability, making them ideal for industrial use.

Specification of Stainless Steel 904L Pipes

Specification

Specifications

ASTM B677 B673 / ASME SB677 SB673

Dimensions

ASTM, ASME and API

Seamless Pipe Size

1/2″ NB – 16″NB

ERW Pipe Size

1/2″ NB – 24″ NB

EFW Pipe Size :

6″ NB – 100″ NB

Outside Diameter :

6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available

Length

Single Random, Double Random & Required Length

Thickness

0.3mm – 50 mm

Schedule

SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH120, SCH140, SCH160, XXS

Type

Seamless, Welded, ERW, EFW

Form

Round Pipes, Square Pipes, Rectangular Pipe

End

Plain End, Beveled End, Treaded

Stainless Steel 904L Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	KS	AFNOR	EN
SS 904L	1.4539	N08904	SUS 904L	904S13	STS 317J5L	Z6CNDT17‐123	X1NiCrMoCu25-20-5

904L Stainless Steel Chemical Composition

904L's unusual chemical composition helps to explain its amazing mechanical stability and corrosion resistance. Together, its alloying components provide endurance in both oxidizing and reducing conditions. Usually, the composition calls for:

Element	SS 904L
C	0.020 max
Mn	2.00 max
Si	1.00 max
P	0.040 max
S	0.030 max
Cr	19.00 – 23.00
Mo	4.00 – 5.00 max
Ni	23.00 – 28.00
Cu	1.00 – 2.00

Under high temperatures or extreme pressure, this balanced high-alloy composition allows 904L to offer outstanding resistance to uniform corrosion, pitting, and intergranular corrosion.

Mechanical Properties of 904L Pipe

Apart from its corrosion resistance, 904L stainless steel shows good mechanical performance. Applications subjected to mechanical stress, heavy loads, or changing temperatures will find it appropriate given its longevity and toughness.

Element	SS 904L
Density	7.95 g/cm3
Melting Point	1350 °C (2460 °F)
Tensile Strength	Psi – 71000 , MPa – 490
Yield Strength (0.2%Offset)	Psi – 32000 , MPa – 220
Elongation	35 %

Heat exchangers, pressure vessels, and structural piping systems find the pipe appropriate since these mechanical characteristics help it to resist dynamic stress and preserve integrity in high-pressure settings.

Stainless Steel 904L Price Factors

Several market and technical elements can affect the price of 904L stainless steel pipe:

Composing raw materials, Greater molybdenum and nickel concentration raises the base alloy cost.
Custom lengths, thicker walls, and larger diameters all raise material and manufacturing costs.
Manufacturing & Testing Standards: Third-party testing certificates and specific fabrication needs contribute to the ultimate cost.
Major influences are global supply and demand, metal index swings, and shipping considerations.

Although 904L pipes cost more than conventional stainless steels like 304 or 316L, over time their decreased maintenance needs and longer service life make them more affordable in harsh applications.

Applications of 904L Stainless Steel Pipe

Trusted in many different sectors for their resistance to corrosion, mechanical endurance, and performance in demanding environments, 904L stainless steel pipes Often used are:

Petrochemical Plants and Chemical Ones
Units of Processing Pulp and Paper
Engineering for Offshore and Marine Projects
Exchangers for heat and condenser tubes
Food Processing and Pharmaceutical Sectors
Refining tools and pipelines for oil and gas

Its broad spectrum of industrial applications emphasizes its adaptability, economy, and dependability in settings where exposure to acids, salts, and high temperatures causes concerns.

Where Can I Buy 904L Pipe?

Seeking a trustworthy supplier to buy premium 904L stainless steel pipes? Your reliable mate is Solitaire Overseas. Being internationally known exporter and supplier, we provide:

Competitive Pricing grounded in World Metal Indexes
Custom Sizes, Cut-to- Length Services, Fabrication Support
Export-Grade, Climate-Proof Packaging
Global Transportation with Complete Documentation
Origin certificates, mill tests certificates, quality reports

Our customer-centric strategy, quality control, and logistical competence help us to be the preferred provider for 904L stainless steel pipe requirements in several sectors.

FAQ

What is the 904L stainless steel price per kg?

Pricing varies depending on quantity, pipe size, and market conditions. However, 904L typically commands a premium over 316L due to its higher nickel and molybdenum content.

Is 904L better than 316L?

Yes. 904L outperforms 316L in terms of resistance to sulfuric acid, chloride-induced corrosion, and stress corrosion cracking, making it a more robust choice for severe service environments.

What are the common uses of 904L pipe?

904L pipes are widely used in chemical processing plants, marine applications, offshore oil rigs, heat exchangers, and high-purity equipment in pharmaceutical manufacturing.

Can 904L stainless steel be welded easily?

Absolutely. 904L has good weldability using conventional welding techniques such as TIG, MIG, and SMAW. No pre-heating is required, although post-weld cleaning is recommended to maximize corrosion resistance.