Ninthore Overseas is one of the Leading Manufacturer And Exporter Of High Quality Stainless Steel 904L Tubes ,which is commonly welded for applications under 1450 Degree F. Stainless Steel 904L Seamless Tubes is a nickel – base alloy used both for its high strength and outstanding aqueous corrosion resistance. The strength of Stainless Steel 904L Welded Tubes is primarily a solid solution effect from molybdenum and columbium. Stainless Steel 904L Round Tubes has excellent weldability and is frequently used to weld, where matching filler metals are also used to join dissimilar metals. Stainless Steel 904L Square Tubes is an austenitic heat resistant alloy designed for high temperature structural applications.

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Stainless Steel 904L Tubes

Stainless Steel 904L Tubes

The strength of Stainless Steel 904L Rectangular Tubes is achieved by controlled levels of carbon, Aluminium, and titanium along with a 2100 Degree F minimum annealing to achieve a grain size or coarser. Stainless Steel 904L Welded Tubes offers a closer match of thermal expansion coefficient, and somewhat higher strength. To avoid possible stress relaxation grain boundary cracking of Stainless Steel 904L Instrumentation Tubes in applications above 1000 Degree F the welded fabrication may be heated 1650 Degree F for about one hour per inch of thickness or 30 minutes minimum then air cooled.

Stainless Steel 904L High Pressure Tubes, also known as solid solution strengthened grade, has good strength and excellent oxidation resistance to 2000 Degree F. Stainless Steel 904L Heat Exchanger Tubes are available in different shapes, sizes and designs to our esteemed clients.

SS 904L Welded Tubes Specifications
Specifications : ASTM B/ASME SB674 / SB677
Dimensions : ASTM, ASME and API
SS 904L Tubes Size
: 1/8″NB TO 30″NB IN
Thickness : 0.35mm to 6.35mm OD in thickness ranging from 0.1mm to 1.2mm.
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated / LSAW Tubes
Form : Round, Square, Rectangular, Hydraulic Etc
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End, Treaded
904L Stainless Steel Tubes Available Sizes
NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
1 1/4″
1 1/2″
2 1/2″
904L Stainless Steel Tube Chemical Composition
Grade C Mn Si P S Cr MO Ni Cu
904L min. 19.0 4.0-5.0 23.0 1.0
max. 0.20 2.0 1.0 0.045 0.035 23.0 28.0 2.0
Stainless Steel 904L Tubes Mechanical Properties
Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
446 490 220 35 70-90 typical
Stainless Steel 904L Tube Physical Properties
Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
904L 7500 200 15.00 13 500 850
Equivalent Grades for 904L Stainless Steel Tubes
SS 904L 1.4539 N08904 SUS 904L 904S13 STS 317J5L Z2 NCDU 25-20 X1NiCrMoCu25-20-5
SS 904L Seamless / Welded Tubes Application Industries
  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry
SS 904L Steel Tube Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc

Material Testing
We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)



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