Ninthore Overseas Is One Of The Leading Manufacturer And Exporter Of High Quality Stainless Steel 304H Nipple, which has carbon content and is a preferred choice for high temperature applications. Stainless Steel 304H Hexagon Reducing Nipple has good resistance to oxidation at temperatures of up to 1040 Degree C (1904 Degree F) in intermittent service and 1150 Degree C (2102 Degree F) in continuous service. Stainless Steel 304H Hexagon Nipple is widely used in environments where Sulphur dioxide gas is present at high temperatures. However SS 304H One End Threaded Nipple is recommended that this steel should not be continuously used at 425 Degree C – 860 Degree C (797 Degree F – 1580 Degree F) range due to carbide precipitation.

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Stainless Steel 304H Nipple

Stainless Steel 304H Nipple

Stainless Steel 304H Both End Threaded Nipple does not perform in reducing, nitriding or carburizing atmospheres, but it does outperform most heat resistant stainless steels in these conditions. Stainless Steel 304H Concentric Swaged Nipple is prone to inter – granular corrosion after long term exposure at high temperatures. However, due to its high chromium content, Stainless Steel 304H Eccentric Swaged Nipple is more corrosion resistant than most heat resistant alloys.

304H Stainless Steel Nipple is quite ductile and forms in a manner very similar to 316, where good characteristics suited to all standard methods and generally recommended for fusion welding. When heated between 1202 Degree F – 1742 Degree F (650 Degree C – 950 Degree C), Grade 304H Nipple is subject to sigma phase precipitation.

Stainless Steel 304H Nipple
Specifications : ASTM A182 & ASME SA182
Size : 1/4″ to 4″
Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
SS 304H Nipple Chemical Composition
Grade C Mn Si P S Cr Mo Ni N
304H min. 0.04 18.0 8.0
max. 0.010 2.0 0.75 0.045 0.030 20.0 10.5
Stainless Steel 304H Nipple 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
304H 515 205 40 92 201
Equivalent Grades for 304H Stainless Steel Nipple
Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304H S30409 1.4301
Stainless Steel 304H Nipple 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 304H Nipple 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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