Stainless Steel 904L Tube Fittings

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Stainless Steel 904L Tube Fittings Manufacturers & Supplier in India.

Monel 400 Tube Fittings

Kalpataru Piping Solution is a leading manufacturer, exporter, and supplier of Stainless Steel 904L Instrumentation Tube Fittings, precision-engineered to deliver exceptional corrosion resistance in the most aggressive process environments. SS 904L is a low-carbon, high-alloy austenitic stainless steel containing elevated levels of nickel, chromium, molybdenum, and copper — a composition that provides outstanding resistance to sulfuric acid, phosphoric acid, and chloride-induced pitting corrosion, making it the material of choice for critical instrumentation and fluid-control applications. Meanwhile, Stainless Steel 904L Female Elbow Fittings can be recycled always with no loss of properties.

ASME SA182 Stainless Steel 904L Male Run Tee, Grade 904L SS Double Ferrule Tube Fittings Exporter in India.

SS 904L Tube Fittings are manufactured in compliance with ANSI/ASME and DIN standards, and are available in both single-ferrule and double-ferrule configurations to suit diverse compression fitting requirements. The 904L alloy’s passive oxide surface layer provides inherent atmospheric corrosion resistance without additional coating, making it suitable for direct deployment across marine, offshore oil and gas, pulp and paper, and power generation environments. Our production capacity covers the full range of fitting types — from male connectors and female elbows to union tees, bulkhead fittings, and ferrule nuts — all available in short lead times.

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Stainless Steel 904L Instrumentation Fittings Specification

The following specifications apply to our standard SS 904L Instrumentation Tube Fittings range. Custom sizes and thread configurations are available on request.

Specifications

ASTM A182, A276, A479 / ASME SA182, SA276, SA479

Size

1/16” 1/2” & 1.5MM to 38.1MM

Thread

NPT, PT, BST, NPS, PS, BSP

Pressure

6000PSI for Stainless Steel 300/1000/3000PSI for Brass

Types

Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories

 

Stainless Steel 904L Tube Fittings Equivalent Standard Grade

SS 904L Instrumentation Tube Fittings conform to the following international material equivalents, enabling direct specification across global procurement standards.

STANDARD

WERKSTOFF NR.

UNS

JIS

BS

KS

AFNOR

EN

SS 904L

1.4539

N08904

SUS 904L

904S13

STS 317J5L

Z2 NCDU 25-20

X1NiCrMoCu25-20-5

Stainless Steel 904L Tube Fittings Types

Stainless Steel 904L Compression Fittings Chemical Composition

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

Cu

SS 904L

0.020 max

2.00 max

1.00 max

0.040 max

0.030 max

19.00 – 23.00

4.00 – 5.00 max

23.00 – 28.00

1.00 – 2.00

The elevated nickel (23–28%) and molybdenum (4–5%) content in SS 904L provides significantly higher resistance to reducing acids and chloride pitting compared to standard 316L stainless steel.

ASTM A182 SS 904L Instrumentation Tube Fittings Mechanical Properties

Density

Melting Point

Tensile Strength

Yield Strength (0.2%Offset)

Elongation

7.95 g/cm3

1350 °C (2460 °F)

Psi – 71000 , MPa – 490

Psi – 32000 , MPa – 220

35 %

Testing of Stainless Steel 904L Instrumentation Tube Fittings

Our Stainless Steel 904L Instrumentation Tube Fittings are manufactured with high precision to ensure accurate dimensions and reliable performance. Each product undergoes strict quality control procedures before dispatch.

We perform both destructive and non-destructive testing methods to guarantee durability, strength, and corrosion resistance.

Key Tests Conducted:

  • Eddy Current Testing
  • Hydrostatic Pressure Testing
  • Pitting Corrosion Resistance Test
  • Positive Material Identification (PMI)

These tests ensure suitability for demanding applications, including the power generation sector and other critical industries.

Packaging of Stainless Steel 904L Instrumentation Tube Fittings

We adopt secure and industry-approved packaging methods to ensure safe delivery and prevent any damage during transit.

Our Standard Packaging Options Include:

  • Heavy-duty Wooden Boxes
  • Export-grade Wooden Pallets
  • Shrink-Wrapped Packaging
  • Durable Carton Boxes
  • Industrial Wooden Crates

Each package is clearly labelled with product grade, heat number, size, and quantity for easy identification and traceability.

SS 904L Instrumentation Tube Fittings — Metric & Inch Dimensions

We offer Stainless Steel 904L Instrumentation Tube Fittings in both metric and inch dimensions, complying with international standards to meet diverse industrial requirements.

Metric Size Range (Dimensions in mm) 

Part No

Tube Size (mm)

Thread Size

Length (L1)

Body (C)

Nut (G)

4MMC2

4

1/8″

31.35

16.67

12

4MMC4

4

1/4″

35.72

16.67

12

6MMC2

6

1/8″

33.34

18.26

14

6MMC4

6

1/4″

33.34

18.26

14

6MMC6

6

3/8″

38.89

18.26

14

8MMC4

8

1/4″

39.29

19.05

17

10MMC4

10

1/4″

40.48

19.84

19

12MMC8

12

1/2″

48.42

22.23

22

16MMC8

16

1/2″

49.21

22.23

27

18MMC12

18

3/4″

50.80

22.23

30

Inch Size Range (Dimensions in Inches) 

Part No

Tube Size (Inch)

Thread Size

Length (L1)

Body (C)

Nut (G)

1MC2

1/16

1/8

1.00

0.44

0.31

2MC4

1/8

1/4

1.41

0.63

0.44

3MC4

3/16

1/4

1.42

0.63

0.50

4MC4

1/4

1/4

1.50

0.72

0.56

6MC6

3/8

3/8

1.57

0.76

0.69

8MC8

1/2

1/2

1.90

0.86

0.88

10MC8

5/8

1/2

1.93

0.86

1.00

12MC12

3/4

3/4

1.99

0.86

1.12

16MC16

1

1

2.45

1.04

1.50

Applications of Stainless Steel 904L Instrumentation Tube Fittings

SS 904L Instrumentation Tube Fittings are specified where standard 316L stainless steel fails — particularly in chloride-rich, acidic, or high-temperature environments. The alloy’s low carbon content and elevated Mo/Ni levels prevent intergranular corrosion and pitting, making it the preferred choice across the following demanding sectors:

Thanks to their superior performance in aggressive and high-temperature environments, these fittings are widely used across various industrial sectors.

Key Application Areas:

  • Petrochemical Processing Plants
  • Power Generation Facilities
  • Food & Beverage Processing Units
  • Oil and Gas Industry
  • Sugar and Ethanol Plants

These fittings are especially suitable for applications requiring high resistance to acids, chlorides, and harsh operating conditions.

SS 904L vs SS 316L — Why Choose 904L for Instrumentation Fittings?

While Stainless Steel 316L is widely used for general-purpose corrosion resistance, SS 904L offers significantly enhanced performance in more aggressive environments.

Key Advantages of SS 904L over SS 316L:

  • Superior Acid Resistance: Higher molybdenum (Mo) and copper (Cu) content provide excellent resistance to sulfuric and phosphoric acids.
  • Enhanced SCC Resistance: Improved protection against chloride-induced stress corrosion cracking.
  • Better Performance in Reducing Environments: SS 904L performs reliably in conditions where 316L may fail.

When to Choose SS 904L:

  • Process fluids contain more than 5% sulfuric acid
  • High chloride concentration environments
  • Operating temperatures exceed 60°C in acidic conditions
FAQ’s About SS 904L Tube Fittings

Stainless Steel 904L Instrumentation Tube Fittings are high-performance fittings made from low carbon, high alloy stainless steel, designed for excellent corrosion resistance and durability in critical applications.

These fittings offer superior resistance to corrosion, high strength, excellent weldability, and long service life, especially in harsh and acidic environments.

They are widely used in industries such as petrochemical, oil & gas, power generation, food processing, and chemical processing plants.

Yes, Stainless Steel 904L fittings perform well in high-temperature and high-pressure conditions, making them ideal for demanding industrial environments.

Common tests include hydrostatic testing, eddy current testing, pitting resistance testing, and positive material identification (PMI) to ensure quality and performance.

Other Available Stock of Stainless Steel 904L Instrumentation Tube Fittings
  • SS 904L Swagelok instrumentation fittings
  • ASTM A182 904L Stainless Steel Reducing Union Tee
  • DIN 1.4539 45 Degree Positionable Male Elbow
  • ASTM A276 Stainless Steel 904L Ferrule Nut
  • SS 904L Positionable Male Run Tee
  • Stainless Steel AISI 904L Hex Plug
  • ASTM A182 SS 904L Tube End Closure
  • ASME SA182 904L Stainless Steel Fitting End Closure
  • 904L Stainless Steel Parker Compression Fittings
  • Stainless Steel A182 904L Bulkhead Reducing Union
  • Stainless Steel 904L Hydraulic Fittings in India
  • SS 904L Single Ferrule Compression Fitting
  • Stainless Steel 904L Ferrule Fitting Supplier
  • 904L SS Tube to Union
  • SS 904L Hose Male Adapter
  • Stainless Steel 904L Positionable Male Elbow
  • Stainless Steel SUS 904L Hex Nipple
  • Stainless Steel 904L Hex Bushing
  • SA479 Stainless Steel 904L Male Adapter
  • Stainless Steel 904L Female Adapter
  • Stainless Steel 904L Allen Key Plug
  • SS 904L Instrumentation Pipe Fittings
  • SS UNS N08904 Tube Cap Fittings
  • SS 904L Tylok Instrumentation Fittings
  • 904L Stainless Steel Union Joint Ball
  • 904L SS Two Ferrule Compression Fitting
  • Stainless Steel 904L Ferrule Tube Fittings
  • SS 904L High Pressure Hydraulic Tube Fittings
  • 904L EN 1.4539 Barbed Male Adapter
  • AISI 904L Hose Connector Sleeve
Suppliers and Exporters of Stainless Steel 904L Compression Tube Fittings in Countries Like
Poland, Ghana, Russia, Mexico, Zimbabwe, Croatia, Gabon, Namibia, Nigeria, Argentina, Israel, Poland, Greece, Yemen, srilanka, United States, Afghanistan, Lithuania, Japan, Philippines, Chile, Peru, Canada, Iran, United Arab Emirates, Turkey, Puerto Rico, Serbia, Belarus, brazil, Lebanon, United Kingdom, Portugal, New Zealand, Sweden, Chile, Norway, mexico, Bahrain, Tibet, France, Mexico, malaysia, Italy, Brazil, Costa Rica, South Korea, Sri Lanka, Estonia, Netherlands, Thailand, thailand, Ecuador, Oman, China, Ukraine, India, Finland, Jordan, Venezuela, Trinidad & Tobago, Macau, Malaysia, Gambia, Denmark, Qatar, Bulgaria, cyprus, Slovakia, Morocco, Indonesia, Libya, Egypt, Czech Republic, Azerbaijan, Kenya, Belgium, Saudi Arabia, Kuwait, Australia, South Africa, Romania, Ireland, Mongolia, Bhutan, Bangladesh, Kazakhstan, Tunisia, Hungary, Iran, Vietnam, Singapore, Colombia, Bolivia, Nepal, Nigeria, Spain, Germany, Algeria, Switzerland, Austria, Taiwan, Hong Kong.

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