904L Tube Fittings

SS 904L Instrumentation Fittings and ASME SB 649 904L Hydraulic Fittings manufacturer in India

ASTM B649 is a specification that covers low carbon alloys like grade 904L. This highly alloyed super austenitic stainless steel performs well in high temperature settings. The ASTM B649 UNS N08904 904L Ferrule Fittings are supplied either in a cold drawn or a solution treated state. Generally, the chemistry of the fittings under this specification is checked via a chemical or product analysis. And the properties concerning the tensile requirements of the Stainless Steel UNS N08904 Double Ferrule Tube Fittings like elongation, tensile and yield strength, are determined with the aid of a tension test.

For forged quality material such as the 904L Tube Fittings, a heat treatment process is waived. A hydraulic Stainless Steel 904L Tube Fittings are produced in a strict manner, such that it adheres to the pressure rating, type of construction and dimensions. The reason for stringent requirements of the ASME SB 649 SS 904L Hydraulic Fittings is because they are designed for use in industries dealing with high pressured environments. On the other hand, the use of 904L Instrumentation Fittings is for both low pressure and high pressure applications, where convey, measure and handle system flow, pressure as well as the temperature, while making provisions for system calibration. A typical sight in electrical conduit and plumbing systems, SS 904L Compression Fittings are more reliable in comparison to a threaded type.

SS 904L Compression and Ferrule Fittings in BSPP, BSPT and ISO / BSP thread forms

Os-Lok is your superior alternative to Swagelok fittings & Parker A-lok.  Similar to Parker Instrumentation fittings, Os-Lok 904L Tube Fittings work reliably on both seamless and welded-redrawn, fully annealed SA 213 TP304, SA 213 TP316 and SA 213 TP316L Tubing.

Grade 904L Stainless Steel Tube Fitting sizes

Grade 904L Stainless Steel Seamless Tube Fittings

  • Size: 1/8" to 2"
  • Pressure Rating: 3000psi -10000psi
  • Threads :NPT , BSPT, BSPP

ASTM B649 UNS N08904 Welded Tube Fittings & Tube Adapters

  • Size: 24" to 96" or custom
  • Pressure Rating: 3000psi -10000psi
  • Threads :NPT , BSPT, BSPP

ASTM B649 UNS N08904 High Pressure Tube Fitting Specification

Check ASTM A276 UNS N08904 Tube adapters and 904L Double Ferrule Tube Fittings dimensions and pressure rating

ASME B1.1 Materials Standard & Specification

Stainless Steel 904L Tube Fittings
Straight fittings and tube adapters Elbows, crosses, and tees
ASTM A276, ASME SA479 ASTM A182, ASME SA182
PSI Pressure Ratings
  • High Pressure Tube Fittings
  • Low Pressure Tube Fittings
  • 3000 PSI
  • 6000 PSI
  • 10000 PSI
  • 15000 PSI
  • 20000 PSI
  • 400 Bar
Pipe Threads
  • NPT (ASME B1.20.1, MILL-P-71058)
  • ISO Parallel - BSPP (BS 2779, ISO 228, JIS B 0202)
  • ISO Tapered - BSPT (BS 21, ISO 7, JIS B 0203)
  • ISO / BSP (Gauge) (ISO 228, BS 2779)
  • Unified (SAE) (ASME B 1.1)
904L Tube Fittings Other Trade name
  • Grade 904L Stainless Steel Instrumentation Fittings
  • ASTM B649 UNS N08904 Pneumatic Fittings
  • SS 904L Compression Fittings
  • 904L Stainless Steel Push-To-Connect Fittings
  • ASTM A276 UNS N08904 Stainless Steel Hydraulic Fittings
  • AISI 904L Stainless Steel Hydraulic Hose Fittings
  • Stainless Steel 1.4539 904L Compression Tube Fittings
  • 904L EN 1.4539 Instrumentation Tube Fittings
  • AISI 904L Double Ferrule Fittings
  • 904L SS Double Ferrule Tube Fittings
  • ASTM B649 UNS N08904 904L Ferrule Fittings
  • Alloy 904L Twin Ferrule Fittings
  • 904L Alloy JIC Fittings
  • Stainless Steel Alloy 904L Flare Fittings
Features
  • Easy to disconnect and retighten.
  • Available in wide configurations
  • Various Sizes
  • Best choice for instrumentations, process & control systems
  • Zero leakage even under tough working conditions
  • Gaugeable Bodies
  • Excellent gas-tight seal
  • 904L Tube Fittings are fully interchangeable with Swagelok
  • Leak-proof joints capable of satisfying high pressure vacuum and vibration application
Test & Certification ECE R110, EC-79, NACE MR0175/ISO 15156 and MR0103.
We also stock & supply
  • Swagelok Tube Fittings
  • Parker Fittings
  • DK LOK Fittings
  • Hamlet Letlok Fittings
  • DUOLOK Fittings
  • GYROLOK Fittings
  • TYLOK Fittings
  • BILOK Tube Fittings
Port Mumbai, India
Our representatives

We have our sales representatives in folowing locations:

  • Philippines
  • Malaysia
  • UAE
  • Saudi Arabia
  • Singapore
  • Korea
  • Germany
  • Indonesia
  • Qatar
  • UK
  • Vietnam
  • Australia
  • USA

Types of 904L Stainless Steel Compression Tube Fittings

Grade 904L Stainless Steel Tube to Male Pipe Thread

Grade 904L Stainless Steel Tube to Male Pipe Thread

  • 904L Stainless Steel Tube to Male Connector
  • AISI 904L Stainless Steel Tube to Bulkhead Male Connector
  • AISI 904L Tube to Male Elbow (45 Degree)
  • ASTM A276 UNS N08904 Stainless Steel Tube to Male Branch Tee
  • ASTM B649 UNS N08904 Tube to Male Run Tee

ASTM B649 UNS N08904 Tube to Female Pipe Thread

ASTM B649 UNS N08904 Tube to Female Pipe Thread

  • Grade 904L Stainless Steel Tube to Female Connector
  • SS 904L Tube to Bulkhead Female Connector
  • 904L Stainless Steel Tube to Female Elbow
  • Stainless Steel 1.4539 904L Tube to Female Branch Tee
  • 904L EN 1.4539 Tube to Female Run Tee

SS 904L Tube Ends

SS 904L Tube Ends

  • ASTM B649 UNS N08904 Tube Cap
  • 904L Alloy Plug
  • 904L SS Cap for Tube End
  • 904L EN 1.4539 Caps and Plugs
  • SS 904L NPT Thread Cap

904L Stainless Steel Tube to Tube

904L Stainless Steel Tube to Tube

  • SS 904L Tube to Tube Union
  • Grade 904L Stainless Steel Tube to Tube Reducer Union
  • ASTM A276 UNS N08904 Stainless Steel Tube to Tube Bulkhead Union
  • 904L EN 1.4539 Tube to Tube Bulkhead Reducer Union
  • AISI 904L Tube to Tube Bulkhead Union Elbow

ASTM A276 UNS N08904 Stainless Steel Port Connector

ASTM A276 UNS N08904 Stainless Steel Port Connector

  • SS 904L Reducer
  • Grade 904L Stainless Steel Bulkhead Reducer
  • ASTM A276 UNS N08904 Stainless Steel Male Adapter
  • 904L EN 1.4539 Female Adapter
  • AISI 904L Weld Adapter

AISI 904L Stainless Steel Weld Fitting

AISI 904L Stainless Steel Weld Fitting

  • SS 904L Tube Socket Weld Union
  • Grade 904L Stainless Steel Tube Socket Weld Elbow
  • ASTM A276 UNS N08904 Stainless Steel Male Pipe Weld Connector
  • 904L EN 1.4539 Male Pipe Weld Elbow

Stainless Steel 1.4539 904L Special Fitting

Stainless Steel 1.4539 904L Special Fitting

  • SS 904L Sanitary Flange
  • Grade 904L Stainless Steel Lap Joint Flange Connector
  • ASTM A276 UNS N08904 Stainless Steel Integral Flange Connector
  • 904L EN 1.4539 Vent Protector

904L EN 1.4539 Hose Fitting

904L EN 1.4539 Hose Fitting

  • SS 904L Hose Male Adapter
  • Grade 904L Stainless Steel Hose Tube Adapter Swaged
  • ASTM A276 UNS N08904 Stainless Steel Hose Port Connector - Serrated
  • 904L EN 1.4539 Barbed Male Adapter
  • AISI 904L Hose Connector Sleeve

AISI 904L Tube Fitting Accessories

AISI 904L Tube Fitting Accessories

  • SS 904L Front Ferrule
  • Grade 904L Stainless Steel Back Ferrule
  • ASTM A276 UNS N08904 Stainless Steel Nut
  • 904L EN 1.4539 Fitting Gasket
  • AISI 904L O-Seal Connector Lock Nut

SS 904L Ferrule Tube Fittings Pressure Rating

NPT/ISO Ratings as per ASME B31.3 (Ambient temperature Process Piping)

  MALE FEMALE
NPT/BSPT Straight Shape Straight Shape
1/16 10000 9500 7500 7000
1/8 09100 9100 6400 5500
1/4 07500 7500 6600 5600
3/8 07200 7200 5300 5000
1/2 06600 5800 5200 4500
3/4 06400 6400 4300 3500
1 04600 4600 4500 3900
1-1/4 03500 3500 3500 3100
1-1/2 02900 2900 3200 2500
2 02600 2600 2700 2300

ASTM A276 UNS N08904 Stainless Steel Single Ferrule Fittings Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.5 g/cm3 1510 °C (2750 °F) Psi - 75,000 , MPa - 485 Psi - 40,000 , MPa - 275 20 %

AISI 904L Stainless Steel Instrumentation Tube Fittings Chemical Composition

Grade C Mn Si P S Cr Mo Ni N Fe
SS 904L 0.2 max 1.5 max 0.75 max 0.04 max 0.030 max 23 - 30 - 0.50 max 0.10 - 0.25 Balance

Stainless Steel 1.4539 904L Double Ferrule Tube Fittings Equivalent

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
SS 904L 1.4539 N08904 - - - - -