• An ISO 9001:2015 Certified Company
  • Call

    +91 9930108105

  • Address

    Sanghvi Galaxy, Shop No.2, Khetwadi
    10th Lane, Mumbai-400004, India

Stainless Steel 904L Forged Fittings

Stainless Steel 904l forged fittings specification

What are Stainless Steel 904L Forged Fittings?

This superaustenitic stainless steel contains chromium, nickel, molybdenum, and copper. Stainless steel 904L forged fittings can withstand corrosive attacks and show suitability to sanitary environments and high-pressure conditions. As a rule, forging involves compressive forces and creates more durable components.

Several types of 904L socketweld fittings get produced for different customer needs, including unions and couplings. They operate in chemical processing, shipbuilding, power generation, and construction.

From SS 904L threaded fittings to nipples, bushings, and crosses, manufacturers can cater to specialised needs for these performance-oriented products.

SS 904l socket weld coupling supplier in India, view advantages of using SS 904l forged elbow


Specification of stainless Steel 904l forged fittings

Specifications Size Class
ASTM B649 / ASME SB649 1/8" – 4" NB 2000 LBS, 9000 LBS, 3000 LBS, 6000 LBS
Standard Surface finish Types
83, ASME 16.11, MSS SP-79, BS 3799, 95, 97 Sand Rolling / sand blasting Forged fitting, socket weld fittings, threaded fittings, coupling, union, bushing, plug
Technics Pressure Thread
Forged Pn6/10/16/25/40/63 BSPP, BSPT, NPT

Check with us benefits of using stainless steel 904l threaded fittings in various industries

What makes Stainless Steel 904L Forged Fittings stand out in delivering high-quality performance in industrial environments?

A stainless steel 904L socket weld elbow has low carbon (0.02%), reducing the risk of intergranular corrosion. Its chemical composition helps deliver excellent performance in corrosive conditions and high temperatures.

An SS 904L threaded tee can handle extreme temperatures up to 450°C and tolerate attacks from dilute sulfuric acid and seawater. Note that these fittings can be expensive.

A 904L SS pipe nipple can use socket welding or threading, depending upon the application. The former uses fillet welds and is better for stressful applications, while threaded components get screwed onto the pipe.

Types of SS 904l socket weld fittings


SS 904l threaded elbow

SS 904l threaded elbow

ASTM A182 F904L socket weld fittings

ASTM A182 F904L socket weld fittings

DIN 1.4539 socket weld half coupling

DIN 1.4539 socket weld half coupling

UNS N08904 threaded nipple

UNS N08904 threaded nipple

We are using the latest magnetic test to ensure the highest quality and integrity of 904L SS threaded plug

Which factors affect the results of a magnetic test on Stainless Steel 904L Forged Fittings?

NDT, or non-destructive procedures, are a core part of quality testing an ASTM A182 F904L plug. A magnetic test can work for stainless steel components if the alloy contains iron and its structure is martensitic or ferritic. Austenite grades don’t display magnetic properties.

This test involves using a magnet to gauge the response of the material. Besides the grade, it is crucial to be wary of other factors that can impact the magnetic test results of 904L SS bushing.

  • Precipitation hardening
  • Welding and fabrication
  • Presence of magnetic fields interfering with welding
  • Electric currents affecting the test results

We specify the results of a DIN 1.4539 socket weld half coupling in the Mill Test Certificate. It helps clients select products compatible and safe for their application.

Testing methods of SS 904l union


  • → Pure raw material
  • → Tensile test certificates
  • → Hardness test certificates
  • → Ductility
  • → Flexibility
  • → Formability
  • → Weldability
  • → Durability
  • → Machinability
  • → Corrosion-resistance

Chemical composition of SS 904l coupling


C Mn Si P S Cr Ni
0.08 max
2 max
0.75 Max
0.045 max
0.030 max
18 - 20
8 - 11
We offer a range of surface finishes for ASTM A182 F904L socket weld tee and DIN 1.4539 forged half coupling including custom options

Mechanical properties of SS 904l socket weld tee


Grade Density Melting points Tensile strength Yield strength Elongation
SS 8.0g/ cm3 1400°C (255°F) PSI-75000, MPa-515 PSi-30000, MPa-205 35%
Find here pressure rating for UNS N08904 nipple based on the specific requirements of your application

Dimension and pressure ratings of SS 904l forged fittings


Forged pipe fittings size 1/8"-4" (DN6~DN100)
ASME B16.11 forged fittings products Elbow 90 deg, tee, elbow 45 deg, cross, coupling, union, half coupling, cap, outlet, boss, insert, welding outlet
Forged fittings pressure class 6000LBS, 3000LBS, 9000LBS
Socket eeld fitting specifications ASME 16.11, BS 3799, 95, MSS SP-79, 97, 83

Equivalent grade of SS 904l threaded elbow


Standard Werkstoff nr. UNS JIS BS GOST AFNOR EN
SS 1.4301 S30400 SUS 304 304S31 08X18H10 Z7CN18-09 X5CrNi18-10

Different types of SS 904l socket weld fittings


Stainless steel 904l couplings Stainless steel 904l socket weld cross Stainless steel 904l forged reducers
SS 904l socket weld caps Stainless steel 904l socket weld unions SS 904l socket weld tee
SS 904l socket weld 90° elbows SS 904l socket weld half coupling SS 904l socket weld full coupling
Stainless steel 904l screwed 45° elbows Stainless steel 904l screwed tee Stainless steel 904l screwed 90° elbows
SS 904l socket weld 45° elbows SS 904l screwed unions SS 904l socket weld reducing coupling
904l stainless steel screwed cross Stainless steel 904l screwed squared plug Stainless steel 904l screwed hex plug
Stainless steel 904l screwed half couplings Stainless steel 904l screwed caps SS 904l screwed reducing couplings
Stainless steel 904l screwed hex nipple Stainless steel 904l screwed full coupling Stainless steel 904l screwed bushing
Stainless steel 904l weldolet Stainless steel 904l threadolet 904l stainless steel sockolet
SS 904l concentric swage nipple SS 904l forged pipe nipple Stainless steel 904l eccentric swage nipple
Stainless steel 904l elbolet Stainless steel 904l latrolet Stainless steel 904l nipolet

Weight chart of SS 904l socket weld elbow


SIZE QTY A B WEIGHT
½ 100 1.31 1.12 0.57
1 40 1.81 1.5 1.08
¾ 75 1.5 1.31 0.71
1 ¼ 25 2.19 1.75 1.68
2 10 2.97 2.38 3.55
1 ½ 18 2.44 2.00 2.38
2 ½ 4 3.62 3.00 6.22
4 1 5.75 4.19 23.91
¼ 160 0.88 0.81 0.20
3 2 4.31 3.38 10.36

Wall thickness of SS 904l forged fittings


Description Class
3000 9000 6000
Wall thickness SCH 80 & XS XXS SCH 160
Elbows 45° / 90°, half-couplings
tees, End or pipe caps, crosses, couplings
½ - 4 ½ - 2 ½ - 2
½ - 4 ½ - 2 ½ - 2
½ - 4 ½ - 2 ½ - 2