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Stainless Steel 304 Pipe Fittings

Stainless steel 304 pipe fittings

What are the advantages of using stainless steel 304 buttweld fittings in a piping system?

Chromium-and-nickel chemical composition in a classic 18-8 percent renders these fittings beneficial for various industrial clients. Stainless steel 304 buttweld fittings also contain carbon (a maximum of 0.08%). Their strength is excellent: a tensile rating of 515MPa and a yield strength of 205MPa. Besides, they also resist extreme temperatures up to 870°C.

Here are some more benefits of using ASTM A403 WP304 pipe fittings:

  • Good toughness, with a Brinell hardness of 210HB
  • Decent corrosion resistance for average exposure
  • Available in different sizes and designs, for example, an SS 304 reducer to connect pipes of varying diameters

The industrial applications of a stainless steel 304 elbow are vast and valuable. They work across petrochemicals and chemical processing, architecture to oil and gas production, and manufacturing, kitchen utensils, and medical devices.

Manufacturer of ASTM A403 WP304 Elbow in India, Check Specification and Price per KG

Specification of stainless steel 304 buttweld fittings

  Stainless steel 304 pipe fittings specification  

North America's favourite stainless steel 304 pipe fittings supplier ship to USA with in 60 days

Country  Name  Delivery Time
USA  45-60 days
Canada  60-70 days
Mexico  30-40 days
Panama  40
Costa Rica  50
Bahamas  wrong
Denmark  40-50

Get SS 304 Buttweld Fittings in Variety of Sizes, Check Dimension Chart Below

Dimensions of SS 304 pipe fittings


Nominal
Pipe
Size
Outside
Diameter
Caps Straight Tees Straight Crosses Stub Ends
(inches) (inches) (mm) Center to End
(inches)
Length
(inches)
Center to End
(inches)
Long Length
(inches)
Lap Diameter
(inches)
Short Length
(inches)
3/4 1.050 26.7 1 1/8 1 3 1 11/16 2
1/2 0.840 21.3 1 1 3 1 3/8 2
1 1/2 1.900 48.3 2 1/4 1 1/2 2 1/4 4 2 7/8 2
1 1.315 33.4 1 1/2 1 1/2 1 1/2 4 2 2
1 1/4 1.660 42.2 1 7/8 1 1/2 1 7/8 4 2 1/2 2
2 1/2 2.875 73.0 3 1 1/2 3 6 4 1/8 2 1/2
2 2.375 60.3 2 1/2 1 1/2 2 1/2 6 3 5/8 2 1/2
3 3.500 88.9 3 3/8 2 3 3/8 6 5 2 1/2
4 4.500 114.3 4 1/8 2 1/2 4 1/8 6 6 3/16 3
3 1/2 4.000 101.6 3 3/4 2 1/2 3 3/4 6 5 1/2 3

Which strict testing methods ensure the quality and performance of stainless steel 304 buttweld fittings?

Since these components operate in many critical sectors, adequate testing for performance and quality standards is essential. Most manufacturers issue a Mill Test Certificate for stainless steel 304 pipe fittings, documenting test results for radiography, spectrometry, tensile strength, hardness, and corrosion resistance.

An ASME SA403 SS 304 tee may also undergo other NDT or mechanical tests like ultrasonic and magnetic particle inspection. These tests can accurately identify defects like cracks, discontinuities, deviations from standards, and potential triggers compromising the performance of a WNR 1.4301 pipe bend.

Types of Stainless Steel 304 pipe Fittings


SS 304 elbow

SS 304 elbow

SS 304 buttweld fittings

SS 304 buttweld fittings

SS 304 Reducer

SS 304 Reducer

SS 304 end cap

SS 304 end cap

Find SA403 WP304 Tee in +/-12.5% and Custom Tolerance, Check Tolerance Chart

Tolerance of SS 304 buttweld fittings


Nominal Diameter ID for end OD for bevel end Wall thickness Elbow Tee Reducer Cap 180°elbow
NPS DN B A M C H E K O Roughness
3-4 80-100 1.6 1.6 -12.50%           6.4     0.8
10-18 250-450 3.2 +4/-3.2 2.4 2.4 2.4 2.4 2.4     9.6
1/2-2 1/2 15-65 0.8 +1.6/-0.8 1.6 1.6 1.6 1.6 1.6 3.2 6.4 6.4
5-8 125-200 4.8 +2.4/-1.6                
20-24 500-600 +6.4/-4.8 3.2 3.2 3.2 3.2 4.8 9.6
32-48 800-1200   4.84.84.84.8    
26-30 650-750      
           
50-60 1250-1500 6.4 +9.6/-6.4 9.6 9.6 9.6 9.6 9.6
72-80 1800-2000 12 +16/-12 16 16
62-70 1550-1750 9.6 +12.7/-9.6 12.7 12.7

How does the excellent corrosion resistance of stainless steel 304 buttweld fittings make them suitable for use in harsh and corrosive environments?

This grade of stainless steel is known for above-average resistance to corrosion in different forms, like general, pitting, crevice, etc. A UNS S30400 stub end can withstand many abrasives, including nitric acid, alkalis, and bases like sodium hydroxide. It makes it perfect for the chemical and food processing industries.

However, stress corrosion cracking can occur in chloride-rich environments like seawater. An SS 304 end cap displays lower resistance to saltwater and oxidizing acids than some other grades.

Get AISI 304 Reducer in Schedule 10 to SCH 160 as Per ASME B16.9 Standard, Check Equivalent Properties and Applications

Equivalent properties of 304 stainless steel tee


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

Applications of SS 304 cap


  • → Petrochemical / chemical
  • → Oil and gas
  • → Food, beverage and dairy
  • → Power
  • → Process instrumentation
  • → constructions
Check UNS S30400 Weld Fittings Chemical Composition and Density Kg/mm3 Before Purchasing It

Chemical composition of SS 304 elbow


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

Mechanical properties of SS 304 reducer


Grade Density Melting points Tensile strength Yield strength(0.2% offset) Elongation
SS 8000 kg/m3 1400°C (255°F) PSI-75000, MPa-515 PSi-30000, MPa-205 35%

Material testing of UNS S30400 tee


  • Mechanical testing (tensile of area)
  • Chemical analysis (spectro analysis)
  • Hardness test
  • Micro and macrotest
  • Positive material identification (PMI testing)
  • Flaring test
  • Flattening test
  • Pitting resistance test
  • Intergranular corrosion (IGC) test