Stainless Steel 904L Fittings Manufacturer and Exporter

The Stainless Steel 904L Fittings are the premium quality of austenitic stainless steel fittings that are commonly used for high-temperature applications and use in industries that need high-quality and corrosion-resistant material. They are available in different thicknesses and pressure levels depending on the specific requirements for the wall. They come in a range of different thicknesses and pressure ratings ensuring they are suitable for a variety of industrial applications. These butt weld fittings are produced as per the standards of ASTM A403 WP904L, ASME B16.9 & ASME B16.28, and are available in a range of nominal pipe sizes from 1/8" to 48". These are commonly used, such as long radius elbows, short radius elbows, reducing elbows, tees, reducers, stub ends, end caps, etc. Solitaire Overseas produces high-quality SS 904L Fittings to the highest standards with precision and reliability, suitable for chemical, marine and high corrosion industries.

Table of Contents

Specification of Stainless Steel 904L Fittings

ParameterDetails
SpecificationsASTM B366 / ASME SB366
Size Range1/8" NB to 48" NB
StandardsASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Type / ConstructionSeamless, Welded (100% X-Ray Checked), Fabricated
Thickness / Schedule5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS

(Available with NACE MR 01-75 sour service compliance)

Chemical Composition of Stainless Steel 904L Fittings

GradeLimitsCMnSiPSCrMoNiN
904Lmin.-----19.04.0023.000.10
max.0.202.001.000.0450.03523.05.0028.000.25

Mechanical Properties of Stainless Steel 904L Fittings

GradeTensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) minHardness: Rockwell B (HR B) maxHardness: Brinell (HB) max
904L4902203570-90 typical-

Equivalent Material of Stainless Steel 904L Fittings

GradeUNS NoOld British: BSOld British: EnEuronorm: NoEuronorm: NameSwedish SSJapanese JIS
904LN08904904S13X1NiCrMoCu25-20-51.4539--SUS 904L

Stainless Steel 904L Fittings Physical Properties

GradeDensity (kg/m3)Elastic Modulus (GPa)Mean Co-eff of Thermal Expansion (µm/m/°C) 0-100°CMean Co-eff of Thermal Expansion (µm/m/°C) 0-315°CMean Co-eff of Thermal Expansion (µm/m/°C) 0-538°CThermal Conductivity (W/m.K) At 20°CThermal Conductivity (W/m.K) At 500°CSpecific Heat 0-100°C (J/kg.K)Elec Resistivity (nΩ · m)
904L790019015--11.5-500952

Different Types of Stainless Steel 904L Fittings

Stainless Steel 904L Concentric Reducer

Stainless Steel 904L Concentric Reducer

Stainless Steel 904L Eccentric Reducer

Stainless Steel 904L Eccentric Reducer

904L Stainless Steel Long Radius Elbow

904L Stainless Steel Long Radius Elbow

ANSI B16.9 904L 90 Degree Elbow

ANSI B16.9 904L 90 Degree Elbow

904L 90 Degree Steel Elbow Pipes

904L 90 Degree Steel Elbow Pipes

904L 45 Degree Steel Elbow Pipes

904L 45 Degree Steel Elbow Pipes

6 Inch Stainless Steel 904L Eccentric Reducer

6 Inch Stainless Steel 904L Eccentric Reducer

2 Inch Sch40 904L Butt Weld Elbow

2 Inch Sch40 904L Butt Weld Elbow

904L UNS N08904 BW SW NPT Nipples

904L UNS N08904 BW SW NPT Nipples

HSN Code of UNS N08904 Fittings

Product GradeHSN Code
Stainless Steel 904L Fittings7307.29.00

Weight Chart of SS 904L Fittings

DNSch 10S: 90° ElbowSch 10S: 45° ElbowSch 10S: Equal TeeSch 40S: 90° ElbowSch 40S: 45° ElbowSch 40S: Equal TeeSch 80S: 90° ElbowSch 80S: 45° ElbowSch 80S: Equal Tee
80.020.010.030.030.020.060.040.030.07
100.030.020.050.030.020.030.060.040.09
150.060.030.090.080.040.100.100.050.14
200.070.030.130.080.040.170.110.050.20
250.140.080.280.150.110.290.220.140.38
320.230.110.490.260.170.590.400.230.68
400.300.170.680.400.230.860.510.291.02
500.500.250.850.700.401.280.910.591.59
650.850.481.411.400.772.191.810.993.13
801.250.631.772.201.083.312.971.504.45
901.700.752.672.831.424.084.002.005.44
1002.101.083.464.472.095.276.182.817.71
1505.452.728.0710.895.4410.9916.328.1613.61
20010.205.3315.6521.5410.7720.9133.1116.5628.12
25018.159.7526.4638.5619.2735.3851.7125.8649.90
30025.8013.6239.4659.4229.7162.1479.3839.6983.91

Size Chart of Stainless Steel 904L Fittings

Nominal Size (Inch)Decimal EquivalentOutside Diameter (O.D.) (Inch)Typical Threads Per Inch (TPI)
1/16"0.3135/16"27
1/8"0.40513/32"27
1/4"0.54035/64"18
3/8"0.67543/64"18
1/2"0.84027/32"14
3/4"1.0501-3/64"14
1"1.3151-5/16"11-1/2
1-1/4"1.6601-21/32"11-1/2
1-1/2"1.9001-29/32"11-1/2
2"2.3752-3/8"11-1/2
2-1/2"2.8752-7/8"8
3"3.5003-1/2"8
3-1/2"4.0004"8
4"4.5004-1/2"8

Applicational Usage of 904L Stainless Steel Fittings

  • Chemical processing equipment and piping
  • Marine and offshore pipe systems
  • Oil & gas processing units
  • Pharmaceutical process lines
  • Acid handling systems
  • Heat exchangers and condensers
  • Desalination plants
  • Power generation plants
  • Pollution control and scrubber systems
  • Pulp and paper industry

Price Chart of Stainless Steel 904L Fittings

Nominal Size (MM)Nominal Size (Inch)FOB Price (USD)
12.70 mm1/2"$5.63
19.05 mm3/4"$8.43
25.40 mm1"$13.93
31.75 mm1-1/4"$24.75
38.10 mm1-1/2"$35.92
50.80 mm2"$56.25
63.50 mm2-1/2"$68.12
76.20 mm3"$81.77
101.60 mm4"$96.63
127.00 mm5"$122.48
152.40 mm6"$174.58
203.20 mm8"$206.52
254.00 mm10"$269.10
304.80 mm12"$315.30

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Frequently Asked Questions

They are corrosion-resistant pipe fittings made from SS 904L, used to connect, change direction, or control flow in piping systems.

It is used in chemical, marine, oil & gas, and pharmaceutical industries where strong corrosion resistance is required.

Yes, 904L has higher corrosion resistance and performs better in highly acidic and aggressive environments than 316L.

They offer excellent corrosion resistance, good weldability, high toughness, and resistance to acids like sulfuric and phosphoric acid.

It is the standard specification for wrought stainless steel 904L butt-weld pipe fittings used in pressure piping systems.

Yes, they can be used in high-pressure systems depending on wall thickness, schedule, and design specifications.

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