ASME/ASTM SB-423

High Nickel Alloy Pipes

ASME/ASTM SB-423 INCOLOY 8825 Pipes

Reliable Steel is a notable supplier and exporter of ASME SB 423 Pipes/Tubes in all over the world. We offer best quality ASME SB 423 - UNS NO8825 Pipes/Tubes which is most durable and cost-effective. We fabricated ASME SB 423 Pipes/Tubes in various sizes and lengths. Our ASME SB 423 used in chemical processing, oil & gas, and pollution control equipment.

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SB 423 UNS 8825 refers to ASTM/ASME SB-423, the standard specification for seamless pipes and tubes made from Incoloy Alloy 825 (UNS N08825), a high-performance nickel-iron-chromium alloy known for its exceptional resistance to various corrosive environments, including sulfuric, phosphoric, and nitric acids, making it ideal for chemical processing, oil & gas, and pollution control equipment.

SB 423 UNS 8825 pipes are premium stainless steel pipes (Incoloy 825) built tough for extreme corrosion, often used in heavy-duty industrial settings where regular steel would fail.


SB 423 UNS NO8825 Chemical Composition

C MN S Si Cr Ni Mo Cu Ti Al Fe Other
0.05 max 1.0 max 0.03 max 0.5 max 19.5 - 23.5 38.0 - 46.0
2.5 - 3.5 1.5 - 3.0 0.6 1.2 0.2 max 22.0 min 3.15 4.15

SB 423 UNS NO8825 Pipe Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
825 Psi - 80,000 , MPa - 550 Psi - 32,000 , MPa -220 30 - -

SB 423 Incoloy 8825 Pipe Pressure Rating

Alloy 400
Tube O.D.
(in.)
Wall Thickness of Tube (inches)
.028 .035 .049 .065 .083 .095 .109 .120
Working Pressure (psig)
1/8 7900 10100
1/4 3700 4800 7000 9500
5/16 3700 5400 7300
3/8 3100 4400 6100
1/2 2300 3200 4400
3/4 2200 3000 4000 4600
1 2200 2900 3400 3900 4300

SB 423 Incoloy 8825 Pipe Grade Equivalent Material

Grade UNS No Old British Euronorm GOST Japanese JIS
BS En No AFNOR
Incoloy 825 N08825 NA 16 NiCr21Mo 2.4858 NFE30C20DUM ЭП703 NCF 825

Typical Applications

  • Chemical processing equipment
  • Pollution control systems
  • Oil and gas well piping
  • Acid production and pickling operations
  • Nuclear fuel reprocessing and handling of radioactive wastes
  • Marine exhaust systems and other seawater applications