INCONEL 625 / ALLOY 625 NICKEL/UNS NO6625 Seamless Pipe and Tube

HomeProducts & servicesNickel Alloy/ Hastelloy/ Monel/ Inconel Steel tube and Pipe INCONEL 625 / ALLOY 625 NICKEL/UNS NO6625 Seamless Pipe and Tube
INCONEL 625 / ALLOY 625 NICKEL/UNS NO6625 Seamless  Pipe and Tube

INCONEL 625 / ALLOY 625 NICKEL/UNS NO6625 Seamless Pipe and Tube

① STANDARD: ASTM B161/ ASTM B163/ ASTM B167/ ASTM B444/ ASTM B622 ...

② OD RANGE : 6-457 MM

③ THICKNESS RANGE: 1-45 MM

Chemical Composition

Grade
C
Mn
Si
P
S
Cr
Nb + Ta
Co
Mo
Fe
Al
Ti
Ni
625
≤0.10
≤0.50
≤0.50
≤0.015
≤0.015
20.0 - 23.0
3.15 -4.15
≤1.0
8.0-10.0
≤5.0
≤0.40
≤0.40
Bal

Mechanical Properties

Material

Form and Condition

Tensile Strength MPa

Yield Strength (0.2% Offset)

Elongation 4D(%)

Hardness HB


ksi

MPa

ksi

MPa

Alloy 625 Bar

Annealed

≥120

≥827

≥60

≥414

≥30

≤ 287 HB

Alloy 625 Sheet

Annealed

≥120

≥827

≥60

≥414

≥30

145-240

Alloy 625 Tube3

Annealed

≥120

≥827

≥60

≥414

≥30

-

Alloy 625 Tube4

Solution annealed

≥100

≥690

≥40

≥276

Note:

1. Hot forming quality pipe and tubing is furnished to chemical requirements and surface inspection only. No tensile properties are required.

2. The minimum strength values apply only to tubing in straight lengths.

3. Annealed at 1600 F (871 °C) minimum.

4. Solution annealed at 2000 °F (1093 °C) minimum, with or without subsequent stabilization anneal at 1800 °F (982 °C) minimum to increase resistance to sensitization.

Standard

Pipe Seamless

ASTM B444, ASTM B829, ASME SB 444, ASME SB 829, BS3074 NA21

Pipe Welded

ASTM B705, ASTM B775, ASME SB 705, ASME SB 775

Tube Seamless

ASTM B444, ASTM B829, ASME SB 444, ASME SB 829, AMS 5581, BS3074 NA21, AMS 5581 Type 1

Tube Welded

ASTM B704, ASTM B751, ASME SB 704, ASME SB 704, AMS 5581, AMS 5581 Type 2

Tube

VdTUV 499, ISO 6207, DIN 17751, ASME Code Case 1935

Fittings

ASTM B 366, ASME SB 366

Applications

  • Seawater components
  • Flare stacks
  • Aircraft ducting systems
  • Fabrication with Inconel 625
  • Specialized seawater equipment
  • Chemical process equipment
  • Turbine shroud rings
  • Engine thrust-reverser systems
  • Jet engine exhausts systems
  • Boiler furnaces

Material Grade

Inconel Alloy 625 (UNS designation N06625) is a nickel-based superalloy that possesses high strength properties and resistance to elevated temperatures. It also demonstrates remarkable protection against corrosion and oxidation. Its ability to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a fitting choice for nuclear and marine applications.

Inconel 625 was developed in the 1960s with the purpose of creating a material that could be used for steam-line piping. Some modifications were made to its original composition that have enabled it to be even more creep-resistant and weldable. Because of this, the uses of Inconel 625 have expanded into a wide range of industries such as the chemical processing industry, and for marine and nuclear applications to make pumps and valves and other high-pressure equipment.

Because of the metal's high Niobium (Nb) levels as well as its exposure to harsh environments and high temperatures, there was concern about the weldability of Inconel 625. Studies were therefore conducted to test the metal's weldability, tensile strength and creep resistance, and Inconel 625 was found to be an ideal choice for welding. Other well-known names for Inconel 625 are Haynes 625, Nickelvac 625, Nicrofer 6020, Altemp 625 and Chronic 625

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