Inconel Alloy 625

Inconel Alloy 625 Nickel Alloy
Inconel 625  ·  UNS N06625

Nickel-chromium-molybdenum alloy with niobium addition providing outstanding strength, high fatigue endurance, and broad-spectrum chemical resistance up to 982°C.

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Quick Specifications

Nickel-chromium-molybdenum alloy with niobium addition providing outstanding strength, high fatigue endurance, and broad-spectrum chemical resistance up to 982°C.

Grade Inconel 625
UNS N06625 / 2.4856
Category Nickel Alloy (Superalloy)
Nickel Content 58.0% Minimum
Tensile Strength 827 MPa min

Applicable Standards

01

ASTM B443

→
02

SB 443

→
03

ASTM B446

→
Aerospace Chemical Processing Marine Nuclear Aerospace Chemical Processing Marine Nuclear Aerospace Chemical Processing Marine Nuclear Aerospace Chemical Processing Marine Nuclear

Size Range

1/4" NB to 12" NB

Wall Thickness

SCH 10 to SCH XXS

Standards

3 specs

Chemical Composition (% by weight)

Ni Nickel
58.0 min
Cr Chromium
20.0-23.0
Mo Molybdenum
8.0-10.0
Nb Niobium
3.15-4.15

Mechanical Properties

Tensile Strength
0
MPa Minimum
Yield Strength
0
MPa Minimum
Elongation
0%
Minimum in 50mm

Minimum values at room temperature.

Industries

Steel Solutions Across Critical Industries

Aerospace

Aerospace

Aircraft ducting systems, engine exhaust systems, thrust-reverser systems, and turbine shroud rings.

Chemical Processing

Chemical Processing

Reaction vessels, distillation columns, heat exchangers, and transfer piping handling severe acids.

Marine

Marine

Seawater piping, submarine auxiliary propulsion motors, sheathing for undersea cables, and propeller blades.

Nuclear

Nuclear

Nuclear reactor core components, control rod drive mechanisms, and waste processing equipment.

Frequently Asked Questions about Inconel Alloy 625

Inconel 625 is a nickel-based superalloy strengthened by niobium and molybdenum in a nickel-chromium matrix. It provides immense mechanical strength without requiring precipitation-hardening heat treatment.

NSW Steel supplies Inconel 625 certified to ASTM B443, AMS 5599, NACE MR0175/ISO 15156, and EN 10204 3.2 with full chemical, tensile, and microstructure verification.