ASTM B446 Inconel 625 Uns N06625 Nickel Alloy Hot Rolled Round Rod Bar and Forged for Gas Turbine Discs and Compressor Components

Product Description

Product Description

Inconel 625– Brief Introduction

Inconel 625 is a nickel-chromium-molybdenum-columbium (niobium) solid-solution strengthened superalloy with excellent oxidation resistance, corrosion resistance, and high-temperature strength. The alloy derives its exceptional strength from the solid-solution effects of molybdenum and niobium on the nickel-chromium matrix, eliminating the need for age-hardening treatments.

It exhibits outstanding resistance to chloride-ion stress-corrosion cracking, pitting, and crevice corrosion, making it suitable for seawater and severe corrosive environments. Inconel 625 can operate from cryogenic temperatures up to 980°C

Chemical Composition Element	Content (%)	Note
Nickel (Ni)	≥ 58.0
Chromium (Cr)	20.0 – 23.0
Molybdenum (Mo)	8.0 – 10.0
Niobium + Tantalum (Nb+Ta)	3.15 – 4.15
Iron (Fe)	≤ 5.0
Cobalt (Co)	≤ 1.0
Silicon (Si)	≤ 0.50
Manganese (Mn)	≤ 0.50
Aluminum (Al)	≤ 0.40
Titanium (Ti)	≤ 0.40
Carbon (C)	≤ 0.10
Phosphorus (P)	≤ 0.015
Sulfur (S)	≤ 0.015

Specification

Item	Details
Grade	Inconel 625 / Alloy 625 / UNS N06625 /W.Nr.2.4856
Standard (Pipe/Tube)	ASTM B444 / ASME SB444
Standard (Plate/Sheet)	ASTM B443 / ASME SB443
Standard (Bar/Rod)	ASTM B446 / ASME SB446
Product Forms	Seamless Pipe, Welded Pipe, Seamless Tube, Bar, Sheet, Plate, Strip, Wire, Forgings, Flanges, Fittings
Outer Diameter (Pipe)	6mm – 1000mm
Wall Thickness (Pipe)	0.5mm – 15mm
Bar Diameter	3mm – 300mm
Plate Thickness	0.5mm – 100mm
Test	Flaring test;Flattening test;Bending Test; Hydraulic Test;Eddy Current test
Certificate	ISO9001; ISO14001; PED; CE
Application	Chemical processing equipment, reactor vessels and distillation columns Heat exchangers, condenser tubes and seawater piping systems Aerospace engine exhaust systems, fuel nozzles and ducting Marine risers, submarine sensors and offshore platform piping Nuclear water reactors and nuclear fuel processing equipment Pollution control systems, flue gas desulfurization and scrubbers Concentrated solar power heat receivers and thermal storage systems Sour gas well downhole tubing and high-pressure acid gas injection lines
Material	300 Series:304/304L/309S/310S/316/316 L/321/347
	600 Series: 610/620/630
	Others: Duplex Steel 2205 2507 31803;
	Special Alloy:Incoloy800; Incoloy600; C-276; Monel400; Incoloy925;
	900 Series:904L

Packing & Delivery

Packing

Loading into container

• 1.Waterproof paper wrapping – keeps tubes rust-free during transit
• 2 lifting belts per tube – ensures easy unloading at your port

• 3.Wooden box;

One packing size:6010mm*500*400mm

• Load tubes into containers using overhead cranes
• Secure with steel wire ropes
• Reserve side clearance when needed

Quality Control

YTJM stainless steel seamless pipes undergo rigorous quality control at every stage:

QC Stage	Inspection Details
Raw Material Inspection	Spectrochemical analysis verifies chemical composition of all incoming steel rounds; material certificates reviewed
In-Process Inspection	Real-time monitoring of temperature, pressure, and dimensions during hot rolling/cold drawing
Heat Treatment Control	Precise control of solution annealing parameters to optimize microstructure and corrosion resistance
Mechanical Testing	Tensile strength, yield strength, elongation, and hardness testing per ASTM A370
Non-Destructive Testing	100% ultrasonic testing or eddy current testing for internal defects
Dimensional Inspection	OD, wall thickness, straightness, and length verified with calibrated instruments
Hydrostatic Testing	Pressure testing to verify integrity per applicable standards
Final Visual Inspection	Surface quality check for scratches, pits, or other defects
Documentation	Mill test certificates and inspection reports provided with each shipment

Certifications

Company Profile

Factory

Equipment

Visit

Jiangsu Yintuo Steel Tube Co., Ltd. is a professional manufacturer integrating R&D, production, and sales of stainless steel seamless and precision tubes. 

Key Facts:

Annual Capacity: 25,000+ tons
Size Range: OD 6–325mm · WT 1–50mm
Certifications: ISO 9001/14001 · CE · PED
Equipment: 15 rolling mills 

Heat treatment · Hydrostatic & Eddy current test
Stock: 5,000 tons ready for fast delivery

Yintuo factory is equipped with

15 precision rolling mills,

4 degreasing tanks,

1 automated bright annealing furnace,

2 straighteners, 

plus hydrostatic and eddy current testers. From piercing to finishing,

all processes are completed in-house – ensuring every tube meets precise specs and consistent quality.

We regularly welcome customers from the Middle East, South America, Southeast Asia, and beyond to visit our factory.

From raw material yards to rolling lines, from heat treatment furnaces to testing labs – clients can witness every step of how a stainless steel tube is made.

These visits build trust and help us better understand their project needs.

Yintuo is always open to partners from around the world.

Not sure which tube fits your project?

Send us your specs – we'll recommend the right material, size, and finish. Free technical support, no obligation.