Inconel ASTM B446 625 Nickel Based Round Bar

ASTM B446 625 Nickel Based Round Bar

Gnee Steel is a manufacturer and distributor of ASTM B446 Inconel 625 round bars that can be processed in both hot worked and annealed conditions. When forging ASTM B446 Inconel 625 bars, a low sulfur reducing furnace atmosphere should be used. Meanwhile, major hot working of ASTM B446 Inconel 625 bars should be performed between 2300 degrees Fahrenheit/1850 degrees Celsius, while light working can be performed at temperatures as low as 1600 degrees Fahrenheit. However, hot working in the 1600 degrees Fahrenheit/1200 degrees Celsius range should not be performed due to poor ductility. Due to the large amount of heat generated when machining ASME SB446 Alloy 625 bars, high speed steel, cast nonferrous metal, or carbide tools should be used. Tools should be kept sharp.
In the aerospace industry, ASME SB446 Alloy 625 Bar is used to manufacture a variety of engine and airframe components that must withstand high temperatures, such as lock wires, exhaust bushings, and turbine seals. In the electronics industry, ASME SB446 Alloy 625 Bar is used to manufacture components such as cathode ray tube brackets, thyratron grids, tube support members, and springs. ASTM B446 Nickel Alloy 625 Bar is the standard manufacturing material for nuclear reactors. It also has excellent resistance to corrosion from high purity water and shows no signs of chloride ion stress corrosion cracking in reactor water systems. For nuclear applications, ASTM B446 Nickel Alloy 625 Bar is produced to exacting specifications.

ASTM B446 UNS N06625 (Inconel 625) Round Bar Property Table

Category	Parameter	Value/Description
Basic Composition	Nickel (Ni)	≥58%
	Chromium (Cr)	20%~23%
	Molybdenum (Mo)	8%~10%
	Niobium (Nb)	3.15%~4.15%
	Iron (Fe)	≤5%
	Other Elements	C≤0.10%, Mn≤0.50%, Si≤0.50%, Al≤0.40%, Ti≤0.40%, P≤0.015%, S≤0.015%
Mechanical Properties	Tensile Strength (RT)	≥830 MPa
	Yield Strength (0.2% offset)	≥410 MPa
	Elongation (50mm gauge)	≥30%
	Hardness	HRB 90~120 (Annealed)
Physical Properties	Density	8.44 g/cm³
	Melting Point	1290~1350°C
	Thermal Conductivity (20°C)	9.8 W/m·K
	Electrical Resistivity	1.28 μΩ·m
	Magnetic Permeability	≤1.01 (Weakly Magnetic)
Dimensions	Diameter Range	5mm ~ 300mm (Standard) Custom up to 500mm
	Length	3000mm ~ 6000mm (Standard) Custom Cutting Available
	Diameter Tolerance	±0.05mm (Precision Ground) ±0.1mm (Standard Hot-Rolled)
Surface Finish	Hot-Rolled (HR)	Black surface with scale
	Cold-Drawn (CD)	Smooth surface, Ra≤1.6μm
	Precision Ground (PG)	High-grade polish, Ra≤0.8μm
Processing	Hot-Rolling Process	Hot forging/rolling (1030~1175°C)
	Cold-Drawing Process	Cold drawing + annealing (improves dimensional accuracy)
	Heat Treatment	Solution Annealing (1030~1120°C, rapid cooling)
Standards	ASTM	ASTM B446 (Nickel-Chromium-Molybdenum-Niobium Alloy Bars)
	AMS	AMS 5666 (Aerospace)
	UNS Number	N06625
Corrosion Resistance	Oxidation Resistance	Excellent (Service Temp ≤980°C)
	Acid Resistance	Resists sulfuric, hydrochloric, phosphoric, and organic acids
	Chloride Resistance	Outstanding pitting and crevice corrosion resistance
Typical Applications	Aerospace	Engine components, combustion chambers
	Marine Engineering	Seawater piping, submarine components
	Chemical Equipment	Reactors, heat exchangers, pumps and valves
	Nuclear Equipment	Nuclear fuel processing systems, steam generators

Chemical Composition of Inconel 600 Round Bars

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr
Inconel 600	0.15 max	1.00 max	0.50 max	0.015max	0.50 max	6.00 – 10.00	72.00 min	14.00 – 17.00

ASTM B446 UNS N06625 Bar Surface finish

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RT	Rough turned/peeled	P&T	Peeled and turned
SRE	Slit rolled edge	BD	Bright drawn
P	Polished	CD	Cold drawn
HRAP	Hot rolled annealed and pickled	CF	Cold finished
HF	Hot finished	CG	Centreless ground
PR	Peeled and reeled	ST	Smooth turned

Inconel 625 Round Bar Sizes

Type	SIZES (mm)	SIZES (Inches)	ISO Tolerance
Cold Drawn and Polish	3.00 - 75.00	1/8 - 3.00	h8-h9-h10-h11
Cold Drawn and Ground	10.00 - 75.00	5/6 - 2.50	h8-h9-h10-h11
Peeled and Polished	40.00 - 150.00	1.50 - 6.00	h11, h11-DIN 1013
Peeled and Ground	20.00 - 50.00	3/4 - 2.00	h9-h10-h11

GNEE Group ASTM B446 625 Round Bar Factory Environment

GNEE Group Inconel ASTM B446 625 Bar Packaging

GNEE Group ASTM B446 625 Bar Testing

What are the dimensions of Inconel 625 round bar?
0.250 in./6.35 mm - 14.000 in./355.6 mm.
Can Inconel 625 be heat treated?
Annealing temperature: 1600/1900°F
Stress relief temperature: 1100/1500°F
Solution annealing temperature: 2000/2200°F

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