Inconel 718 Round Bar | AMS 5662 | UNS N07718 | DIN 2.4668

UNS N07718 Round Bar Distributor, ASTM A166 Inconel 718 Round Bar Manufacturer, 2.4668 Round Bar Stockist, JIS Ncf 718 Round Bar Exporter, Inconel 718 Round Bar Supplier.

PM Industries manufactures, supplies, and stocks Inconel 718 Round Bar (UNS N07718). It's a nickel-chromium alloy strengthened primarily by niobium and molybdenum through gamma-prime and gamma-double-prime precipitation during age hardening. 718 is the most widely used nickel superalloy in the world by production volume, and that status is earned. It combines very high strength in the aged condition with better weldability than most comparable superalloys, a combination that's difficult to achieve and that keeps 718 specified across more applications and industries than any competing grade.

UNS N07718 Round Bar, Inconel 718 Round Bar, ASTM A166 Inconel 718 Round Bar, 2.4668 Round Bar.

The weld crack resistance that makes 718 practical for fabricated hardware comes from the sluggish precipitation kinetics of the gamma-double-prime strengthening phase. Unlike alloys that strengthen rapidly and become prone to strain-age cracking during post-weld heat treatment, 718 allows welding to be completed before the strengthening reaction runs significantly. That behavior is engineered into the alloy, and it's why 718 remains the default superalloy specification for welded structural and pressure-containing components in aerospace and oil and gas.

High-temperature strength retention to approximately 700°C is reliable and well characterized. Above that temperature, creep rates increase faster than in some higher-cobalt superalloys, and other grades become more appropriate for the most severe elevated-temperature creep applications. For the broad range of aerospace structural components, rotating hardware, and pressure equipment that operates below 700°C, 718 covers the requirement efficiently and with a fabrication profile no comparable alloy matches.

Fatigue performance is a critical property for rotating gas turbine components, and 718 delivers consistently. Turbine discs, compressor stages, and rotating shaft components accumulate stress cycles with every engine revolution. The alloy's fatigue strength supports the long inspection intervals that civil aviation operators require, which is one of the reasons it dominates aircraft engine hardware specifications globally.

Corrosion resistance is adequate for most oil and gas, marine, and industrial service conditions. In sour gas environments, 718 meets NACE MR0175/ISO 15156 requirements in specific heat-treated conditions, making it a practical choice for downhole tools, completion hardware, and wellhead components where both mechanical strength and sour service resistance are required simultaneously.

Bar is available in solution-annealed and aged conditions across a range of diameters and surface finishes with full material certification to ASTM B637, AMS 5662, AMS 5663, and applicable specifications including NACE MR0175. Contact PM Industries for stock availability, dimensions, and pricing.

Specification Inconel 718 Round Bar

Specification	ASTM, EN, DIN, JIS, BS, ASME, AISI
Condition	Hardened & tempered, annealed
Length	1 to 6 Meters, Custom Cut Lengths
Round Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Bright Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Hex Bars	18mm – 57mm (11/16″ to 2-3/4″) above as per the requirement.
Square Bars	18mm – 47mm (11/16″ to 1-3/4″) above as per the requirement.
Flat Bars	1/2” to 10” in thickness range of 2mm to 150mm
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Technique	Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod
Tolerance	H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate	100% Radiography Test Report
Inspection	Third Party Inspection Report, etc

Available Types

Inconel N07718 Surface finish

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

Dimensions chart of Alloy 718 Round Bar

Size & Dimensions of Inconel 718 round bar
Metric		US Bar		ASTM/ Canadian		Japanese
Bar Size	Diam. (mm)	Bar Size	Diam. (Inch)	Bar Size	Diam. (mm2)	Bar Size	Diam. (mm)
5	5	#2	0.250	10M	100	6	6
5.5	5.5	#3	0.375	15M	200	10	10
6	6	#4	0.500	20M	300	13	13
7	7	#5	0.718	25M	500	16	16
8	8	#6	0.750	30M	700	19	19
9	9	#7	0.875	35M	1000	22	22
10	10	#8	1.000	45M	1500	25	25
11	11	#9	1.125	55M	2500	29	29
12	12	#10	1.250			32	32
14	14	#11	1.375			35	35
16	16	#12	1.500			38	38
18	18	#13	1.718			41	41
20	20	#14	1.750			44	44
22	22	#15	1.875			48	48
25	25	#16	2.000			51	51
28	28	#18	2.250			57	57
32	32
36	36
40	40
44	44
50	50

Tolerances

Tolerances for Cold Drawn Inconel 718 Round Bar
Shape / Section	Size, diameter or width across flats	Permitted variation
	mm	mm
Round	≥6 ≦ 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 100	+ 0 to - 0.070 + 0 to - 0.085 + 0 to - 0.100 + 0 to - 0.120 + 0 to - 0.140
Flat (thickness)	< 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80	+ 0 to - 0.110 + 0 to - 0.130 + 0 to - 0.250 + 0 to - 0.350
Flat (width)	< 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 100 > 100 ≦ 130 > 130 ≦ 160 > 160 ≦ 320	+ 0 to - 0.110 + 0 to - 0.130 + 0 to - 0.160 + 0 to - 0.190 + 0 to - 0.220 + 0 to - 0.350 + 0 to - 1.00 + 1.00 to - 1.00
Square and hexagon	≥ 6 ≦ 18 > 18 ≦ 30 > 30 ≦ 50 > 50 ≦ 80 > 80 ≦ 105	+ 0 to - 0.090 + 0 to - 0.110 + 0 to - 0.130 + 0 to - 0.160 + 0 to - 0.250

UNS N07718 Rod Tolerances

Type	SIZES (mm)	SIZES (Inches)	ISO Tolerance
Cold Drawn and Polish	3.00 – 75.00	1/8” – 3.00”	h8-h9-h10-h11, ASTM B637
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, ASTMA-484 h11-DIN 1013
Peeled and Ground	20.00 – 50.00	3/4″ – 2.00”	h9-h10-h11, ASTM B637

ASTM B637 UNS N07718 bar Ready Shape and Form

Hollow Rod Round Rod Precision Ground Bars Rings Flat Bars Channel Bars T-Bars Round Square Blocks

Rectangle Threaded Billet Half Round Bars I/H Bars Triangle Forging Hex (A/F) Profiles Rectangular Bar Ingot

UNS N07718 Welding Rod Tolerances

Section/Shape	diameter, width or Size across flats	variation Permitted
	millimeter	millimeter
Flat (thickness)	< 18 > 30 ≦ 50 > 18 ≦ 30 > 50 ≦ 80	+ 0 to - 00.110 + 0 to - 00.250 + 0 to - 00.130 + 0 to - 00.350
Square and hexagon	> 18 ≦ 30 ≥ 6 ≦ 18 > 30 ≦ 50 > 80 ≦ 105 > 50 ≦ 80	+ 0 to - 00.110 + 0 to - 00.090 + 0 to - 00.130 + 0 to - 00.250 + 0 to - 00.160
Round	> 18 ≦ 30 ≥6 ≦ 18 > 30 ≦ 50 > 80 ≦ 100 > 50 ≦ 80	+ 0 to - 00.085 + 0 to - 00.070 + 0 to - 00.100 + 0 to - 00.140 + 0 to - 00.120
Flat (width)	< 18 > 30 ≦ 50 > 18 ≦ 30 > 50 ≦ 80 > 160 ≦ 320 > 100 ≦ 130 > 80 ≦ 100 > 130 ≦ 160	+ 0 to - 00.110 + 0 to - 00.160 + 0 to - 00.130 + 0 to - 00.190 + 1.00 to - 1.00 + 0 to - 00.350 + 0 to - 00.220 + 0 to - 1.00

Inconel 718 Round Bar Condition

H&T	Hardened and tempered.
ANN	Annealed
PH	Precipitation hardened.

Available Stock of Inconel 718 Round Bar

Inconel 718 Annealed Round Bar	Afnor Shafting Round Bar
ASTM A166 Inconel 718 Normalized Round Bar	Gost Automotive Round Bar
2.4668 Quenched & Tempered Round Bar	EN Aerospace Round Bar
UNS N07718 Solution Annealed Round Bar	Inconel 718 Oil & Gas Round Bar
JIS Ncf 718 Hardened Round Bar	ASTM A166 Inconel 718 Marine Round Bar
BS Bright Round Bar	2.4668 Medical Grade Round Bar
Afnor Polished Round Bar	UNS N07718 Hot Rolled Round Bar
Gost Mirror Finish Round Bar	JIS Ncf 718 Cold Drawn Round Bar
EN Pickled & Passivated Round Bar	BS Cold Rolled Round Bar
Inconel 718 Coated / Plated Round Bar	Afnor Forged Round Bar
ASTM A166 Inconel 718 Commercial Round Bar	Gost Peeled Round Bar
2.4668 Precision Round Bar	EN Turned Round Bar
UNS N07718 Straight Length Round Bar	Inconel 718 Ground Round Bar
JIS Ncf 718 Cut-to-Length Round Bar	ASTM A166 Inconel 718 Centreless Ground Round Bar
BS Structural Round Bar	2.4668 Precision Ground Round Bar