Inconel 625 Round Bar | AMS 5666 | UNS N06625 | DIN 2.4856

Inconel 625 Round Bar Supplier, ASTM B166 Round Bar Manufacturer, 2.4856 Round Bar Distributor, UNS N06625 Round Bar Stockist, Afnor Nc22Dnb4M Round Bar Exporter.

PM Industries manufactures, supplies, and stocks Inconel 625 Round Bar (UNS N06625). It's a nickel-chromium-molybdenum alloy with a niobium addition, and it's one of the most widely specified corrosion-resistant nickel alloys in production. Strength comes primarily from solid-solution hardening by molybdenum and niobium, without requiring age hardening or any special heat treatment. That simplicity in achieving high strength makes 625 unusually practical across a wide range of fabricated forms and weld overlay applications.

ASTM B166 Round Bar, Inconel 625 Round Bar, 2.4856 Round Bar, UNS N06625 Round Bar.

625 sits in a versatile position in the nickel alloy family. It's not optimized for any single environment the way C-276 is for reducing acids or 214 is for extreme oxidation. Instead, it delivers broad corrosion resistance across a wide range of media at a strength level that many competing alloys can't match without additional heat treatment. That combination of strength, corrosion resistance, and fabricability is why 625 appears across so many industries and application types.

Seawater corrosion resistance is one of 625's strongest credentials. In marine and offshore environments where chloride concentration, temperature, and biological activity combine to create severe localized corrosion conditions, 625 performs reliably where stainless steels and lower-alloy nickel grades fail. Offshore riser components, mooring systems, seawater piping, and subsea hardware regularly specify 625 for that reason.

Weldability is a genuine practical advantage. The alloy welds without requiring pre-heat or post-weld heat treatment in most service conditions, and as-welded corrosion resistance is maintained without sensitization. The niobium addition stabilizes the alloy against carbide precipitation during welding, which is critical for fabricated equipment used in corrosive service. That combination of high strength and excellent weldability is one of the core reasons 625 is used so extensively for weld overlay cladding in oil and gas equipment, where a corrosion-resistant surface layer over a carbon steel base is the practical and cost-effective solution.

Fatigue strength is above average for a corrosion-resistant nickel alloy. In applications involving pressure cycling, mechanical vibration, or dynamic loading combined with corrosive exposure, 625's fatigue performance supports longer component life than many competing grades at equivalent strength levels.

Bar is available in a range of diameters and surface finishes with full material certification to ASTM B446, AMS 5666, and applicable specifications. Contact PM Industries for stock availability, dimensions, and pricing.

Specification Inconel 625 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 625 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 625 Round Bar

Size & Dimensions of Inconel 625 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

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 N06625 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

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

Round Bar Condition

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

Round Bar Condition

Inconel 625 Annealed Round Bar	JIS Ncf 625 Shafting Round Bar
ASTM B166 Normalized Round Bar	BS Na 21 Automotive Round Bar
UNS N06625 Quenched & Tempered Round Bar	Gost Хн75Мбтю Aerospace Round Bar
2.4856 Solution Annealed Round Bar	Inconel 625 Oil & Gas Round Bar
Afnor Nc22Dnb4M Hardened Round Bar	ASTM B166 Marine Round Bar
EN Nicr22Mo9Nb Bright Round Bar	UNS N06625 Medical Grade Round Bar
JIS Ncf 625 Polished Round Bar	2.4856 Hot Rolled Round Bar
BS Na 21 Mirror Finish Round Bar	Afnor Nc22Dnb4M Cold Drawn Round Bar
Gost Хн75Мбтю Pickled & Passivated Round Bar	EN Nicr22Mo9Nb Cold Rolled Round Bar
Inconel 625 Coated / Plated Round Bar	JIS Ncf 625 Forged Round Bar
ASTM B166 Commercial Round Bar	BS Na 21 Peeled Round Bar
UNS N06625 Precision Round Bar	Gost Хн75Мбтю Turned Round Bar
2.4856 Straight Length Round Bar	Inconel 625 Ground Round Bar
Afnor Nc22Dnb4M Cut-to-Length Round Bar	ASTM B166 Centreless Ground Round Bar
EN Nicr22Mo9Nb Structural Round Bar	UNS N06625 Precision Ground Round Bar