Inconel UNS N06600 Pipe

ASTM B167 UNS N06600 Pipe is an austenitic alloy with nickel as the main component, belonging to the Inconel 600 series material. The alloy is widely used in chemical industry, nuclear power, aerospace and other fields due to its excellent high temperature performance, oxidation resistance and corrosion resistance.

 

ASTM B167 UNS N06600 Pipe manufacturer, supplier

As a proven stockist and exporter with over 15 years in international markets, HT PIPE provides ASTM B163 N06600 pipes, plates, round bars, and a complete range of pipe fittings, flanges, and structural steel components. Contact our team for free, detailed pricing and product catalogs-no strings attached.

 

chemical composition of Inconel 600 pipe

The chemical composition of N06600 is mainly nickel (≥72%), supplemented by chromium (14-17%) and iron (6-10%) as the main alloying elements. The chromium element gives the material corrosion resistance in an oxidizing environment, while the high nickel content makes it stable in a reducing medium and high temperature environment. Its density is about 8.47 g/cm³, the melting point is between 1370-1425°C, and the thermal expansion coefficient is 14.4 μm/m·°C in the range of 20-1000°C, showing excellent thermal stability.

 

Mechanical properties of Alloy 600 pipe

At room temperature, the typical tensile strength of N06600 pipe is 550-690 MPa, the yield strength is 240-410 MPa, and the elongation can reach more than 30%. Its mechanical properties can still maintain a high level at high temperatures, for example, the tensile strength is still more than 450 MPa at 540°C.

 

ASME SB167 UNS N06600 Pipe Specifications

Specifications	ASTM B 167, ASME SB 167
Size	4 to 219mm W. T.: 0.5 to 20mm
Welded / ERW	5.0 mm – 1219.2 mm
Pipes Sch.	Inconel 600 ASTM B167 SCH5, SCH10, SCH40, STD, SCH80, SCH160
Different Types	Seamless / ERW / EFW / Welded / Fabricated / LSAW Pipes
Forms Include	Round, Hydraulic Etc
Lengths	Single Random, Double Random & Cut Length.
End Finish	BBE, BSE, BE, BLE, BOE, TOE, BOE, POE, TBE, PBE

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Inconel 600 Pipe Equivalent

NICKEL GRADE	WERKSTOFF NR. (WNR)	EN (European)	UNS	JIS	BS	GOST	AFNOR
Inconel 600	DIN 2.4816	NiCr15Fe	N06600	NCF 600	NA 13	МНЖМц 28-2,5-1,5	NC15FE11M

 

Corrosion resistance of Inconel N06600 pipe

In terms of corrosion resistance, the alloy has strong resistance to chloride stress corrosion cracking (SCC), especially in media containing chloride ions or caustic alkali. At the same time, it can maintain stability in high-temperature hydrogen sulfide, sodium hydroxide solution and molten salt environments, and is suitable for harsh working conditions such as refinery heating pipes and alkali evaporators.

 

High-temperature oxidation resistance of N06600 alloy welded pipe

When N06600 is continuously exposed to a high temperature environment of 1093°C, a dense Cr₂O₃ oxide layer will form on the surface, effectively blocking oxygen penetration. Experimental data show that after working continuously for 1000 hours at 980°C, the oxidation weight gain is only about 0.5 mg/cm², which makes it the core material of high-temperature furnace tubes and heat treatment equipment.

cold processing of Inconel 600 welded pipe

When cold processing N06600 pipes, attention should be paid to their work hardening tendency. It is recommended to use a multi-pass annealing process (annealing temperature 870-980°C).

 

hot forming of inconel N06600 seamless pipe

The hot forming temperature should be controlled in the range of 870-1230°C, and avoid staying in the range of 649-871°C to prevent the precipitation of brittle phases.

 

welding of Inconel UNS N06600 tube

For welding, TIG (tungsten inert gas shielded welding) process is preferred, and ENiCrFe-3 (AWS A5.11 standard) is recommended as the supporting welding material. After welding, 1120°C solid solution treatment is required to eliminate residual stress, and the welding area needs to be strictly isolated from oxygen to avoid intergranular corrosion caused by the precipitation of chromium carbide.

 

Alloy 2.4816 Inconel 600 Tube Outside Diameter

NOMINAL PIPE SIZE	OD	SCH 5	SCH 10	SCH 40	SCH 80
1/2"	0.84	0.065	0.083	0.109	0.147
3/4"	1.05	0.065	0.083	0.113	0.154
1"	1.315	0.065	0.109	0.133	0.179
1-1/4"	1.66	0.065	0.109	0.14	0.191
1-1/2"	1.9	0.065	0.109	0.145	0.2
2"	2.375	0.083	0.109	0.154	0.218
2-1/2"	2.875	0.083	0.12	0.203	0.276
3"	3.5	0.083	0.12	0.216	0.3
3-1/2"	4	0.083	0.12	0.226	0.318
4"	4.5	0.083	0.12	0.237	0.337

 

Inconel 600 Alloy Pipe Schedule and Wall Thickness

NOMINAL	O.D. INCHES	10S	10	40S & STD	40	80S & E.H.	80	160
1/8	0.405	0.049	0.049	0.068	0.068	0.095	0.095
1/4	0.54	0.065	0.065	0.088	0.088	0.119	0.119
3/8	0.675	0.065	0.065	0.091	0.091	0.126	0.126
1/2	0.84	0.083	0.083	0.109	0.109	0.147	0.147	0.187
3/4	1.05	0.083	0.083	0.113	0.113	0.154	0.154	0.218
1	1.315	0.109	0.109	0.133	0.133	0.179	0.179	0.25
1 1/4	1.66	0.109	0.109	0.14	0.14	0.191	0.191	0.25
1 1/2	1.9	0.109	0.109	0.145	0.145	0.2	0.2	0.281
2	2.375	0.109	0.109	0.154	0.154	0.218	0.218	0.343
2 1/2	2.875	0.12	0.12	0.203	0.203	0.276	0.276	0.375
3	3.5	0.12	0.12	0.216	0.216	0.3	0.3	0.437
3 1/2	4	0.12	0.12	0.226	0.226	0.318	0.318
4	4.5	0.12	0.12	0.237	0.237	0.337	0.337	0.531
4 1/2	5			0.247		0.355
5	5.563	0.134	0.134	0.258	0.258	0.375	0.375	0.625
6	6.625	0.134	0.134	0.28	0.28	0.432	0.432	0.718
7	7.625			0.301		0.5
8	8.625	0.148	0.148	0.322	0.322	0.5	0.5	0.906
9	9.625			0.342		0.5
10	10.75	0.165	0.165	0.365	0.365	0.5	0.593	1.125
11	11.75			0.375		0.5
12	12.75	0.18	0.18	0.375	0.406	0.5	0.687	1.312
14	14	0.188	0.25	0.375	0.437	0.5	0.75	1.406
16	16	0.188	0.25	0.375	0.5	0.5	0.843	1.593
18	18	0.188	0.25	0.375	0.562	0.5	0.937	1.781

 

 

 

 

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