Detailed explanation of Incoloy 800/800H/800HT welded pipes

Gnee Steel

Incoloy 800, 800H, and 800HT tubes are nickel-iron-chromium alloy tubes commonly used in welded piping systems, offering excellent high-temperature strength and corrosion resistance. The 800H seamless tubes and 800HT round tubes contain higher levels of carbon, titanium, and aluminum to enhance creep strength. These alloys are widely used in petrochemical, power generation, and furnace components. Their main differences lie in their compositional variations, designed to meet specific creep/rupture strength requirements. Due to stricter control over elemental composition, 800HT tubes offer the best high-temperature performance, making them suitable for extreme high-temperature applications such as nuclear reactors or reformer tubes.

Gnee Steel

What are the differences between Incoloy 800 and 316 stainless steel?

Both Incoloy 800 and 316 stainless steel are high-performance alloys, each with its own specific applications and characteristics. Incoloy 800 is best suited for high-temperature applications requiring excellent oxidation and carburization resistance, while 316 stainless steel is ideal for applications requiring high corrosion resistance and good weldability.

Incoloy 800, Incoloy 800H, and Incoloy 800HT welded tubes offer excellent corrosion resistance, especially in high-temperature environments, demonstrating significant advantages compared to similar alloys. Even under harsh conditions, the high nickel and chromium content of these alloys provides superior resistance to oxidation, carburization, and nitriding.

Compared to stainless steels such as 304 or 316, Incoloy 800, Incoloy 800H, and Incoloy 800HT welded tubes exhibit superior corrosion resistance in highly oxidizing environments containing sulfur compounds (such as sulfuric acid or sulfur-containing gases). They are less susceptible to stress corrosion cracking and pitting corrosion, making them more reliable in applications handling corrosive fluids or gases.

Specification Of Inconel 800/800H/800HT Welded Tube

Tube Standard	ASTM B515/ ASME SB515
Welded Tube Sizes	1 / 2" NB - 24" NB
Tube Outside Diameter	6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock
Tube Manufacturing Process	Welded
Inconel Tube Schedule	SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Tube Length	Single Random, Double Random, Standard & Cut length
Tube End Types	Plain Ends (PE), Threaded Ends (TE), Bevelled Ends (BW), Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends)
Delivery Condition	Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Outside Finish	2B, No.4, No.1, No.8 Mirror Finish for Inconel Tubes, Finish as per customer Requirements
Value Added Services	Cutting, Beveling, Polishing, Threading, Destructive, Non Destructive, Ultrasonic Testing

Types of Inconel 800 welded pipes

Inconel 800 Welded Tubes

Inconel 800 ERW Tube

UNS N08800 Welded Tube

1.4876 Welded Tube

Inconel 800/800H/800HT Welded Tubes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN	OR
Incoloy 800	1.4876	N08800	NCF 800	NA 15	ЭИ670	Z8NC32-21	X10NiCrAlTi32-20	XH32T
Incoloy 800H	1.4958 / 1.4876	N08810	NCF 800H	NA 15(H)	ЭИ670	Z8NC33-21	X5NiCrAlTi31-20	XH32T
Incoloy 800HT	1.4959 / 1.4876	N08811	NCF 800HT	NA 15(HT)	ЭИ670	–	X8NiCrAlTi32-21	XH32T

Inconel 800/800H/800HT Welded Tubes Price

Product	Price
Inconel 800 Welded Tube Price	$1,082.00 - $3,489.00/ Ton
ASTM B515 Inconel 800 Welded Tube Price List	$700.00 - $1,900.00/ Ton
Inconel 800 Welded Tube Price Per Kg	$4 - 23 / Kg
Inconel 1.4876 Welded Tubing Price List	US $ 12 - 45 / Pound
Inconel 800 Welded Tube Price	$698.00 - $1,480.00/ Ton
N08800 Inconel Welded Tubing Price	US $ 1000 - 3000 / Ton
Inconel N08810 Welded Tube Price	US $ 1100 - 2000 / Ton
Inconel 800 Welded Tubing Price	US $ 1400 - 12000 / Ton
Inconel 800 Welded Tubes Price Per Piece	$4.00 - $100.00/ Piece

Chemical Composition Of Inconel 800/800H/800HT Welded Tube

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr	Al	Ti
800	0.10 max	1.50 max	1.00 max	0.015 max	0.75 max	39.50 min	30.00 – 35.00	19.00 – 23.00	0.15 – 0.60	0.15 – 0.60
800H	0.05 – 0.10	1.50 max	1.00 max	0.015 max	0.75 max	39.50 min	30.00 – 35.00	19.00 – 23.00	0.15 – 0.60	0.15 – 0.60
800HT	0.06 – 0.10	1.50 max	1.00 max	0.015 max	0.75 max	39.50 min	30.00 – 35.00	19.00 – 23.00	0.15 – 0.60	0.15 – 0.60

Mechanical Properties Of Inconel 800/800H/800HT Welded Tubing

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
7.94 g/cm3	1385 °C (2525 °F)	Psi – 75,000 , MPa – 520	Psi – 30,000 , MPa – 205	30 %

Inconel 800/800H/800HT Welded Tubing Sizes in MM

		BWG	BWG	BWG	BWG	BWG	BWG	BWG	BWG
		25	22	20	18	16	14	12	10
		WT mm	WT mm	WT mm	WT mm	WT mm	WT mm	WT mm	WT mm
Outside Diameter	Outside Diameter	0.508	0.711	0.889	1.245	1.651	2.108	2.769	3.404
mm	inch		kgs/m	kgs/m	kgs/m	kgs/m	kgs/m	kgs/m	kgs/m
6.35	1/4	0.081	0.109	0.133	0.174	0.212
9.53	3/8	0.126	0.157	0.193	0.257	0.356	0.429
12.7	1/2		0.214	0.263	0.356	0.457	0.612	0.754
15.88	5/8		0.271	0.334	0.455	0.588	0.796	0.995
19.05	3/4		0.327	0.405	0.553	0.729	0.895	1.236
25.4	1		0.44	0.546	0.75	0.981	1.234	1.574	2.05
31.75	1 1/4		0.554	0.688	0.947	1.244	1.574	2.014	2.641
38.1	1 1/2		0.667	0.832	1.144	1.514	1.904	2.454	3.233
44.5	1 3/4				1.342	1.774	2.244	2.894	3.5
50.8	2				1.549	2.034	2.574	3.334	4.03
63.5	2 1/2				1.949	2.554	3.244	4.214	5.13
76.2	3				2.345	3.084	3.914	5.094	6.19
88.9	3 1/2				2.729	3.609	4.584	5.974	7.27
101.6	4					4.134	5.254	6.854	8.35
114.3	4 1/2					4.654	5.924	7.734	9.43