KHN78T XH78T Э И 435 GH3030 57x3mm High Temperature Nickel Alloy Seamless Tube Pipe

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI, GOST
• Model NO.: XH78T GH3030
• Purity: 78%
• Alloy: Alloy
• Type: Nickel Pipe
• Powder: Not Powder
• Technique: Cold Drawn/Cold Roll
• Surface Treatment: Annealed Pickled, Bright Annealed
• Section Shape: Round/Hollow
• Transport Package: Bundles/Wooden Box
• Specification: XH78T GH3030
• Trademark: GH-STEEL
• Origin: China
• HS Code: 75052200
• Production Capacity: 1000ton Per Month

Product Description

This grade HN78T XH78T is manufactured with a help of open-type remelt method. This alloy is widely used in industries for manufacturing floating details that are exploited at a temperature range of 1000−1100°C (f. e. in manufacturing of flame tubes, thermocouple cases, combustion chambers etc.) International analogous grades of alloy are marked as 2.4951NiCr20Ti (Germany), GH3030 (PR China). Alloy has main types of mill-products: tube, wire, strip, sheet, rod. Due to high nickel content, it relates to a group of heat-resisting materials. Its main demerit is non-stability to environments that contain sulphur. It causes a brittle behavior. Its oxidation rate is 0,2 mm/h up to a temperature of 1100 °C.

1. Material	Steel Grade	GH3030  KhN78T  XH78T ЭИ435 Nimonic75
	Production Process	Available in cold rolled and cold drawn
	Standard	GB/T-15062  TU 14-3-520-76  ASTM B829 / ASME SB829
2. Specification of Seamless Pipe	Diameter	3mm thru 273mm
	Thickness	0.5mm-10mm
	Length	2m-12m, or customer required
3.Heat-treated Condition	Annealing, Bright Annealing
4. Application	Aerospace field: GH3030 XH78T high-temperature alloy can be used to manufacture engines, turbine blades, combustion chambers, and other high-temperature components. Chemical industry: GH3030 XH78T high-temperature alloy can be used to manufacture chemical reactors, catalyst carriers, and other high-temperature corrosive environment components. Power field: GH3030 XH78T high-temperature alloy can be used to manufacture power station boilers, heat exchangers, and other high-temperature environment components.
5. Packing	*All of our nickel alloy seamless pipes and tubes are packaged according to international standards to prevent any possible damage or loss. By default, we will use thick woven plastic bags to bundle the finished pipes together in batches. For some special pipes and tubes that are vulnerable to dirt, scratches, stress, or rough handling, we will suggest using wooden cases for protection. Please note that wooden cases may incur extra costs not only for the case itself but also for increased freight costs, especially when using air transportation. To enhance customer experience, we also provide dedicated packaging according to your specific requirements."
6. Delivery Time	1.for ready stock :7 days after receiving the deposit of T/T 2.For MTO: 35 days after receiving the  deposit of T/T
7. Trade Terms	EXW,FOB, CFR, CIF etc.
8. Payment Terms	1.30%T/T in advance, the balance against the B/L copy 2.30%T/T in advance, the balance against the L/C at sight
9. Loading Port	Ningbo/Wenzhou/Shanghai

GH3030 alloy material is Ni-Cr based solid solution strengthened deformation superalloy, the use temperature is below 800ºC. The alloy has good thermal strength, high plasticity, resistance to cold and heat fatigue and oxidation, and has good cold stamping and welding process properties. The alloy is single-phase austenite after solution treatment, and the microstructure is stable during use. It is mainly used for turbine engine combustion chamber components that work below 800 ° C, and high-temperature components that require oxidation resistance but bear small loads below 1100 ° C. The main products are cold rolled sheet, bar, ring, wire and pipe, etc. GH3030 alloy material has been used in the manufacture of aero engine combustion chamber, afterburner and casing mounting edge. GH3030 alloy material excellent welding performance, can be argon arc welding, spot welding, seam welding or brazing. If the solution temperature is low in production, the old grain boundary formed by residual carbides will be preserved.

GH3030 is a high-temperature alloy that belongs to the group of nickel-based superalloys. It is also known as Alloy 3030 or Inconel 3030. This alloy is primarily composed of nickel (approximately 55%), chromium (around 19%), and iron (approximately 18%), with smaller amounts of other elements such as cobalt, molybdenum, and aluminum.
GH3030 offers excellent high-temperature strength, oxidation resistance, and creep resistance, making it suitable for applications in extreme environments. It is particularly useful in industries such as aerospace, gas turbines, chemical processing, and nuclear reactors. The alloy retains its mechanical properties at elevated temperatures and exhibits good corrosion resistance in various corrosive media.
Some of the key properties and characteristics of GH3030 alloy include:

• High-temperature strength: GH3030 can maintain its strength and structural integrity at elevated temperatures, making it suitable for applications where heat resistance is critical.
• Oxidation resistance: The chromium content in GH3030 provides excellent resistance to oxidation, protecting the alloy from high-temperature environments.
• Creep resistance: GH3030 exhibits good resistance to creep deformation, which is the gradual deformation that occurs under constant load over time at high temperatures.
• Corrosion resistance: This alloy shows good resistance to corrosion in various corrosive environments, including acids, alkaline solutions, and saltwater.
• Good weldability: GH3030 can be easily welded using common welding techniques, allowing for the fabrication of complex structures.

Due to its favorable combination of properties, GH3030 is widely used in components such as turbine blades, combustion chambers, heat exchangers, furnace parts, and other high-temperature applications that require strength, corrosion resistance, and thermal stability.

XH78T is a high-temperature alloy that belongs to the group of nickel-based superalloys. It is also known as ЭИ435 or KHN78T.
XH78T alloy is primarily composed of nickel (approximately 70%), chromium (around 20%), and contains small amounts of other elements such as iron, titanium, aluminum, and cobalt. This combination of elements gives XH78T its unique properties, making it suitable for high-temperature applications.

Equivalent grade of GH3030

China		France	Russia	Britain	USA		Germany
GB	ISC	NF EN/NF	GOST	BS EN/BS	Commercial grade	UNS	W-Nr.
GH3030 (GH30)	H30300	ATG R NC 20T	ЭИ 435 XH78T KHN78T	HR5 DTD 703B N203 N403	Nimonic75	N06075	2.463 2.4951

 

Characteristic of GH3030 XH78T:

80ni-20cr solid solution-strengthened superalloy exhibits a straightforward chemical composition, demonstrating satisfactory thermal strength and high plasticity at temperatures below 800°C, along with excellent oxidation resistance, thermal fatigue resistance, and favorable cold stamping and welding process characteristics. After solution treatment, the alloy maintains a single-phase austenitic structure, which remains stable during practical application.
 

Metallographic structure of GH3030 XH78T :

GH3030 alloy is single-phase austenite structure with a small amount of tic and Ti (CN) between them

GH3030 XH78T Seamless Pipe Chemical Composition

Alloy Grade	C(max)	Si(max)	Mn(max)	P(max)	S(max)	Cr(max)	Ni	Al(max)	Ti	Fe(max)	Cu(max)
XH78T TU14-3-520-76	0.12	0.8	0.7	0.015	0.012	19-22	Balance	0.15	0.15-0.35	0.6	0.2
GH3030 GB/T 15062-2008	0.12	0.8	0.7	0.03	0.02	19-22	Balance	0.15	0.15-0.35	1.5	0.2

GH3030 XH78T Seamless Pipe Physical Properties

Alloy Grade	Density	Melting point
GH3030 / XH78T	8.4 g/cm³	1374-1420ºC

GH3030 XH78T Seamless Pipe Mechanical Properties

Alloy Grade	Tensile strength ó b/MPa	Yield strength ó 0.2/MPa	Elongation δ5%
XH78T TU 14-3-520-76	588	255	35%
GH3030  GB/T15062-2008	590	-	35

GB/T 15062-2008 GH3030 Seamless Tube / Pipe Standard Dimension and Permissilbe

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance(mm)		Length Tolerance (mm)
GB/T 15062-2008	[6~10]	Normal:±0.20 High:±0.15	[0.5~1.0]	Normal:±0.12; High:±0.10	+15mm/-0mm
	(10~30]	Normal:±0.30 High:±0.20	(1.0~3.0]	Normal:+15% / -12%; High:+12% / -10%
	(30~50]	Normal:±0.40 High:±0.30	Above3.0	Normal:+12% / -10%; High:±10%
	Above 50	Normal:±0.9% High:±0.8%

TU 14-3-520-76 XH78T ЭИ435 Seamless Tube / Pipe Standard Dimension and Permissilbe

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance(mm)		Length Tolerance (mm)
TU 14-3-520-76 XH78T /ЭИ435	[6~30]	±0.45	[1.0~3.0]	±15%	+5mm/-0mm
	Above 30	±0.1.2%	Above3.0	±12.5%

GB/T 15062-2008 GH3030 / TU 14-3-520-76 XH78T Seamless Tube / Pipe Standard Dimension and Permissilbe

Standard	Outside Diameter Tolerance(mm)		Thickness Tolerance(mm)		Length Tolerance (mm)
GB/T 15062-2008 GH3030	[6~10]	Normal:±0.20 High:±0.15	[0.5~1.0]	Normal:±0.12; High:±0.10	+15mm/-0mm
	(10~30]	Normal:±0.30 High:±0.20	(1.0~3.0]	Normal:+15% / -12%; High:+12% / -10%
	(30~50]	Normal:±0.40 High:±0.30	Above3.0	Normal:+12% / -10%; High:±10%
	Above 50	Normal:±0.9% High:±0.8%
TU 14-3-520-76 XH78T	[6~30]	±0.45	[1.0~3.0]	±15%	+5mm/-0mm
	Above 30	±0.1.2%	Above3.0	±12.5%

ASTM B829 Seamless Tube / Pipe Standard Dimension and Permissilbe

Permissible Variations
Nominal Outside Diameter,	Outside		Thickness of Specified		Thickness of Specifined
in. (mm)	Diameter, in (mm)		Average Wall, %		Minimum Wall, %
	Plus	Minus	Plus	Minus	Plus	Minus
Over 0.400(10) to 5/8(16), excl	0.005(0.13)	0.005(0.13)	15	15	30	0
5/8(16) to 1 1/2(38), incl	0.075(0.19)	0.075(0.19)	10	10	22	0
Over 1 1/2(38) to 3 (76), incl	0.010(0.25)	0.010(0.25)	10	10	22	0
Over 3(76) to 4 1/2(114), incl	0.010(0.38)	0.010(0.38)	10	10	22	0
Over 4 1/2(114) to 6(152), incl	0.020(0.51)	0.020(0.51)	12.5	12.5	28	0
Over 6(162) to 6 5/8(168), incl	0.025(0.64)	0.025(0.64)	12.5	12.5	28	0
Over 6 5/8(168) to 8 5/8(219), incl	0.031(0.79)	0.031(0.79)	12.5	12.5	28	0
AOvality -The permissible variations in this table apply to individual measurements, incluluding out-of-roundness (ovality) except for the following: For pipe and tube having a nominal wall thickness of 3% or less of the nominal outside diameter, the mean outside diameter shall conform to the permissible variations of this table and individual measurements (including ovality) shall conform to the plus and minus values of the table, with the values increased by 0.5% of the nominal ouside diameter. For pipe and tube over 4 1/2 in. (114 mm) in outside diameter with a nominal wall thickness greater than 3% of the nominal ouside diameter with a nominal wall thickness greater than 3% of the nominal outside diameter, the mean outside diameter shall conform to the permissible variations of this table and individual measurements shall not exceed twice the permissible variations of the table.BEccentricity - The permissible variations in this table to individual measurements including eccentricity.

Alloy XH78T GH3030 is used in manufacturing a bar section and detail forging.They work at a temperature that does not exceed 1100 °C. Alloy is widely used in aircraft mechanical engineering, manufacture of engines. Wire of this alloy is in muchrequest when welding nickel alloys in energetic mechanical engineering or when welding metallic constructions made of carbon and stainless steel. While doing this, there must be used electrodes and all-rolled wheels. Welding is performed with a previous heating up to a temperature of 200−300°С and further annealing of seams. 

Positive Material Identification (PMI)	Guohao Steel can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.
Testing	In some cases, HT/ET/UT testing of the stainless steel pipes may be required. We can assist you with this requirement.

 
 Q1:How many countries you already exported ?
A1:Exported to more than 30 countries mainly from America, Russia, Ukraine, Vietnam, Egypt, Iran, Turkey, Mexico etc.
Q2:How can I get some samples?
A2:Small samples in store and can provide the samples for free. Catalogue is available, most patterns we have ready samples in stock. Customized samples will take about 5-7days.
Q3:Do you have any MOQ limit for stainless steel products order? 
A3: MOQ, 1pc for ready stock of stainless steel seamless pipe. MOQ :1 tons for MTO.
Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional. For mass products, ship freight is preferred.
Q5:How does your company do regarding quality control?
A5:Mill Test Certificate is supplied with shipment. If needed, a Third Party Inspection is acceptable or SGS.
Q6: Is it OK to print my logo on products??
A7: Yes. OEM and ODM are available for us.