Name: ASTM B983 Inconel 740H N07740 Nickel Alloy Steel Seamless Tube for Boiler
Brand: Yuhong Group Co.,Ltd
SKU: UNS N07740
Price: 100000.00 USD
Availability: InStock

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ASTM B983 Inconel 740H N07740 Nickel Alloy Steel Seamless Tube for Boiler

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	UNS N07740

Payment & Shipping Terms:

Minimum Order Quantity:	500kg
Price:	Discussion
Packaging Details:	PLY-WOODEN CASE OR BUNDLE
Delivery Time:	more than 10days or asap if we have enough stock
Payment Terms:	T/T, L/C at sight
Supply Ability:	according to client requirements

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Detailed Product Description

Standard:	ASTM B983	Material Grade:	UNS N07740
O.D.:	60mm	Thickness:	7mm
Length:	6000mm To 8000mm	NDT:	EDDY CURRENT TEST, HYDROSTATIC TEST
Third Party Inspection:	BV,SGS,ASP	Surface:	Bright Polished
Highlight:	Inconel 740H seamless tube , ASTM B983 nickel alloy tube , boiler nickel alloy steel tube

ASTM B983 Inconel 740H N07740 Nickel Alloy Steel Seamless Tube for Boiler

INCONEL alloy 740H (UNS N07740) is derivation of NIMONIC alloy 263. With its higher content of chromium (24.5%),
alloy 740H offers a significant improvement is resistance to high temperature corrosion mechanisms. Alloy 740H is
age hardened by the precipitation of a second phase, gamma prime (γ’). By balancing the hardener content (niobium,
aluminum and titanium), alloy 740H exhibits good thermal stability in addition to high strength.

Physical Properties

Density	g/cm3	8.05
Density	lb/in.3	0.291
Melting Range	°F	2350 - 2484
Melting Range	°C	1288 - 1362
Electrical Resistivity	Ω-circ mil/ft	702.7
Electrical Resistivity	μ Ω -m	1.168

Mechanical Properties

Test Temperature °F (°C)	0.2% Yield Strength, Ksi (MPa)	Ultimate Tensile Strength, Ksi (MPa)	Elongation %	Reduction of Area %
Transverse Orientation
Room Temp.	105 (724)	154.6 (1066)	23.7	28.1
1292°F (700°C)	82.2 (567)	124.9 (861)	17	23.1
1337°F (725°C)	85.4 (589)	125 (862)	22.8	37.4
1382°F (750°C)	86.4 (596)	118.6 (818)	23.9	28.7
1424°F (775°C)	80.8 (557)	110.1 (759)	22.1	30.7
1472°F (800°C)	86.2 (594)	100.2 (691)	23.5	31.2
Longitudinal Orientation
Room Temp.	107.7 (742)	164.4 (1133)	24.3	39.8
1292°F (700°C)	88.2 (608)	132.3 (912)	31.9	35.7
1337°F (725°C)	87 (560)	126.3 (871)	28.4	34.4
1382°F (750°C)	83.5 (576)	118.2 (815)	22.9	24
1424°F (775°C)	81.8 (564)	111.1 (766)	27.9	37.1
1472°F (800°C)	79.3 (547)	100 (689)	31.5	40.9

INCONEL alloy 740H is quite an impressive material with its high strength, creep resistance at elevated temperatures, and resistance to coal ash corrosion! It's interesting to know that it was initially intended for A-USC boiler tubes but found applications in steam headers as well due to its remarkable properties.

The wide size range of applications, from conventional sizes for boiler tubes to much larger sizes for main steam header pipes and even seamless steam reheat piping, showcases the versatility and suitability of INCONEL alloy 740H for various high-temperature and corrosive environments within power plants.

Overall, it seems like a high-performance material that plays a crucial role in ensuring the efficiency and durability of equipment in power generation facilities.

Application