ASTM B444 UNS N06625 Nickel Alloy U Tube

Name: ASTM B444 UNS N06625 Nickel Alloy U Tube
Brand: YUHONG HOLDING GROUP CO.,LIMITED---ZHEJIANG YUHONGWELLSTEEL CO,. LTD
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Model No. :	ASTM B444 UNS N06625 Gr.2
Brand Name :	YUHONG GROUP
standard :	Astm
Whether alloy :	Is Alloy
Standard :	ASTM B444 / ASME SB444
Material Grade :	UNS N06625 Gr.2
Type :	Seamless
Product Name :	Nickel Alloy U Tube

9yrs

Ningbo, Zhejiang, China

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Product description

ASTM B444 UNS N06625 Nickel Alloy U Tube

The alloy 625 tubes, which are widely used for superheater or heat exchanger tube, are generally manufactured as per ASTM B444 UNS N06625. It is a typical nickel-chromium-molybdenum-columbium alloy. The cold-worked alloy 625 seamless tubes can be furnished in two grades of different heat-treated conditions: Grade 1 (annealed): it's normally employed in service temperatures up to 1100°F (593°C); Grade 2 (solution annealed) – it is normally employed in service temperatures above 1100°F (593°C) when resistance to creep and rupture is required.

Compared with nickel-chromium alloy, Inconel 625 alloy is added with molybdenum element to further improve the comprehensive corrosion resistance of the alloy. Inconel 625 also contains a certain amount of niobium. Higher strength is obtained by solid solution strengthening.

Equivalent Grades:

Grade	UNS No	Old British		Euronorm		Japanese JIS
		BS	En	No	AFNOR
Inconel 625	N06625	NA 21	NiCr22Mo9Nb	2.4856	NC22DNB4M	NCF 625

Chemical Composition:

C	Mn	Si	S	Fe	Ni	Cr
0.1 max	0.5 max	0.5 max	0.015 max	5 max	58 min	20 – 23

Mechanical Properties:

Grade	Tensile Strength min, Ksi (MPa)	Yield Strength (0.2% offset) min. Ksi (MPa)	Elongation in 50 mm, min, %
Gr.1 (annealed)	120 (827)	60 (414)	30
Gr. 2 (solution annealed)	100 (690)	40 (276)	30