Alloy660

Alloy660 alloy is an alloy material with high high temperature strength and high temperature oxidation resistance. It has high yield strength and long-lasting, creep strength below 650°C, and has good processing plasticity and satisfactory welding performance. A286 is an iron-based nickel-chromium alloy with the addition of molybdenum and titanium to enhance its properties, and is also widely used in automotive engines, nuclear industry, chemical industry, energy, medical and metallurgical fields.

Alloy660Chemical composition：

	Ni	Cr	Mo	B	P	Al	Ti	C	Mn	Si	V	S	Fe
Min	24	13.5	1	0.001			1.75				0.1		Bal
Max	27	16	1.5	0.01	0.03	0.4	2.35	0.08	2	1	0.5	0.02

Alloy660Physical properties：

Density	7.94g/cm3
Melting point	1370-1430
Specific heat	419J/kg•°C

Alloy660Mechanical properties：

Standard number	variety	heat treatment	θ/℃	Tensile properties				HBS	Combined long-lasting performance
				σb/MPa	σp0.2/MPa	δ₅/%	ψ/%		σ/MPa	τ/h	τh/h
Q/3B4071	Hot rolled rods	Standard heat treatment	20	≥1035	≥690	≥18	≥30	352～277	—	—	—
			650	—	—		—	一	448	≥25	>t

Alloy660Alloy properties：

After long-term aging at 650°C, the G phase and the cellular η phase were precipitated at the grain boundary, and the η phase showed Wechsler structure after 6000 h. When the alloy composition exceeds the specifications of the technical standard or some processes are not in place, an excess of η, G and σ phases can occur, and an abnormal cellular γ phase appears.

Alloy660Uses of alloys：

Alloy660alloy has a wide range of applications in a variety of industries such as aerospace, energy, automotive, petrochemical, and offshore oil and gas industries due to its excellent high-temperature strength and corrosion resistance.

Alloy660Process performance：

Welding performance: welding process: the alloy has satisfactory welding performance, and can be welded by argon arc welding, spot welding, and seam welding.

Relevant standards：

Bars, wires and forgings-ASTM A 638、ASME SA 638、SAE AMS 5726、SAE AMS 5731、SAE AMS 5732、SAE AMS 5734、SAE AMS 5737、SAE AMS 5895、BS HR 51、BS HR 52、AECMA PrEn2171、AECMA PrEN2119、AECMA PrEN2172、AECMA PrEN2173、AECMA PrEN2174、AECMA PrEN2303，AECMA PrEN2304，AECMA PrEN2398，AECMA PrEN2399，AECMA PrEN3510

plates, sheets and belts SAE AMS 5525、SAE AMS 5858、AECMA PrEN2175、AECMA PrEN2417Tube- – SAE AMS 5731、SAE AMS 5732、SAE AMS 5734、SAE AMS 5737、SAE AMS 5895

Other products——ASTM A 453、SAE AMS 7235、BS HR 650、ASME SA 453