UNS NO6985

HuaNickel UNS NO6985 alloy is a special nickel-based corrosion-resistant alloy due to its excellent corrosion resistance in a variety of acidic environments. This alloy is widely used in chemical process equipment and pipelines, among other things.

UNS NO6985Chemical composition：

%	Ni	Fe	Cr	Mo	Cu	C	P	S	Mn	Si	Co	W	Nb
Min	Bal	18.0	21	6.00	1.5		≤
Max		21.0	23.5	8.00	2.5	0.015	0.040	0.030	1.00	1.00	5	1.5	0.50

UNS NO6985Physical properties：

Density  /g ·cm	Melting point/℃	Thermal conductivity/W·(m·℃)-1			Linear expansion coefficient/(10-6℃)-1			Specific heat capacity/ J·(kg·℃)-1			Resistivity/ μΩ ·cm
		25℃	100℃	200℃	1007	200℃	300℃	25℃	100℃	200℃	room temperature
8.14	1260~ 1343	10.0	11.8	13.8	14.6	14.6	14.6	453	464	478	112.37

UNS NO6985Mechanical properties：

products	σb/MPa	oo.2/MPa	δ/%
Thin and medium plates (solid solution)	621	241	45
Oil & Gas Well Pipe Fittings (Cold Worked State)	896	862	15

UNS NO6985Alloy properties：

High temperature resistance:HuaNickel UNS NO6985 alloy has excellent high temperature resistance. The material retains its physical and chemical stability in extreme high-temperature environments and is not prone to deformation or loss of performance.

Corrosion resistance: The alloy has good corrosion resistance, especially in environments containing chlorides, which makes it very suitable in industries such as chemical, oil, and gas.

Oxidation Resistance: Hastelloy G3 alloy has excellent oxidation resistance, which allows it to maintain its structural integrity at high temperatures.

UNS NO6985Uses of alloys：

This alloy is particularly suitable for equipment and components used in reductive corrosive environments such as phosphoric acid and sulfuric acid, as well as for components in FGD systems.

UNS NO6985Process performance：

Welding performance: G3 alloy has good weldability and can be welded by various methods common to welding high-nickel corrosion-resistant alloys. Solution treatment is generally not required after welding. In the case of SMAW welding, G3 electrode can be used, and in the case of GSAW welding, G3 wire can be used, and the corrosion resistance of the welded metal after welding is basically the same as that of the base metal.

Heat treatment process:HuaNickel UNS NO6985 can be heated at 1100~1150°C, and quickly cooled after heat preservation.

Relevant standards：

ASTM B 581、ASME SB-581、DIN 17752 、ASTM B 582、ASME SB-582、DIN 17750、ISO 6208 、ASTM B 619、ASME SB-619、ASTM B 775、ASME SB 775 、ASTM B 622、ASME SB-622、ASTM B 829、ASME SB 829、DIN 17751 、ASTM B 626、 ASME SB-626、ASTM B 751、ASME SB 751 、DIN 17744、ISO 9724、ASTM B 366、ASME SB 366