AL 6XNplus

HuaNickel AL 6XNplus  is a super austenitic stainless steel developed by increasing the amount of molybdenum and adding 0.2%N on the basis of 00Cr20Ni25Mo4.5Cu high molybdenum stainless steel. This steel has the characteristics of high strength and high corrosion resistance, especially the comprehensive corrosion resistance of both oxidation and reducing acids, and is also resistant to local corrosion such as pitting, crevice corrosion and stress corrosion in chloride-containing media.

AL 6XNplus Chemical composition：

	Cr	Ni	Mo	Cu	N	C	Si	Mn	P	S
Min	19	24	6	0.5	0.15	≤
Max	21	26	7	1.5	0.25	0.02	0.5	2	0.03	0.01

AL 6XNplus Physical properties：

Density/ g·m-3	Specific heat capacity(0～100℃) J·(kg·K)-1	melting point/℃	Linear expansion coefficient(25～100℃)/ 10-6·K-1	Thermal conductivity/W · (m·K)-	Magnetic permeability(20℃) /H·m-	Resistivity μΩ ·m
	500	1320～1400	15.2	11.5	1.005	0.80

AL 6XNplus Mechanical properties：

Materials	σp0.2/MPa		G1.0		db		δ/%	Impacttoughness/J·cm~2
	N/mm²	ksi	N/mm²	ksi	N/mm²	ksi
Sheet and plate strips Rods	≥295	≥43	≥340	≥49	≥650	≥94	35	150
Filament	240～340	42～49			620～830	90～120	40

AL 6XNplus Alloy properties：

The steel has a single austenite structure in the solid solution state, and when the chemical composition in the steel is properly controlled, the steel has good microthermal stability. However, if the heat processing, heat treatment and welding processes are not properly mastered, the steel will have x equal intermetallic phase precipitation at 850~950 °C, but there is no carbide and nitride.

AL 6XNplus Uses of alloys：

It is mainly used in chemical industry, pulp and paper bleaching plant, offshore oil production platform, seawater desalination, seawater condenser, make-up water heater for power plant, etc.

AL 6XNplus Process performance：

Welding process: HuaNickel AL 6XNplus  steel has good welding performance, and is welded by GTAW (TIG), GMAW (MIG/MAG), SMAW (MMA) and SAW and PAW methods common to austenitic stainless steel.

Heat treatment: The suitable heat treatment temperature of AL 6XNplus  steel is 1150~1200°C.

Relevant standards：

ASME SA-240、ASME SB-691、ASME SB-675、ASME SA-312、ASME SA-249 SB-676、ASME SB-690、ASTM  A240、ASTMA479、ASTMB 691、ASTMA 358,A 409 A813,A814 B675、ASTM  A269,A270、ASTM A249,A688 B676、ASTM B 690