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Alloys

Nikkeikin Aluminium Core Technology develops its own alloys by drawing fully upon the resources of the Nippon Light Metal Group.

For example, to obtain a strong aluminium alloy, it is necessary to control lattice defects in the metal structure known as "dislocations". By adjusting and optimizing factors such as alloy composition and various controls at each stage of the process, we develop the strong alloys our customers require.

We also offer other lineups such as photoluminescent, heat-resistant, wear-resistant, and free-cutting alloys.

Overview of representative alloys

Alloy type	Alloy name	Equivalent JIS⁄AA alloy	Features	Example purpose	Thermal refining	Mechanical properties
Alloy type	Alloy name	Equivalent JIS⁄AA alloy	Features	Example purpose	Thermal refining	Tensile strength MPa	0.2% yield strength MPa	Elongation %
Al-Cu-Mg series 2000 series	2014	2014	High strength	Motorcycle parts, general-purpose materials	T6	480	415	13
	2017	2017	High strength from natural aging	General-purpose materials	T4	450	305	22
	2024	2024	High strength from natural aging	Machine parts	T4	470	375	19
	2618	2618	Heat-resistant forging materials	Pistons, general parts for heat resistance	T6	425	335	14
	NKR19	2519	Superior strength in high temperatures	Heat-resistant material	T6	470	395	13
	NK21W	-	Alloy for cutting, Pb-free	For automobiles and OA equipment	T8	415	325	25
Al-Si series 4000 series	4032	4032	Wear-resistant, low thermal expansion	Pistons	T6	375	315	9
Al-Si series 4000 series	4R32	-	High strength, wear-resistant, low thermal expansion	Pneumatic parts, pistons	T6	440	380	10
Al-Mg series 5000 series	5052	5052	Good for metal forming and corrosion-resistant	General-purpose equipment	O	185	100	30
Al-Mg series 5000 series	5083	5083	Welding structures	Ships, train cars	O	315	175	19
Al-Mg-Si series 6000 series	6061	6061	Medium strength	General-purpose materials	T6	305	275	12
	6N01	6N01	Good extrudability and corrosion resistance	Train cars, structural materials	T5	270	245	12
	AQ82	6082	Medium strength, good weldability	Structural materials	T6	325	295	15
	6F61	-	Good cold forgeability	Pneumatic parts	T6	315	275	16
	6H61	6061	Medium strength, high toughness	Automobile suspension systems	T6	345	320	16
	6151	6151	Medium strength, good corrosion resistance	Automobile parts	T6	315	275	12
	HS65	-	High strength	Automobile suspension systems	T6	390	360	12
	HS60	-	High strength	Automobile parts	T6	440	410	12
	NK61	-	Alloys for cutting	ABS housing	T6	360	325	16
Al-Zn-Mg series 7000 series	7N01	7N01	Medium strength and weldability	Train cars	T6	365	295	15
	7075	7075	High strength	Machine parts	T6	570	500	10

1) Bold text indicates an alloy developed by Nippon Light Metal.
2) The given mechanical properties are only representative values, and are not guaranteed.

Technologies of Nikkeikin ACT: Basic Data on Aluminium; Manufacturing Process of Extruded Aluminium Shapes; How Aluminium Alloys Are Selected
Technologies of Nikkeikin ACT: Alloys; Coatings (Color Management); Extrusion (Difficult Shapes and Ultra-Precision); Joining (FSW); Processing (Welding); Processing (Brazing); Processing (DI Processing)
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