Manufacturer: Nippon Yakin Kogyo Co., Ltd
Model : NAS36

NAS36

Controlled Expansion Material
NAS36 is an alloy with nickel (36%) and iron as its main components. Because it has an extremely low coefficient of thermal expansion, approximately 1/10 that of 18-8 stainless steel, it can minimize thermal stress caused by temperature changes, eliminating the need for complex shapes (such as waves or bellows) that are required by other low-temperature materials.NAS36 also shows high toughness at low temperatures and provides excellent weldability. Nippon Yakin supplies NAS36 in plate, sheet, and strip forms.

Chemical Composition	36Ni-Fe
Product shape	Coil	Sheet	Plate
Weldability	NAS36 has good weldability. Joints of thin sheet materials can be welded by TIG welding without a filler, even in seam welding.
Applications	Molds for airplane body parts, Bimetals, Trimetals, Semiconductor manufacturing equipment.

Steel Grade/Standard

Nippon Yakin Grade	JIS	ASTM	EN
NAS36	—	—	—

Chemical Composition

C	Si	Mn	Ni	Fe
≦0.05	≦0.30	≦0.80	35.0~37.0	Bal.

Physical Properties

Density	[g/cm³]	8.14
Specific heat	[J/kg·K]	-196~20°C: 385
Electrical resistivity	[µΩ·cm at 20°C]	78
Thermal conductivity	[W/m·K at 20°C]	10.5
Thermal conductivity	[W/m·K at 50°C]	5.4
Average coefficient of thermal expansion	[10⁻⁶/°C 25~100°C]	1.5±0.5
Young’s modulus	[MPa]	14.5×10⁴
Curie point	[°C]	240~260
Melting range	[°C]	1415~1465

Coefficient of Thermal Expansion:

Mechanical Properties

Annealed Condition

Example	Thickness	Mechanical Properties
		0.2% proof stress [MPa]	Tensile strength [MPa]	Elongation [%]	Hardness
Hot-rolled plate	22mm	241	430	44	115 (HBW)
Cold-rolled sheet	1.3mm	292	477	37	132 (HV)

Weldability

NAS36 has good weldability. Joints of thin sheet materials can be welded by TIG welding without a filler, even in seam welding.

Applications

Molds for airplane body parts, Bimetals, Trimetals, Semiconductor manufacturing equipment.