NAK80 is a senior mirror plastic die steel developed by Japan Datong Special Steel.10Ni3MnCuUAL is a similar type of steel developed and produced by China's steel mills on the basis of NAK80. It was officially [TJC STEEL]incorporated into the new national standard in 2014 and named as 1Ni3MnCumoal.
Standards and Ingredients
STANDARDS GB/T 1299-2014 Japan datong
GRADE 1Ni3MnCuMoAl NAK80
C 0.10~0.20 0.05~0.18
Si ≤0.45 0.15~1.0
Mn 1.40~2.00 1.0~2.0
P ≤0.030 --
S ≤0.015[TJC STEEL] --
Ni 2.90~3.40 2.50~3.50
Al 0.70~1.20 0.50~1.50
Cu 0.80~1.20 0.70~1.50
Mo 0.20~0.50 0.10~0.40
The performance characteristics of：
(1) After solid solution and aging hardening, the hardness reaches 37~43HRC;Uniform hardness of surface and core;Die processing directly put into use, without heat treatment;Low deformation in use can ensure high[TJC STEEL] precision.
(2)The polishing performance of the mirror is very good, and satisfactory brightness can be obtained.
(3)The discharge machining performance is excellent.Machining surface hardness does not rise, easy to precision[TJC STEEL] machining;The processed surface is compact and beautiful, which can replace pear skin erosion.
(4) Excellent welding performance.The hardness of the welding place is not increased;After welding, aging treatment will not produce uneven erosion.
NAK80 is the representative steel of 40HRC grade prehard plastic die steel.It is often used in the manufacture [TJC STEEL]of mirror plastic molds with high requirements for appearance quality, and for the production of transparent plastic parts and all plastic products with mirror requirements.
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