Introduction of 20Mn23AlV non-magnetic steel

20Mn23AlV belongs to high manganese and low magnetic steel. 20Mn23AlV non-magnetic steel is used to manufacture low magnetic plates for internal structural parts of large transformers. 20Mn23AlV steel plate has extremely low magnetic permeability, good mechanical properties and easy processing properties, which can replace low magnetic austenitic stainless steel and colored alloy to be used in the manufacture of non-magnetic parts in electrical equipment such as transformers, magnetic separators and motors.

Melting analysis of chemical composition of 20Mn23AlV non-magnetic steel plate:

C	Mn	Si	S	P	Al	V
0.14-0.20	21.50-25.00	≤0.50	≤0.030	≤0.030	1.50-2.50	0.04-0.10

Mechanical properties of 20Mn23AlV steel plate:

Thickness	σS	σb	δS	Transverse cold bending B=2a
mm	MPa	MPa	%	D=2a 180°
6-16	≥255	≥530	≥30	qualified
17-30	≥235	≥510	≥30	qualified

Use of 20Mn23AlV steel plate:
20Mn23AlV non-magnetic steel is now widely used in many electrical products, such as magnetic shielding, iron core pull plates, coil clamps, bolts and other structural parts in the oil tank of large and medium-sized transformers; lifting electromagnet suction cups, magnetic separation equipment simplified, box selection and iron remover; special smelting electric furnace lining, furnace cover, electrode plywood and electronic stirring device structural parts.

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