Magnetic Tools

A NdFeB magnet (also known as Neodymium magnet,or Neo magnet), is a type of so called ‘rare-earth’ permanent magnet. It is made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. This material is currently the strongest type of permanent magnet.

Today, NdFeB magnets are used in large quantities all over the world. The development of this material is not yet complete; the remanence and coercive field strength are being continually increased. The high energy of NdFeB magnets means that motors and sensors can be built ever smaller – and this signifies an increase in performance efficiency. The ongoing improvements enable this interesting material to be continually introduced into new areas.

Grade	Residual Indusction		Coercive Force		Intrinsic Coercive Force		Max Energy product		temp coefficient				Max working temperature
	（Br）		( HCb)		( HCj)		(BH)Max		20-60℃		20-80℃
	KGs	T	KOe	KA/m	KOe	KA/m	MGOe	KJ/m³	%/℃(Br)	%/℃(HCj)	%/℃(Br)	%/℃(HCj)	℃
N35	11.7-12.2	1.17-1.22	≥10.9	≥868	≥12	≥955	33-36	263-287	-0.12	-0.80			80
N38	12.2-12.5	1.22-1.25	≥11.3	≥899	≥12	≥955	36-39	287-310	-0.12	-0.80			80
N40	12.5-12.8	1.25-1.28	≥11.4	≥907	≥12	≥955	38-41	302-326	-0.12	-0.80			80
N42	12.8-13.2	1.28-1.32	≥11.5	≥915	≥12	≥955	40-43	318-342	-0.12	-0.80			80
N45	13.2-13.8	1.32-1.38	≥11.6	≥923	≥12	≥955	43-46	342-366	-0.12	-0.80			80
N48	13.8-14.2	1.38-1.42	≥11.7	≥929	≥12	≥955	46-49	366-390	-0.12	-0.80			80
N50	14.0-14.5	1.40-1.45	≥10.9	≥868	≥12	≥955	48-51	382-406	-0.12	-0.80			80
N52	14.3-14.8	1.43-1.48	≥10.9	≥868	≥12	≥955	50-53	398-422	-0.12	-0.80			80
N35M	11.7-12.2	1.17-1.22	≥10.9	≥868	≥14	≥1114	33-36	263-287	-0.115	-0.75			100
N38M	12.2-12.5	1.22-1.25	≥11.3	≥899	≥14	≥1114	36-39	287-310	-0.115	-0.75			100
N40M	12.5-12.8	1.25-1.28	≥11.6	≥923	≥14	≥1114	38-41	302-326	-0.115	-0.75			100
N42M	12.8-13.2	1.28-1.32	≥12.0	≥955	≥14	≥1114	40-43	318-342	-0.115	-0.75			100
N45M	13.2-13.8	1.32-1.38	≥12.5	≥995	≥14	≥1114	43-46	342-366	-0.115	-0.75			100
N48M	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥14	≥1114	46-49	366-390	-0.115	-0.75			100
N50M	14.0-14.5	1.40-1.45	≥13	≥1033	≥14	≥1114	48-51	382-406	-0.115	-0.75			100
N35H	11.7-12.2	1.17-1.22	≥10.9	≥868	≥17	≥1353	33-36	263-287	-0.113	-0.72	-0.125	-0.605	120
N38H	12.2-12.5	1.22-1.25	≥11.3	≥899	≥17	≥1353	36-39	287-310	-0.113	-0.72	-0.125	-0.605	120
N40H	12.5-12.8	1.25-1.28	≥11.6	≥923	≥17	≥1353	38-41	302-326	-0.113	-0.72	-0.125	-0.605	120

The above –mentioned data of magnetic properties and physical properties are given at room temperature.Test sample is polished dia 10 X 7 without chamfering and plating.
The max working temperature of magnet is changeable due to length-diameter ration, coating thickness and working environment factors
Note: Working temperature is tested under 20°C±2°C, the inevitable loss of magnetic force is no more than 5%.

Coating materials and method	Thickness of Coating layer	Physical properties	Environment of magnet application	Max work Temperature	PCT	SST
phosphating	0-02μm	Colorless or light gray layer	Suitable for the situation of short-term transportation and storage.	—	—	—
Passvation	0-02μm	Colorless or light gray layer	Suitable for the situation of short-term transportation and storage.	—	—	—
Zn	8-15μm	Layer color: blue and white,. Coating layer is compact, stable and homogeneous.	Blue and white Zinc:Suitable for common environment.	≤160℃	—	＞24hr
Colur ZN	10-15μm			≤160℃	—	＞24hr
Ni＋Sn	10-30μm			≤160℃	＞48hr	＞96hr
Ni	15-30μm	Homogeneous and Light yellow layer.	Nickel layers: suitable for dew atmosphere, and can be stably used for a long time	≤200℃	＞24hr	＞48hr
Double Ni( Ni+Cu+Ni)	20-30μm		Nickel, copper and nickel layers coating: It has a stronger protection ability and longer working life than double layer nickel coating	≤200℃	＞48hr	＞96hr
Electroless NI	20-30μm		Electroless Ni： it has a stronger protection ability and longer working life than double layer nickel coatingand stronger adhesion	≤200℃	＞48hr	＞96hr
Al Spraying	6-20μm	dark silver, silver white layer with certain luster.		≤200℃	＞48hr	＞288hr
IVD Al	10-30μm			≤400℃	＞48hr	＞288hr
Epoxy	10-20μm			≤200℃	＞48hr
Ni+Cu+epoxy	15-30μm			≤200℃	＞72hr
Zn+expory	15-25μm			≤200℃	＞72Hr
Zintek	10-30μm			≤200℃	＞-480-1200Hr
Zintek+epoxy	20-30μm			≤200℃	＞-1500Hr

Note:
1.Different plating has different SST Result
Salt spray test results which is plated by gringing (small size magnets ) is better than plated by hanging Up ( big size magnets)
2.Salt spray test (SST) condition: 5% NaCl, 35Oc , continuously spray a certain time , test whether there is corrosion on coating surface .
3.Pressure cooking test (PCT) condition : 2atm 95% RH(relative humidity ) , 120oC to test the coating adhesion. The products ‘s coated zinc , passivated, phosphate or epoxy are not suitable for PCT.
4.Other methods to test the coating quality : Drop test , cross cut test , hearing and spilling test , constant temperature and humidity test etc .

Grade	Residual Indusction		Coercive Force		Intrinsic Coercive Force		Max Energy product		temp coefficient				Max working temperature
	（Br）		( HCb)		( HCj)		(BH)Max		20-60℃		20-80℃
	KGs	T	KOe	KA/m	KOe	KA/m	MGOe	KJ/m³	%/℃(Br)	%/℃(HCj)	%/℃(Br)	%/℃(HCj)	℃
N35	11.7-12.2	1.17-1.22	≥10.9	≥868	≥12	≥955	33-36	263-287	-0.12	-0.80			80
N38	12.2-12.5	1.22-1.25	≥11.3	≥899	≥12	≥955	36-39	287-310	-0.12	-0.80			80
N40	12.5-12.8	1.25-1.28	≥11.4	≥907	≥12	≥955	38-41	302-326	-0.12	-0.80			80
N42	12.8-13.2	1.28-1.32	≥11.5	≥915	≥12	≥955	40-43	318-342	-0.12	-0.80			80
N45	13.2-13.8	1.32-1.38	≥11.6	≥923	≥12	≥955	43-46	342-366	-0.12	-0.80			80
N48	13.8-14.2	1.38-1.42	≥11.7	≥929	≥12	≥955	46-49	366-390	-0.12	-0.80			80
N50	14.0-14.5	1.40-1.45	≥10.9	≥868	≥12	≥955	48-51	382-406	-0.12	-0.80			80
N52	14.3-14.8	1.43-1.48	≥10.9	≥868	≥12	≥955	50-53	398-422	-0.12	-0.80			80
N35M	11.7-12.2	1.17-1.22	≥10.9	≥868	≥14	≥1114	33-36	263-287	-0.115	-0.75			100
N38M	12.2-12.5	1.22-1.25	≥11.3	≥899	≥14	≥1114	36-39	287-310	-0.115	-0.75			100
N40M	12.5-12.8	1.25-1.28	≥11.6	≥923	≥14	≥1114	38-41	302-326	-0.115	-0.75			100
N42M	12.8-13.2	1.28-1.32	≥12.0	≥955	≥14	≥1114	40-43	318-342	-0.115	-0.75			100
N45M	13.2-13.8	1.32-1.38	≥12.5	≥995	≥14	≥1114	43-46	342-366	-0.115	-0.75			100
N48M	13.8-14.2	1.38-1.42	≥12.9	≥1027	≥14	≥1114	46-49	366-390	-0.115	-0.75			100
N50M	14.0-14.5	1.40-1.45	≥13	≥1033	≥14	≥1114	48-51	382-406	-0.115	-0.75			100
N35H	11.7-12.2	1.17-1.22	≥10.9	≥868	≥17	≥1353	33-36	263-287	-0.113	-0.72	-0.125	-0.605	120
N38H	12.2-12.5	1.22-1.25	≥11.3	≥899	≥17	≥1353	36-39	287-310	-0.113	-0.72	-0.125	-0.605	120
N40H	12.5-12.8	1.25-1.28	≥11.6	≥923	≥17	≥1353	38-41	302-326	-0.113	-0.72	-0.125	-0.605	120

The above –mentioned data of magnetic properties and physical properties are given at room temperature.Test sample is polished dia 10 X 7 without chamfering and plating.
The max working temperature of magnet is changeable due to length-diameter ration, coating thickness and working environment factors
Note: Working temperature is tested under 20°C±2°C, the inevitable loss of magnetic force is no more than 5%.

Inquiry

This is my form. Please fill it out. It's awesome!

*

                                    Upload Files
                                
                                        Brose

*