D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

Product Details
Customization: Available
Application: Office / Domestic Magnets
Shape: Round
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  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
  • D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
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  • Overview
  • Product Description
  • Size Information
  • Related Products
  • Technical Data
  • Packing & Shipping
  • Company Information
  • Why Choose Us
  • FAQ
Overview

Basic Info.

Model NO.
G Series
Grade
N35
Type
Permanent
Composite
Neodymium Magnet
Delivery Time
22-30 Days
Size
Shown in The Technical Data Below
Tolerance
±0.1mm
Packaging
Pallet/Air Carton/Express Packaging
Certification
ISO9001, ISO14001 & RoHS
Magnetism Direction
Axially Magnetized
Transport Package
Pallet/Air Carton/Express Packaging
Specification
D16/22/25/30mm
Trademark
SYM
Origin
Zhejiang, China
Production Capacity
200, 000 Pieces Per Month

Product Description

Product Description
 
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
Model Name
Neodymium Office Magnets / Magnetic Pushpins with Metal Shells
Dimensions
Shown in the chart below
Magnet Material
Neodymium N35 or Customized.
Tolerance
+/-0.1mm
Plating/Coating
Nickel Plating
Magnetism Direction
Axially Magnetized
Country Of Origin
China
 
Size Information
 
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
 
Model
(G Series)
D
(mm)
d
(mm)
H
(mm)
h
(mm)
Net Weight
(g)
Max A4 Paper QTY To Hold On White Board
D16
16
13.2
7.2
3.2
9
11 pieces
D22
22
18
9
3
21
13 pieces
D25
25
21
9
3
27
15 pieces
D30
30
27
9
3
43
17 pieces
 
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D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
 
Technical Data
 
Neodymium Magnets Production Process
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

Neodymium Magnets Performance Datasheet
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

Neodymium Magnets Magnetization Directions
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

Neodymium Magnets Surface Treatment
Surface Treatment Process Thickness Color SST PCT
(μm) (Hours) (Hours)
Nickel Ni 10 ~ 20 Bright Silver > 24 ~ 72 > 24 ~ 72
Ni+Cu+Ni
Black Nickel Ni+Cu+Ni 10 ~ 20 Bright Black > 48 ~ 96 > 48
Cr3+Zinc Zn 5 ~ 8 Bright Blue > 16 ~ 48 ---
Cr3+Zn Shining Color > 36 ~ 72
Sn Ni+Cu+Ni+Sn 10 ~ 25 Silver > 36 ~ 72 > 48
Au Ni+Cu+Ni+Au 10 ~ 15 Gold > 12 > 48
Ag Ni+Cu+Ni+Ag 10 ~ 15 Silver > 12 > 48
Epoxy Epoxy 10 ~ 20 Black/ Grey > 96 ---
Ni+Cu+Epoxy 15 ~ 30 > 120 ---
Zn+Epoxy 15 ~ 25 > 120 ---
Passivation --- 1 ~ 3 Dark Grey Temporary Protection ---
Phosphate --- 1 ~ 3 Dark Grey Temporary Protection ---
Remarks:
1. The SST results differ from coating. In general, Salt Spray Test result for the magnets with barrel plating (normally for small size of magnets), is better than the ones with rack plating (normally for big size of magnets).
2. Salt Spray Test (SST) condition: 5% NaCl, 35°C, continuously spray a certain time, test whether there is corrosion on plating/coating surface.
3. Pressure Cooking Test (PCT) condition: 2 atm, 95% RH (Relative Humidity), 121°C to test the plating/coating adhesion. (Zinc, Passivated/Phosphated, and Epoxy not suitable for PCT).
4. Other test methods for plating/coating: Drop Test, Cross Cut Test, Heating and Spilling Test, Constant Temperature, Humidity Test, etc. 
 
Physical Properties of Neodymium Magnets
Curie Temperature (°C)
310~380
Maximum Working Temperature (°C)
80~230
Electrical Resistivity (µ.cm)
110~170
Hardness (Hv)
560~580
Density (g/cm3)
7.4~7.8
Relative Recoil Permeability (µrec)
1.05
Saturation Field Strength (kOe/kA/m)
(30-40)/(2,400-3,200)
Temp. Coefficient of Br (T.C.α (Br)) (%/°C)
-0.12 ~ -0.10
Temp. Coefficient of Hcj (T.C.β (Hcj)) (%/°C)
-0.6
 
Packing & Shipping
 
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

-When the gross weight is below 50kgs, we recommend to send it after packed in magnetism shielded cartons by express. 
-When the gross weight is between 50-100kgs, it can be sent by express or air. 
-When the gross weight is over 100kgs, we recommend to ship it by sea. 
Remarks: We have good contract prices with FedEx, DHL, UPS and TNT. Of course you can choose freight collect with your international courier's account no. For air and sea shipping, we have an experienced logistics team to handle the delivery and our own forwarders that we have been cooperating with for many years. If you would like to ask your forwarder to deal with the delivery, it is also okay with us.
 
Company Information
 
Hangzhou Shengyuan Machinery Co., Ltd. is specialized in manufacturing permanent magnets and magnetic assemblies. Our main products include neodymium magnets, SmCo magnets, AlNiCo magnets, ferrite magnets, pot magnets, magnetic hooks, fishing magnets, magnetic lifters, magnetic rods & grates, magnetic pushpins, magnetic tool holders and magnetic chucks, etc. We have a professional R&D team with plenty expertise and a sales team with rich experience in overseas business. Furthermore, all our products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. Our company's core value is "Building A Good Reputation With Quality Products And Excellent Service". 

With the advanced management concepts and experienced team, we have exported our products to many countries and regions all over the world, especially to North America and Europe. Our products enjoy a good reputation among our customers. 

We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits. 
 
Add.: No. 66, Leda Rd., Xiaoshan Economic & Technological Development Zone, Hangzhou City, Zhejiang Province, 311200 China.
 
 
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets

D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
 
D16/22/25/30mm Nickel Plating Metal Shells Neodymium Magnetic Pushpins Thumbtacks Neodymium Office Magnets
 
Why Choose Us
 
1. Factory direct price makes our customers more competitive in the market. 
2. OEM and customization is welcome.
3. Quick response to customers.
4. Professional R&D team with extensive expertise in the area of magnets and magnetic assembies . Most of our engineers at least have 10 years experience.
5. Advanced production and inspection equipment.
6. Strict quality control system. ISO9001:2015 and RoHS
7. Experienced logistics team to deal with FOB, CIF and DDU terms.
 
 
FAQ
 
-What information should I provide in my inquiry?
1. Model No. 2. Order quantity. 3. Any special requirements for the packaging and transportation? 
 
-How soon can I expect to get your reply?
Normally you can receive our reply within 1 hour during our work time 08:00 - 18:00(UTC-8).
 
-How will you ship the samples to me?
We will use international express such as FedEx, DHL, UPS and TNT. We have a good contract price with them.
 
-What is the normal delivery time?
The normal delivery time is about 15 days.
 
-How about the payment methods?
We accept T/T, PayPal, Western Union and L/C

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