Have you ever picked up a magnet and wondered which one is the strongest? N52 is the strongest magnet grade among the three. When I look at the N42 vs the N52 magnet, I see that the N52 pulls much harder than the N42 or the N45.
I always check n42 vs n52 magnet before I buy neodymium magnets. If I want a super strong magnet, I choose N52 neodymium magnets. Picking the right magnet helps me save money and keeps my project safe. 👍
Strength Comparison
| Grade | Maximum Energy Product (BHmax, MGOe) | Residual Flux Density (Br, kG) | Coercivity (HcB, kOe) | Intrinsic Coercivity (Hci, kOe) | Max Operating Temperature (°C) |
|---|---|---|---|---|---|
| N42 | 40-43 | 12.9-13.3 | ≥11.5 | ≥12.0 | 80 |
| N45 | 43-46 | 13.3-13.7 | ≥11.0 | ≥12.0 | 80 |
| N52 | 49-53 | 14.3-14.8 | ≥10.5 | ≥11.0 | 80 |
N42 vs N52 Magnet
Energy Product
N52 magnets have the highest magnetic energy product of these three.
When I look at the n42 vs the n52 magnet, I see a big difference in magnetic strength. The magnetic energy product tells me how much energy a magnet can store. I always check this number before I buy a magnet. Here is a table that shows the magnetic energy product for each grade:
| Magnet Grade | Maximum Energy Product (BHmax) in MGOe |
|---|---|
| N42 | 40-42 |
| N45 | 43-45 |
| N52 | 49.5-52 |
N52 magnets can reach up to 52 MGOe. N42 magnets only go up to 42 MGOe. This means n52 magnets are much stronger. I use n52 magnets when I need the most magnetic strength for my project. N42 magnets are good if I do not need the highest power.
Pull Force
N52 magnets pull much harder than N42 magnets.
Pull force is how hard it is to pull a magnet off a steel plate. When I compare n42 vs n52 magnet, I see n52 magnets win every time. Here is a table that helps me see the difference:
| Magnet Grade | Maximum Energy Product (MGOe) | Relative Pull Force Compared to N35 |
|---|---|---|
| N42 | 40-43 | ~120% |
| N45 | 43-46 | ~130% |
| N52 | 50-53 | ~150% |
N52 magnets have about 20% more pull force than N42 magnets. I use n52 magnets for things like motors, magnetic bearings, and places where I need the most magnetic strength. N42 magnets work for things like magnetic toys or simple closures.
💡 Tip: N52 magnets are super strong, but they can break more easily and cost more. I always check if I really need that much magnet strength before I buy.
When I look at n42 vs n52 magnet, I also think about temperature. N42 magnets can handle higher heat better than n52 magnets. If my project gets hot, I pick n42 magnets because they keep their magnetic strength better.
Strength of N45 vs N42 vs N52
Comparison to N42
N45 magnets are stronger than N42 magnets.
I see that N45 magnets have a higher magnetic energy product and more magnetic strength than N42 magnets.
N45 magnets have about 45 MGOe for magnetic energy product. N42 magnets have about 42 MGOe. When I use N45 magnets, I get more pull force and more magnet strength than N42 magnets. But N45 magnets cost more than N42 magnets. If I want a little more power but do not want to pay for n52 magnets, I pick N45.
Comparison to N52
N52 magnets are stronger than N45 magnets.
When I compare N45 to n52 magnets, I see that n52 magnets have the highest magnetic strength. N52 magnets have up to 52 MGOe for magnetic energy product. N45 magnets only go up to 45 MGOe. I use n52 magnets when I need the most power. N45 is good if I want something in the middle.
Here is a quick list to help me remember:
- N42 magnets: Good magnetic strength, best for normal jobs.
- N45 magnets: Better magnetic strength, good for when I need more power.
- N52 magnets: Best magnetic strength, perfect for high-performance jobs.
🚩 Note: N52 magnets are the strongest, but they can lose magnetic strength if they get too hot. N42 magnets are better if my project gets warm.
Magnet Grades Explained
Grading System
The grading system for neodymium magnets uses numbers and letters to show how strong and tough the magnet is. When I look at a magnet, I see grades like N42, N45, or N52. The number tells me how strong the magnet is. Higher numbers mean a stronger magnet. The letter after the number tells me how much heat the magnet can take before it gets weak.
What “N” Means
The “N” in the magnet grade means neodymium. I always look for the “N” when I buy neodymium magnets. This letter tells me what kind of magnet I have. Here is what I learned:
- “N” stands for neodymium magnets.
- The number after “N” shows the magnetic energy product. Bigger numbers mean stronger magnets.
- Sometimes, there are more letters after the number. These letters tell me about heat resistance or other special things.
Other magnets use different letters. For example, “C” is for ceramic magnets, and “SmCo” is for samarium cobalt magnets. I always pick “N” when I want neodymium magnets because they are the strongest.
Cost
N52 magnets can be cheaper per unit, but price depends on size and shape.
I always check the price before I buy a magnet. Sometimes, I think n52 magnets must cost the most because they are the strongest. But I see that price changes with size, shape, and where I buy. Here is a table that shows some prices from big suppliers:
| Magnet Grade | Supplier | Size/Shape | Price Range (USD) | Notes |
|---|---|---|---|---|
| N45 | Magnet4Less | 2 inch x 2 inch disc | $99.00 | Super strong disc |
| N42 | Magnet4Less | 3 inch x 3 inch cylinder | $425.00 – $439.00 | Very big and heavy |
| N52 | Applied Magnets | 1/2 inch cube | ~$2.83 each (bulk discounts to $2.65) | Cheapest per small size |
| N52 | Magnet4Less | Various smaller sizes | $1.29 – $3.33 | Price changes by size |
I see that n52 magnets can be the cheapest if I buy small sizes. Big n42 magnets cost a lot more. N45 is in the middle. I always check the size and shape before I buy. Sometimes, n52 magnets save me money if I only need a small magnet with high magnetic strength.
Applications
N42 Uses
I use n42 magnets for lots of things because they are strong and easy to get.
I find n42 magnets at home, at school, and even in hospitals. They work in many places. Here is a table that shows where I see n42 magnets:
| Application Sector | Common Uses |
|---|---|
| Consumer Electronics | Smartphones, headphones, hard drives, speakers |
| Automotive | Electric car motors, sensors |
| Medical Devices | MRI machines, surgical tools |
| Industrial Machinery | Robotics, motors |
| Renewable Energy Systems | Wind turbines, solar panels |
| Telecommunications | Telecom devices |
| Aerospace | Airplane parts, rockets |
| Healthcare and Medical | Imaging machines, medical tools |
| Construction and Engineering | Big machines |
| Retail and Specialty Products | Magnetic toys, magnetic closures |
🧲 Tip: I pick n42 magnets when I want a strong magnet that does not cost too much. I see them in toys, speakers, and even in my dad’s car.
N45 Uses
I use N45 magnets when I need more power than n42 magnets but not as much as n52 magnets.
N45 magnets help me with many machines and gadgets. I like using them in motors and electronics. Here are some ways I use N45 magnets:
- I put N45 magnets in motors and generators to make them stronger.
- I use them in brushless DC motors for my robot car.
- I see N45 magnets in hard drives and headphones.
- My teacher uses N45 magnets in reed switches for science class.
- I use them in magnetic separators to clean metal from food.
- I see N45 magnets in big lifting machines at the factory.
- My friend’s dad uses N45 magnets in ABS sensors for cars.
- I see them in point of sale displays at the store.
- I learn that MRI scanners use big N45 magnets for body pictures.
- I use N45 magnets in pumps that do not touch, so they last longer.
😃 Note: I choose N45 magnets when I want a magnet that is stronger than n42 magnets but easier to find than n52 magnets.
N52 Uses
I use n52 magnets when I need the most power in a small size.
N52 magnets are super strong. I see them in many cool machines and high-tech things. Here is a table that shows where I find n52 magnets:
| Industry | Specific Uses and Purposes |
|---|---|
| Automotive | Motors and generators for strong power |
| Aerospace | Satellites, rockets, airplane parts |
| Medical | MRI machines for clear pictures |
| Electronics | Speakers, headphones, hard drives |
| Microwave Communication Tech | Circulators, isolators for sending signals |
| Electrical Engineering | Actuators, motors, generators for fast movement |
| Electroacoustic Devices | Audio equipment for loud and clear sound |
| Magnetic Mechanical Eng. | Magnetic drive systems, couplings, bearings for smooth work |
| Transportation | Electric car motors, hybrid car parts |
| Magnetic Separation Tech | Separators in mining, recycling, food factories |
I use n52 magnets when I want a small magnet that can lift heavy things. I see n52 magnets in my science club’s robot, in my uncle’s electric car, and in the hospital’s MRI machine. N52 magnets help make machines smaller and stronger. I like using n52 magnets for school projects when I want to show something amazing.
⚡ Alert: N52 magnets are very strong. I always keep my fingers safe when I use n52 magnets!
Pros and Cons
N42
N42 magnets are strong and useful, but they have some problems.
I use N42 magnets a lot because they work well for many things. Here is what I like and do not like:
- Very strong for a small magnet. I can use it in many places.
- Hard to demagnetize. It keeps its power for a long time.
- Not too expensive. I can buy more for my projects.
- I find N42 magnets in electronics, motors, and even in hospitals.
- The magnet can break if I drop it. It is brittle.
- It can rust if it gets wet. I need to check for a shiny coating.
- If it gets hot (over 80°C), it loses power fast.
- I never try to cut or drill this magnet. It can catch fire and is dangerous.
🧲 Note: I always use N42 magnets with care. They are strong, but I keep them dry and cool.
N45
N45 magnets are a good middle choice for power and price.
I pick N45 magnets when I want more strength than N42, but I do not want to pay for N52. Here is a table to help me remember:
- Stronger than N42
- Good for many uses
- Not as costly as N52
- Works in motors, toys
- Still loses power if it gets too hot
- Can rust if not coated
- Can break if dropped
- Needs a coating to last
I use N45 magnets in my robot car and in science class. I always check for a coating so the magnet does not rust. I do not use it in hot places.
💡 Tip: N45 magnets are great for school projects and machines that need a bit more power.
N52
N52 magnets are the strongest, but they need extra care.
When I want the most power in a small magnet, I pick N52. Here is what I see:
- Super strong! I can use a tiny magnet to lift heavy things.
- I use it in cars, phones, and even in the hospital.
- Cheaper than some other rare magnets.
- Gets weak if it gets hot. I never use it near heat.
- Can rust if not coated. I always check for a shiny cover.
- Very strong pull. It can hurt my fingers or break if I am not careful.
⚠️ Alert: I always keep N52 magnets away from small kids and my phone. They are fun, but I use them safely!
How to Choosing the Right Magnet
Strength Needs
Before buying magnets, I first think about what I will use them for, such as holding things, moving things, or closing doors. I also consider how heavy the items are and whether their surfaces are smooth and clean. Magnets that are too weak are no good, but magnets that are too strong are difficult to handle. Different grades, sizes, shapes, and materials all affect magnetic strength. Some places that are too wet or dirty can also weaken magnets. Once I have thought about all of these factors, I can choose the right magnets.
Translated with DeepL.com (free version)
Size and Space
I pick the magnet size that fits my space and does the job. If I have a small space, I need a small magnet. If I want more power in a small space, I pick a stronger grade like N52. Here is how I decide:
| Space I Have | Magnet Size | Magnet Grade |
|---|---|---|
| Big space | Big magnet | N42 or N45 |
| Small space | Small magnet | N52 |
Sometimes, I want a small magnet but need it to be strong. Then I use a high-grade magnet. If I have lots of room, I can use a bigger magnet with lower grade. I always measure my space before I buy a magnet.
Temperature Limits
Before I choose a magnet, I always check how hot it might get. If it gets hotter than 80°C, normal magnets like N42, N45, or N52 can lose their strength. For hot places like ovens or engines, I use special magnets with extra letters, like N42SH. If I don’t check the temperature, the magnet might stop working. Knowing the heat limit helps me pick the right magnet that lasts longer and works better.
Budget
Before I buy a magnet, I always check how much money I can spend. If my budget is small, I choose a magnet that works but doesn’t cost much. If I have more money, I can buy a stronger or special magnet. I often pick neodymium magnets because they are strong and not too expensive. If I need a big magnet but want to save money, I might choose a cheaper type like ceramic. My budget helps me find the best magnet for the price.
Safety
When I use strong magnets, I always stay safe. Some magnets, like N52, are very powerful and can hurt me if I’m not careful. I wear gloves and eye protection, and I keep magnets away from phones, computers, and credit cards. I never use magnets near pacemakers or small children. I store them in a dry place and use a box to keep them apart. I don’t cut or drill magnets, and I always handle them with care. Safety is the most important thing when using magnets.
What should you keep in mind when buying magnets?
I see people make the same mistakes when picking magnets. Here are the most common ones:
- People pick N42 because it is cheaper, but then it is too weak. They wish they picked N52.
- Some only look at magnet strength. They forget about size. A big N42 can be better than a small N52.
- Many do not think about heat. N52 is strong, but it gets weak if it gets hot.
- I see people forget about N45. They only look at N42 or N52.
- Some buy the cheapest magnet. Later, they need to fix their project because the magnet is not strong enough.
⚠️ Alert: I always check strength, size, and heat before I buy. I do not just pick the cheapest one.
FAQ
Can I cut or drill a neodymium magnet?
No, I never cut or drill them.
If I try, the magnet can break or catch fire. The dust is dangerous. I always buy the right size instead. ⚠️
Which magnet grade is best for hot places?
N42 is better for heat.
N42 keeps its power better when it gets hot. N52 loses strength fast if it gets too warm. I use N42SH or N45SH for even hotter spots. 🔥
Are N52 magnets safe for kids?
No, N52 magnets are not safe for kids.
They are super strong and can hurt fingers or get swallowed. I always keep them away from children and pets. 🚫
Why do neodymium magnets rust?
They rust because water makes them weak.
Neodymium magnets need a shiny coating. If the coating breaks, water can get in and the magnet rusts. I always check for a good cover. 💧
