- No. 51 Fuyang Road, Dalang Town, Dongguan City, Guangdong Province
- info@tongyimetal.com
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| Alloy Designation | Main Component（%） | ||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Pb | N | |
| 416 | ≤0.15 | ≤1.0 | ≤1.25 | ≤0.060 | ≥0.015 | ≤0.60 | 12.00~14.00 | ≤0.60 | – | – | – |
| 420 | 0.18~0.23 | 0.15~0.35 | 0.60~0.90 | ≤0.03 | ≤0.03 | ≤0.25 | 0.90~1.20 | 0.15~0.25 | |||
| 420J2 | 0.26~0.40 | ≤1.0 | ≤1.0 | ≤0.040 | ≤0.030 | ≤0.60 | 12.00~14.00 | – | – | – | |
| 420F | 0.26~0.40 | ≤1.0 | ≤1.25 | ≤0.060 | ≤0.15 | ≤0.60 | 12.00~14.00 | ≤0.60 | – | – | – |
| 430 | ≤0.15 | ≤0.75 | ≤1.00 | ≤0.040 | ≤0.030 | ≤0.60 | 16.00~18.00 | – | – | – | |
| 430F | ≤0.12 | ≤1.0 | ≤1.25 | ≤0.060 | ≥0.15 | ≤0.60 | 16.00~18.00 | ≤0.60 | – | – | – |
| 440C | 0.95~1.20 | ≤1.0 | ≤1.25 | ≤0.030 | ≤0.030 | ≤0.60 | 16.00~18.00 | ≤0.75 | – | – | – |
| 416FC | ≤0.15 | ≤1.0 | ≤1.25 | ≤0.060 | >0.15 | – | 12.4 | – | – | – | – |
| 415 | 0.13~0.18 | 0.15~0.35 | 0.60~0.90 | ≤0.03 | ≤0.03 | ≤0.25 | 0.90~1.20 | 0.15~0.25 | |||
| 435 | 0.33~0.38 | 0.15~0.35 | 0.60~0.90 | ≤0.03 | ≤0.03 | ≤0.25 | 0.90~1.20 | 0.15~0.30 | |||
| 440 | 0.38~0.43 | 0.15~0.35 | 0.60~0.90 | ≤0.03 | ≤0.03 | ≤0.25 | 0.90~1.20 | 0.15~0.30 | |||
420J2 stainless steel round bars are martensitic stainless steel known for their good polishability, moderate corrosion resistance, and decent hardness after heat treatment. This steel is commonly used in the production of knife blades, surgical instruments, and scissors due to its ability to achieve a fine finish and retain sharp edges. With good formability and machinability, 420J2 is an economical option for applications that require both aesthetic appeal and functional durability, particularly in environments where moderate strength and corrosion resistance are sufficient.
420J2 stainless steel round bars are a versatile martensitic steel, offering a balance of moderate corrosion resistance, good hardness, and excellent polishability. This steel grade is often chosen for the manufacture of consumer products like knife blades, surgical instruments, and scissors due to its ability to achieve a sharp edge and a smooth, high-quality finish. 420J2 can be heat-treated to improve its hardness, making it suitable for applications requiring moderate strength and wear resistance. While it does not offer the highest corrosion resistance among stainless steels, 420J2 performs well in environments with low to moderate corrosive exposure. Its easy formability and machinability, combined with its attractive finish, make it a popular choice for both functional and aesthetic purposes.
Our company’s products are suitable for various fields such as digital products, electrical appliances, medical, office equipment, power clocks, electromechanical, robotics, automotive, electronics, etc. We strive to create high-quality products in the industry.
Guangdong tongyi metal technology co., ltd. Is a leading brand specializing in the production of precision special steel. We offer a wide range of standard products and excel in providing custom steel grades, shape customization, and bulk orders to meet the stringent requirements of precision hardware parts processing. driving technological innovation and delivering high-quality metal materials and solutions to our clients.
We have 168 imported high-precision equipment and more than 30 core technicians.
Up to 30000 tons of metal materials can be produced annually
We collaborate with over 10000 strategic partners globally
The company has more than 100 production equipment imported from japan and 38 core technicians. Strictly implement iso9001 management system in the production process, import high-precision testing equipment can provide accurate data support to win customer trust and support with high quality and fast delivery.
The same metal has 68 sets of measuring equipment imported from Japan, such as Mitoyo micrometer, straightness test, hardness tester, spectrometer, magnetic detector, etc. The outer diameter accuracy of the material is measured once every 5 minutes, and the quality is all qualified before packaging and shipping.
The same metal has 15 years of stainless steel rod/wire material research and development, design, production experience, foreign large strength manufacturers. Customized matching material solutions according to customer needs in various industries.
offers clear and concise answers to the most frequently asked questions about our stainless steel bars, ensuring you get the information you need quickly and efficiently.
We offer a variety of stainless steel, titanium alloy, quenched and tempered steel bars and wires, including 303, 304, 316, 410, and more. We can also customize the composition according to your requirements.
Yes, we can customize the length of stainless steel bars according to the specific requirements of our customers, reducing material waste and lowering costs.
Our stainless steel bars are widely used in various industries, including construction, automotive, medical devices, food processing, and aerospace.
We offer a variety of surface treatment options, including polishing, brushing, pickling, and mirror finishing, to meet different application needs.
We adhere to the ISO9001 quality management system, conducting strict quality control at every stage from raw material procurement to the production process, and we also offer third-party inspection services.
Materials, appearance, dimensions, straightness, smoothness, etc. can be customized according to needs
Materials, appearance, dimensions, straightness, smoothness, etc. can be customized according to needs
