Stainless steel

Stainless steel, with its high hardness and excellent wear resistance, is particularly suitable for the manufacture of precision stainless steel parts, such as automotive, medical, and aerospace parts. Additionally, its outstanding corrosion resistance and oxidation resistance make it an ideal material for long-lasting components.
The material grades can be referenced from international standards such as European standards (EN), American standards (ASTM), and Japanese standards (JIS). These standards define stainless steel based on specific chemical compositions and performance requirements, making it widely used across various industries.Due to the following material characteristics, CTT provides custom stainless steel parts processing services based on customer needs and application scenarios.
- High Hardness
- Heat Resistance
- Corrosion Resistance
- High Cutting Forces and Cutting Vibrations
- Machined surface is prone to cutting marks and rust.
Furthermore, CTT offers one-stop services, specializing in stainless steel parts processing and providing various surface treatment solutions to meet all of the customer’s processing requirements in one place.
Stainless steel is widely used across various industries, and these applications demonstrate the versatility and importance .
Common stainless steel grades shown below at standards in Europe (EN), the United States (ASTM), and Japan (JIS):
- Austenitic SS
- EN 1.4301 (X5CrNi18-10) / ASTM A240 Type 304 / JIS SUS304
- EN 1.4404 (X2CrNiMo17-12-2) / ASTM A240 Type 316L / JIS SUS316L
- Ferritic SS
- EN 1.4016 (X6Cr17) / ASTM A240 Type 430 / JIS SUS430
- Martensitic SS
- EN 1.4021 (X20Cr13) / ASTM A276 Type 420 / JIS SUS420J1
- Duplex SS
- EN 1.4462 (X2CrNiMoN22-5-3) / ASTM A240 Type 2205 / JIS SUS329J3L
5.High-temperature SS
- EN 1.4845 (X8CrNi25-21) / ASTM A240 Type 310S / JIS SUS310S
6.17-4 PH SS(630)
7.Precipitation Hardening SS
- EN 1.4542 (X5CrNiCuNb16-4) / ASTM A693 Type 630 / JIS SUS630
8.High-carbon SS
- EN 1.4034 (X46Cr13) / ASTM A276 Type 420 / JIS SUS420J2
9.High-hardness SS
- EN 1.4125 (X105CrMo17) / ASTM A276 Type 440C / JIS SUS440C
10.Super Austenitic SS
- EN 1.4547 (X1CrNiMoCuN20-18-7) / ASTM A182 F44 / JIS S31254
These grades are defined not only according to different international standards but also selected and applied based on their specific chemical compositions and mechanical properties. They are widely used across various industries and specialized fields such as aerospace, chemical, medical, and energy, to meet diverse requirements for corrosion resistance, mechanical strength, and temperature tolerance.
The characteristics of stainless steel are not only suitable for precision machining, but also can meet the needs of large-scale production and manufacturing. The following are various process applications :
Surface treatment technology is essential to enhance the corrosion resistance, aesthetics and functionality of products. The following are common stainless steel surface treatment technologies, which can effectively improve product performance and appearance quality according to different needs and application scenarios.
- Anodizing
- Polishing
- Electroplating
- Pickling
- Sanding
- Chemical Plating
- Brushing








