Steel Machining Parts
Steel is an alloy material that can be used in many fields. It usually contains iron, carbon, chromium, tungsten, manganese, and vanadium. Among them, iron accounts are the highest proportion, usually more than 97%. Besides, depending on the carbon content, steel can be divided into low-carbon, medium-carbon, and high-carbon steel. We can manufacture all three types of steel, providing you with parts such as building structures, shafts, gears, and springs.
Your One-Stop Custom Steel Machining Parts Solution
Through our diverse range of CNC machining centers, we can achieve high-precision steel machining with a tolerance of ±0.01mm for both complex and simple parts. From automotive and medical to industrial equipment areas, we are able to provide stable and reliable steel machining parts for manufacturers and suppliers in more than seven different fields.
DSR supports drawing manufacturing and can manufacture prototypes and large quantities of stainless steel parts. We have obtained ISO 9001 and TS16949 quality system certifications, and can also provide third-party inspection reports, making us a trustworthy partner of steel machining parts.Our engineers are ready to serve you. Contact us now to customize steel manufacturing parts for your project.
Popular Steel Parts We Process
DSR offers a wide variety of steel parts, and below are some of our most popular options. If you have any non-standard steel parts that require processing services, please contact us immediately.
You can choose 1045/1215 carbon steel, 304 stainless steel, and more to customize your screws. Through our CNC turning and thread processes, their accuracy can reach up to ±0.01mm, with extremely high lightness and wear resistance, and can withstand high thread torque and connection force.
The bearings we provide are usually made of carbon steel and stainless steel. Through CNC turning and grinding, they are permanently wear-resistant and precise, making them directly available on any device.
Spindle parts are typically made from alloy steel and stainless steel, giving them excellent wear resistance and reliability. DSR parts are CNC turning and grinding to achieve a maximum accuracy of ±0.005 mm, allowing them to better withstand rotational stress, bending, and torsion.
Common materials used for tie rods include alloy steel, carbon steel, and stainless steel. Through DSR’s high-precision CNC turning and surface treatments, we can ensure each tie rod is highly consistent in terms of dimensional tolerance, finish, and strength.
Whether it is alloy steel anchor pins, carbon steel anchor pins, or stainless steel anchor pins, we can provide you with high-strength, corrosion-resistant anchor pins and ensure their consistency for easy use in fastening or load-bearing applications.
Carbon steel and stainless steel are our most commonly used bushing materials, which can give high strength and corrosion resistance. We support internal porous structure manufacturing and phosphating black surface treatment, which gives the bushing better wear resistance and rust prevention performance.
Shafts always need to withstand high bending and torque moments, as well as fatigue. DSR offers a variety of materials, including alloy steel, carbon steel, and stainless steel, to meet the strength and corrosion resistance requirements. Through our CNC turning and grinding, we achieve accuracies as high as ±0.01mm, ensuring smooth operation.
From mini gears to super-large gears, DSR can manufacture gears in any size and ensure accuracy of DIN6–10 grade, and a pressure angle of 20°. This high accuracy ensures smooth meshing of gears during high-speed operation. With our anodizing and black oxidation, gears can maintain their wear and corrosion resistance in harsh environments.
Why 1000+ Clients Choose DSR Steel Machining Parts
DSR has over 10 years of experience in the production of steel machining parts. We can process various types of steel, from carbon steel to stainless steel. Whether you need structural components or connecting components, we have the most advanced machining equipment to provide you with one-stop machining services.
We support machining carbon steel, alloy steel, and stainless steel, covering over 20 commonly used grades across the industry to different strength and corrosion resistance requirements.
Through our multi-axis CNC machining centers, we provide you with tolerances up to ±0.005mm steel parts, ensuring reliable assembly and consistent performance.
We provide critical steel parts machining services to suppliers in 7+ fields ranging from medical to
DSR has ISO 9001 and TS16949 quality certifications, ensuring the reliability and consistency of your custom-machined parts. We also provide third-party testing reports upon request.
The Complex Steel Parts We Can Machining
We can machine complex surfaces, deep holes and non-standard steel parts, such as gears, long shafts, tie rods, large bushings, and more. With our multi-axis machining center, we can achieve multi-angle and multi-faceted machining in a single time, greatly improving production efficiency.
Since our CNC machines are manually pre-programmed, the manufacturing process is not affected by human factors. As a result, the precision of steel parts is typically ±0.01 mm, ensuring consistency even across large quantities, whether miniature gears or custom-shaped bushings. By combining polishing or CNC grinding, DSR can achieve the precision of steel components enhanced to ±0.005 mm, meeting the stringent precision requirements of industries such as medical and aerospace.
Customize durable steel parts for your project
DSR understands that steel parts are typically used in high-torque and impact environments, requiring exceptional durability and impact resistance.
By machining high-strength steels like alloy, carbon, and stainless steel, we deliver parts that maintain reliability even under continuous torque, heavy impact, and harsh operating conditions.
We also offer various surface treatment options, such as anodizing and powder coating. These treatments enhance the corrosion and wear resistance of your custom steel parts, resulting in steel machining parts with a longer lifespan.
CNC Steel Parts DSR have Been Machined Recently
The bevel gear is made of 304 stainless steel and is manufactured by our 5-axis machining center with precision milling processes, achieving tolerances of ±0.01mm.
Through our turning process, the shaft has an accuracy of ±0.01mm. They are made of 304 stainless steel, with individual size of 10*1*1cm.
The spline shaft is made of C45 4140 alloy steel and through our 100% quality control inspection process, with a maximum tolerance of ±0.005 mm.
“We ordered a batch of long shafts from DSR for equipment assembly. Due to the suddenness of the order, we only had basic parameters, but fortunately, their engineers remained in close contact with us, and we ultimately received the parts ahead of schedule. They were highly accurate and fit perfectly into the equipment.”
There are many steels can be used for machining parts, and they can be divided into 3 categories in different classification methods.
1. Classified by Carbon Content
Based on carbon content, steels are generally divided into three groups: low, medium, and high-carbon steel.
1.1 Low-Carbon Steel(Mild Steel）
Low-Carbon Steels also know as Mild carbon steels is a type of soft steel with lower hardness compared to other types of steel, but it offers excellent ductility, making it easy to bend and form. Their carbon content is <0.3%, also one of the most commonly used steels include 1018 and Q235, and primarily used for workpieces such as threads and bolts, as well as tableware and cookware. When your requires excellent weldability and high cost-effectiveness, mild steel is the ideal choice.
1.2 Medium Carbon Steel
Medium carbon steel has a higher carbon content (0.3%~0.6%)and manganese content. It is strong and tough, can withstand high loads, impact, and wear, and becomes even stronger after heat treatment. Their common grades include 1045, 4140, and 4340. Typically used in various parts that require frequent operation, such as gears and shafts.
1.3 High Carbon Steel
High carbon steel has >0.6% carbon content, making it is one of the hardest steels. However, it is brittle and needs surface treatment to prevent carking, and improved hardness and wear resistance, common grades are 1060, 1070, and 1059.
2.2 Classification Based On Contained Elements
Combining other metallic elements, steel can achieve higher corrosion resistance, strength, and tensile capacity. Based on element content, it can be divided into alloy steel and stainless steel.
2.1 Alloy Steel
In addition to carbon steel, alloy steel contains various elements such as chromium (Cr), molybdenum (Mo), vanadium (V), and nickel (Ni). These elements typically account for 8% of the total composition, giving alloy steel extremely high strength. Additionally, sulfur and phosphorus are added to enhance impact resistance, or a small amount of vanadium is added to strengthen the material and improve grain structure.
2.2 Stainless Steel
Stainless steel boasts excellent corrosion resistance, thanks to its chromium content of at least 10.5%. This chromium forms an extremely thin and durable passivation film on the surface, effectively isolating it from oxygen and moisture, thus achieving its “rustproof” appearance.
Furthermore, it is hygienic, non-toxic, easy to clean and disinfect, and aesthetically pleasing, making it the material of choice for industries with stringent cleanliness and corrosion resistance requirements, such as medical surgical instruments, food processing equipment, pharmaceutical machinery, and chemical containers.
3.Austenitic/Ferritic/Martensitic/Duplex Steel
This classification is mainly used for stainless steel, classified according to metallurgy.
3.1 Austenitic Steel
Austenitic steel has a face-centered cubic crystal structure, contains at least 16% chromium and 10.5% nickel, making it has extremely strong corrosion resistance and extremely high yield strength and tensile strength. The most common grades are 304/316 stainless steel, which is often used in springs, blades, injection needles, and more.
3.2 Ferritic
Ferritic stainless steel contains 10.5% to 30% chromium, a high iron content, and less than 0.1% carbon. This material cannot be heat treated and can only be processed by cold rolling. Common grades include 409, 430, and 446. It is primarily used in automotive interiors and decorative architectural wall panels.
3.3 Martensite
This type of stainless steel possesses strong magnetism and good electrical conductivity. Its chromium content is typically between 11.5% and 18%, similar to ferrite, but its carbon content is approximately 1.2%. Due to its low nickel content, making it less corrosive than other stainless steels, common stainless steels include 431, 440A, and 416, and are generally used in shafts, bushings, valves, and other applications.
3.4 Duplex Steel
Duplex steel is typically combination 50% austenite and 50% ferrite. They can providing exceptional strength, corrosion resistance, and toughness, making duplex steel machining parts can widely used in the shipbuilding industry, including components such as rudders, shafts, and pumps.
Like all metal machining parts, steel parts are typically machined by CNC milling, turning, drilling, and grinding.
CNC Milling
If you need complex steel parts like gears and brackets, their high rigidity leads to high cutting forces, making them difficult to form using conventional equipment. We use multi-axis machining centers to complete multi-angle machining in a single setup, ensuring structural integrity and high efficiency.
CNC Turning
Since Steel has high hardness and toughness, DSR uses the multi-axis machining centers to manufacture long shafts, bushings, and threaded parts with high concentricity and dimensional tolerance of ±0.01mm.CNC Drilling
Almost all steel machining parts require drilling. DSR ensures hole position accuracy and thread durability through high-rigidity tools and coolant control, making it suitable for mounting holes, locating holes, connecting holes, etc.
CNC Grinding
Grinding is a post-processing step used to improve the surface and dimensional accuracy of steel workpieces. Due to the high hardness of steel, grinding is the most critical process for enhancing its wear resistance.DSR has multiple multi-axis CNC machining equipment and machining centers, gantry machining centers, grinding equipment, etc. to meet your different processing needs.
We can usually provide anodizing, black oxidation, phosphating, electroplating, spraying, surface hardening, and galvanizing for your steel machining parts. Among these, anodizing and black oxidation are the most popular choices among our customers.
