Steel Machining Parts Manufacturer in China
At HM, you can get high-quality, highly accurate, and durable CNC machined steel parts at reasonable prices! We also provide high-quality CNC machining services with the fastest turnaround times.
HM Steel Machining Parts
One of the materials that are most frequently used in CNC machining is steel. Iron is the primary component of steel. Steel can be combined with other elements (elements such as chromium, nickel, copper, and more) in different amounts to produce different types of steel. Alloying elements are added to acquire unique characteristics such as extreme temperature stability, corrosion resistance, hardness, etc. There are more than 1000 varieties of steel compositions. However, they are divided into 4 main types such as carbon steel, alloy steel, stainless steel, and tool steel.
HM offers steel parts manufactured in accordance with your requirements. We can provide milling, turning, and other machining services using our high-precision and advanced CNC machines.
Steel Parts by Materials
Machining Services We Offer
Steel Parts Properties
The machined steel parts have mechanical and physical properties such as:
- Resistant to corrosion, moisture, chemicals, acids, and various atmospheric conditions
- Excellent resistance to temperature, scaling, and oxidation in elevated temperatures and aggressive environments
- Toughness and high tensile strength
- Virtually maintenance-free and trouble‑free service life
- Highly polished surface with bright or metallic luster for aesthetic appeal
- Extreme durability and strength
- Excellent material weldability, malleability, machinability, and fabrication flexibility
- Recyclable and sustainable material that is cost-effective


Applications and Industries
We can produce steel parts for various industries and applications such as:
Mining | Machine tools |
Pharmaceutical | HVAC |
Transportation | Plumbing |
Energy generation | Food & beverage processing |
Aerospace | Industrial equipment |
Medical | Consumer products |
Automotive | Chemical processing |
Oil & gas | Military & defense |
Electronics | Construction |
Marine | House appliances |
Quality Certifications
- IATF 16949:2016 certified
- ISO 9001:2015, ISO14001, and ISO45001 certified
- PPAP compliant
- FMEA used during the manufacturing system

Your Reliable Steel Machining Parts Supplier | HM


HM offers high-quality steel parts with complex geometries, superior mechanical characteristics, high-quality finishes, and accurate tolerances. We are capable of providing a variety of CNC machining and other secondary services. Our ITAF 16949:2016 and ISO 9001:2015 certifications enable us to guarantee that we provide our customers with the highest quality, most exact, and accurate steel parts and components.
Additionally, our expert and knowledgeable team of engineers can also help you with designing and machining custom steel parts that have accuracy and precision. We can manufacture custom steel parts based on your specifications. Also, we can help you choose the steel material that suits your application and industry.
Contact us for your steel machining part needs.
Guide for Machining Steel Materials
Steel Alloys | Characteristics | Applications |
1008 | Suitable for low-stress applications and have a moderate strength | They have a matte surface finish which makes them ideal for fabricating exposed parts |
1018 | Low carbon steel that has good weldability and formability | Rivets and components that need strong welds |
1045 | High tensile strength and impact resistance | Suitable for heat treatment |
1137 | Higher carbon, direct hardening, and higher strength | Used for higher stress applications such as shafts, gears, studs, and more |
11L37 | Good machinability and strength | Can be tempered, annealed, heat treated, and quenched easily |
11L41 | Strength and more even surface hardness | Pins, bolts, shafts, axles, and more |
12L14 | Excellent machinability | Commercial products |
1215 | Good machinability | Parts that need better weldability and formability than 12L14 |
4130 | Fatigue resistance, toughness, and strength | Commercial aircraft and military parts |
4142 or 4140 | A common general-purpose alloy | Nuts, pins, shafts, nuts, bolts, gears, valve, and pump components |
41L40 | Better machining with lead additive | Bolts, couplings, tooling, and shafts |
8620 | Case hardening, heat-treatable, and has .20% Mo, .50% Cr, and .55% Ni | Gears, bushings, bolts, shafts, and pins |
52100 | Very high 1% carbon, .08% Mo, 1.4% Cr, and .25% Ni | Bearing applications |
Steels Suitable for Machining

Carbon steels are easy to machine. They are composed of about 2-3% carbon. After machining carbon steel parts, they will undergo a heat treatment to reduce weathering and corrosion. We can machine different grades of carbon steels such as:
- High: 1080
- Medium: 1040 and 1030
- Low: 1018 and 1010

Alloy steels are made by adding varying amounts of extra elements to the carbon steel. Different kinds of elements can be added such as nickel, manganese, copper, calcium, silicon, and many more. This will result in a steel that has additional physical properties not present in standard carbon steel. Alloy steels have increased corrosion resistance, strength, and hardness. Some of the alloy steel grades we can machine include:
- 4130
- 4340
- 4140

Stainless steels are steels that have up to 10 to 20% chromium added. They are highly resistant to rust and have visual appeal. The stainless steel grades we can machine are:
- 316
- 304
- 303

Tool steels are a class of alloys and carbon steels. There are six different types of tool steels such as shock-resistant, water-hardened, high-speed, air hardened, special purchase, and hot work. We can machine:
- A582
- A286
- A277
303 stainless steel is the easiest to the machine. They are the top choice for machining fasteners, gears, fittings, and other applications that need tight tolerances.
High carbon steel is hard to machine since they have high carbon content that makes them extremely strong. They are also one of the least ductile and hardest steels.