Steel Material – High Quality CNC Machining Steel Parts Manufacturer

Steel is a material of a certain shape, size and performance made of steel ingots, billets or steel through pressure processing. Most steel processing is through pressure processing, which causes plastic deformation of the processed steel (billet, ingot). According to the different processing temperature of steel, it can be divided into cold processing and hot processing.

What are the surface treatments of CNC steel ?

Surface treatment can be divided into four aspects:

1. Mechanical surface treatment: sandblasting, shot blasting, polishing, rolling, polishing, brushing, spraying, painting, oiling, etc.

2. Chemical surface treatment: blue and black, phosphating, pickling, electroless plating of various metals and alloys, TD treatment, QPQ treatment, chemical oxidation, etc.

3. Electrochemical surface treatment: anodic oxidation, electrochemical polishing, electroplating, etc.

4. Modern surface treatment: chemical vapor deposition CVD, physical vapor deposition PVD, ion implantation, ion plating, laser surface treatment, etc.

Custom cnc stainless steel parts

Surface treatment is a method of artificially forming a surface layer on the surface of a base material with mechanical, physical and chemical properties different from that of the base. The purpose of surface treatment is to meet the corrosion resistance, wear resistance, decoration or other special functional requirements of the product.

Common CNC Milling/Milled Turning/Turned Steel Material Classification

Hope can help you find a suitable steel for your design, if you have no match steel material ,please feel free to contact us get more accurate material.

A36 steel is a common low-carbon steel, and high-strength steel can be obtained by adjusting the cooling rate and chemical composition. It is easy to process, good corrosion resistance, weldability, good plasticity and toughness, excellent mechanical properties, easy construction and maintenance. It is widely used in industry, construction (stairs, doors and windows, bridges, steel structure buildings), transportation (automobile), ships and other fields.

1018 steel is a low-carbon infiltration steel, which can be processed and welded. It has high plasticity and can be easily cut, shaped and bent; the surface of 1018 steel is relatively smooth, which is very suitable for various processing procedures. 1018 steel is exposed to air during the manufacturing process with controlled cooling, so its chemical composition is completely uniform, which makes its structure and properties better than other mild steels.

4140 alloy steel is generally harder and stronger than carbon steel. It also offers high impact, fatigue and torsional strength, which makes 4140 an excellent choice for propshafts, axles and torsion bars. In terms of hardening, 4140 can be hardened by various methods such as cold working or heating and quenching.

1045 carbon steel is stronger than low carbon steel (1018 steel), and it is American standard excellent carbon steel. It is easy to process, has good hot and cold processability and mechanical properties. It can be used to manufacture machined parts and spring parts that require high wear resistance and little dynamic load and impact, such as forged gears, tie rods, rolls, shafts, friction discs, agricultural plowshares, bolts, and studs.

4130 alloy steel has high strength and toughness, and high hardenability. This steel is usually used in the quenched and tempered state. In the medium-sized machinery manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections and working under high-stress conditions, such as shafts, main shafts, and high-load control wheels, bolts, stud bolts, gears, etc.; in the chemical industry It is used to manufacture welded parts, welded structures composed of plates and pipes, and high-pressure conduits whose temperature does not exceed 250°C in a medium containing nitrogen and hydrogen; it is used to manufacture fasteners that work below 450°C in the steam turbine and boiler manufacturing industries. Flanges and flange covers subject to high pressure below 500 °C.

Zinc—Galvanized Mild steel coated with zinc to improve corrosion resistance. It has the advantages of bright color, bright surface, high strength, strong toughness, corrosion resistance, antistatic, no fading, no cracking, and no embrittlement, making it a boutique with decorative effects. Often used in highway guardrails, high-voltage towers, etc.

A514 alloy steel is a high-strength, low-alloy steel. It is a high-strength weldable steel plate that has been quenched and tempered under ASTM standards. It is mainly used in places that require high tensile strength and high yield, engineering vehicle lifting gears, and offshore platforms. The racks used are generally A514Gr.Q or A514Gr.Q modified, depending on the thickness, its hardness is between 235-290, the yield is greater than 630MPa, and the tensile strength is above 700MPa. This kind of steel plate is more difficult to process. It is weldable, heat treatable and best suited for supporting heavy loads.

4340 alloy steel is a medium-carbon, low-alloy steel with high strength, toughness, excellent hardenability and stability against overheating, but it has high sensitivity to white spots and temper brittleness. Poor weldability, high temperature preheating before welding, stress relief after welding, quenched and tempered, very useful in environments with extreme impact, high temperature and wear. It is often used in shafts with high loads of heavy machinery, turbine shafts with a diameter greater than 250mm, rotor shafts of helicopters, turbine shafts and blades of turbojet engines, high-load transmission parts, crankshaft fasteners, gears, etc.; can also be used It is suitable for rotor shafts and blades with an operating temperature exceeding 400°C; it can also be used to manufacture important parts with special performance requirements after nitriding treatment, and can be used as ultra-high-strength steel after low-temperature tempering or austempering.

12L14 and 1215 are resultant and rephosphating carbon steels, which makes them easy to machine. However, their carbon content is relatively low, so they are less strong than other cold-drawn grades of steel. 1215 free-cutting steel is an environmentally friendly material. Compared with 12L14, it does not contain lead or harmful substances to the environment. It has good machinability and is suitable for general electroplating shafts, cutting materials and general parts.

8620 steel is an alloy steel containing nickel, chromium and molybdenum. Its main components include carbon, manganese, silicon, phosphorus and sulfur. It is a highly wear-resistant and high-temperature resistant material with good strength, hardness and toughness. It has low carbon content, certain corrosion resistance and polishing performance, good weldability. , and thus are ideal candidates for soldering applications. Typical uses include manufacturing high-strength, heavy-duty components such as gears, bearings, drive shafts, brakes, etc.

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