Investment Casting Foundry | Sand Casting

Stainless Steel Castings, Grey Iron Castings, Ductile Iron Castings

CNC Precision Machining Brass Product

Short Description:

Metals: Brass and Copper Based Alloy

Manufacturing: Lost Wax Investment Casting + CNC Precision Machining

Available Heat Treatment: Annealing, Solution

Weight: 6.60 kg


CNC precision machining brass products with services of casting, machining, heat treatment, surface treatment and OEM custom engineering design from China machining supplier. We could provide 3.1 Material Certificate of the casting metal according to EN 10204 if you need. 

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CNC precision machined brass products by lost wax investment casting, heat treatment and surface treatment as per your engineering drawings and unique requirements.

CNC machining refers to the machining process proceed by Computerized Numberical Control (CNC for short). It is aided by the CNC to reach a high and steady accuracy with less labor cost. Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled material-removal process. The processes that have this common theme, controlled material removal, are today collectively known as subtractive manufacturing, in distinction from processes of controlled material addition, which are known as additive manufacturing.

Exactly what the “controlled” part of the definition implies can vary, but it almost always implies the use of machine tools (in addition to just power tools and hand tools). This is a process used to manufacture many metal machined products, but it can also be used on materials such as wood, plastic, ceramic, and composites. The CNC machining covers many different processes such as milling, turning, lathing, drilling, honing, grinding...etc.

Brass belongs to the copper-based alloy and is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is a variety of alloys composed of more than two elements, it is called special brass. Brass is a copper alloy with zinc as the main element. As the zinc content increases, the strength and plasticity of the alloy increase significantly, but the mechanical properties will decrease significantly after exceeding 47%, so the zinc content of brass is less than 47%. In addition to zinc, cast brass often contains alloying elements such as silicon, manganese, aluminum, and lead. 

brass CNC machining parts



CNC Precision Machining Capabilities
Facilities Quantity Size Range Annual Capacity General Accuracy
Vertical Machining Center (VMC) 48 sets 1500mm × 1000mm × 800mm 6000 tonn or 300000 pieces ±0.005
Horizontal Machining Center (VMC) 12 sets 1200mm × 800mm × 600mm 2000 tons or 100000 pieces ±0.005
CNC Machine 60 sets Max turning dia. φ600mm 5000 tons or 600000 pieces   
Excutive Standard of Casting Tolerance: ISO 8062 2013, ISO 2768, GOST 26645 (Russia) or GBT 6414 (China).

The machining center is developed from the CNC milling machine. The biggest difference from the CNC milling machine is that the machining center has the ability to automatically exchange machining tools. By installing tools for different purposes on the tool magazine, the machining tools on the spindle can be changed by the automatic tool changer in one clamping to realize multiple machining features.

The CNC machining center is a high-efficiency automated machine tool that is composed of mechanical equipment and a CNC system and is suitable for processing complex parts. The CNC machining center is currently one of the most widely used CNC machine tools in the world with strong comprehensive processing ability. It can complete more processing content after the workpiece is clamped at one time. The processing accuracy is high. For batch workpieces with medium processing difficulty, its efficiency is 5-10 times that of ordinary equipment, especially it can complete Many processings that cannot be completed by ordinary equipment are more suitable for single-piece processing with more complex shapes and high precision requirements or for small and medium batch production of multiple varieties. It concentrates the functions of milling, boring, drilling, tapping and cutting threads on one device, so that it has a variety of technological means.

Grade Comparison of Copper, Brass and Bronze
COPPER C10200 2.0040 OF Cu C103 C1020 CW008A Cu-OF
C11000 2.0060 E-Cu57 C101 C1100 CW004A Cu-ETP
- 2.0065 E-Cu58 - - - -
C10300 2.0070 SE Cu - - CW021A -
C12200 2.0090 SF Cu C106 C1220 CW024A Cu-DHP
C12500 - Cu-FRTP C104 - CR006A -
C70320 2.0857 - - - CW112C CuNi3Si
C14200 2.1202 SB Cu C107 - - Cu-AsP
- 2.1356 Cu Mn 3 - - - -
- 2.1522 Cu Si2 Mn - - - -
C16200   - C108 - - CuCd1
C18200   - CC101 - CW105C CuCr1
C191010   - - - CW109C CuNi1Si
C70250   - CC102 - CW111C CuNi2Si
C17200   - CB101 - CW101C CuBe2
C17300   - - - CW102C CuBe2Pb
C17510   - - - CW110C CuNi2Be
C17500   - C112 - CW104C CuCo2Be
C15000   - - - CW120C CuZr
C65100   - - - CW115C CuSi2Mn
C65500   - CS101 - CW116C CuSi3Mn1
C14500   - C109 - CW118C CuTeP
C14700   - C111 - CW114C CuSP
C18700   - - - CW113C CuPb1P
BRASS C21000 2.0220 CuZn5 CZ125 C2100 CW500L -
C22000 2.0230 CuZn10 Cz101 C2200 CW501L -
C23000 2.0240 CuZn15 CZ102 C2300 CW502L -
C24000 2.0250 CuZn20 CZ103 C2400 CW503L -
C25600 - CuZn28 - - - -
C26000 2.0265 CuZn30 CZ106 C2600 CW505L -
C26800 2.0280 CuZn33 - C2680 CW506L -
C27200 - CuZn36 - - - -
C27200 2.0321 CuZn37 CZ108 C2700 CW508L -
C27000 2.0335 CuZn36 CZ107 C2700 CW507L -
C28000 2.0360 CuZn40 CZ109 C2800 CW509L -
C33500 - CuZn37Pb0.5 - - - -
C34000 - CuZn35Pb1 CZ118 C3501 - -
C34500 2.0331 CuZn36Pb1,5 CZ119 - CW601N -
C34000 2.0331 CuZn36Pb1,5 CZ119 C3501 CW600N -
C35300 2.0371 CuZn38Pb1,5 CZ128 - - -
C36500 2.0372 CuZn39Pb0,5 CZ123 - CW610N -
C36000 2.0375 CuZn36Pb3 CZ124 C3601 CW603N -
C37700 2.0380 CuZn39Pb2 CZ 131 / (CZ128) C3771 CW612N -
C38500 2.0401 CuZn39Pb3 CZ121 C3603 CW614N -
C38000 2.0402 CuZn40Pb2 CZ122 - CW617N -
- 2.0410 CuZn44Pb2 CZ130 - - -
C68700 2.0460 CuZn20Al2 CZ110 - - -
C44300 2.0470 CuZn28Sn1 CZ111 - - -
- 2.0530 CuZn38Sn1 - - - -
- 2.0550 CuZn40Al2 - - - -
- 2.0561 CuZn40Al1 - - - -
- 2.0572 CuZn40Mn2 CZ136 - CW723R -
C61400 2.0932 CuAl8Fe3 - - CW303G -
C63000 2.0966 CuAl10Ni5Fe4 CA104 - CW307G -
BRONZE C50700 2.1010 CuSn2 - - - -
C51100 2.1016 CuSn4 PB101 C5111 CW450K -
C51000 - CuSn5 PB102 C5102 CW451K -
C51900 2.1020 CuSn6 PB103 C5191 CW452K -
C52100 2.1030 CuSn8 PB104 C5212 CW453K -
- - CuSn10 - - - -
- - CUSn11 - - - -
- - CuSn12 - - - -

Machining centers are classified into horizontal and vertical machining centers according to their spatial position during spindle machining. Classified according to process use: boring and milling machining center, compound machining center. According to the special classification of functions, there are: single workbench, double workbench and multi-workbench machining center. Machining centers with single-axis, dual-axis, three-axis, four-axis, five-axis and interchangeable headstocks, etc.

CNC machining is the kind of precision machining by CNC machines such as advanced machining centers which have top end 5 axis machining center, 4 axis double platform machining center, or CNC turning lathes which can also be developed to CNC turning center having capability of changing more than 15 cutters within one holding shift; CNC milling machine and CNC drilling and tapping centers. Precision machining of steel casting is different from machining of steel profile. Precision casting has already achieve quite exact shape of what is desired, thus it saves lots of machining compared with machining from steel profile directly. Also because of this reason, we usually have to consider machining surface and proper machining allowance before casting. Our regular procure is to work out raw casting drawing along with machining drawing to specify machining area and machining allowance on the drawing.

RMC investment casting foundry has equipped with 4 axis machining centers, 15 sets of CNC turning lathes and 3 sets of cnc milling machines, along with assistant common versatile turning, milling, tapping, drilling and grinding machines, we have the capability of machining nearly all kinds of steel castings.

Also called precision machining, the CNC machining could reach a very high accuracy in geometical tolerance and dimensional tolerance. With our CNC machines and Horizontal Machining Centers (HMC) and Vertical Machining Centers (VMC), we can almost meet all of your required tolerance grades. 

Capabilities of Investment Casting Foundry:
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg - 100 kg
• Annual Capacity: 2,000 tons
• Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
• Tolerances: On Request.

Advantages of Investment Casting Components:
- Excellent and smooth surface finish
- Tight dimensional tolerances.
- Complex and intricate shapes with design flexibility
- Capability to cast thin walls therefore a lighter casting component
- Wide selection of cast metals and alloys (ferrous and non-ferrous)
- Draft is not required in the molds design.
- Reduce the need for secondary machining.
- Low material waste.


Inches Millimeters
Dimension Tolerance Dimension Tolerance
Up to 0.500 ±.004" Up to 12.0 ± 0.10mm
0.500 to 1.000” ±.006" 12.0 to 25.0 ± 0.15mm
1.000 to 1.500” ±.008" 25.0 to 37.0 ± 0.20mm
1.500 to 2.000” ±.010" 37.0 to 50.0 ± 0.25mm
2.000  to 2.500” ±.012" 50.0 to 62.0 ± 0.30mm
2.500 to 3.500” ±.014" 62.0 to 87.0 ± 0.35mm
3.500 to 5.000” ±.017" 87.0 to 125.0 ± 0.40mm
5.000 to 7.500” ±.020" 125.0 to190.0 ± 0.50mm
7.500 to 10.000” ±.022" 190.0 to 250.0 ± 0.57mm
10.000 to 12.500” ±.025" 250.0 to 312.0 ± 0.60mm
12.500 to 15.000 ±.028" 312.0 to 375.0 ± 0.70mm
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