Brass Casting Services

We supply a full range of brass casting alloys to support sand casting and gravity casting for industrial applications.

Supported Alloys
H59 · H62 · H63 · H65 · H68 · H70
HPb59-1 · HPb63-3 · C36000 · C37700
Casting Processes
Sand Casting · Gravity Casting · Brass High-Pressure Die Casting
Thin-Wall Capability
Down to 2.5–4.0 mm depending on alloy and process (brass die casting supports thinner sections).
Mechanical Properties
Tensile strength typically 250–380 MPa (as-cast);
hardness around HB 75–120 depending on grade.
Dimensional Tolerance
As-cast accuracy around CT7–CT9 (ISO 8062-3);
tighter features achievable after CNC machining.
Surface Roughness
Typically Ra 6.3–25 μm as-cast;
Ra 1.6–3.2 μm available after machining.
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Brass flanged bearing housing casting with mounting base and central bore
Brass casting mount base with flanged support structure

Common Brass Casting Alloys

Alloy Grade Key Properties Typical Applications Example Parts
HPb59-1 (C37700) High-strength forging brass with very good hot workability, dense structure after forging or casting, and good machinability for sealing and threaded surfaces. Plumbing and HVAC valves and fittings, gas and water control components, pump and compressor parts. Forged Valve Body, Angle Valve, Pump Housing
HPb63-3 (C36000) Free-cutting brass with excellent machinability and chip breaking; ideal for high-speed turning of precision brass components. Hydraulic and pneumatic connectors, precision threaded inserts, small valve and instrument components. Threaded Insert, Hose Fitting, Valve Spool
HPb61-1 Medium-strength leaded brass with good machinability, adequate corrosion resistance, and stable dimensional accuracy after machining. Hydraulic adaptors, machined bushings, medium-pressure fluid control components. Bushing, Sleeve, Valve Plug
H62 (C28000) Medium-strength brass with balanced toughness and castability; good wear resistance and suitable for subsequent machining. Structural brass parts in plumbing, pump and valve assemblies, and light mechanical components. Valve Seat, Connector Body, Support Bracket
H59 Strong and economical structural brass, suitable for hot working and machining of robust hardware and fittings. Machinery components, plumbing hardware, flanges and brackets for general engineering. Nut, Insert, Flange Connector
H65 (C27000) Medium-strength brass with good cold and hot workability, offering reliable machinability for precision components. Mechanical fittings, watch and instrument components, small housings and connectors. Bushing, Precision Ring, Connector Shell
H68 (C26800) Good strength-to-ductility ratio and stable forming behaviour; suitable for profiles requiring both rigidity and bendability. Connector bodies, decorative and architectural hardware, general brass structural parts. Connector Clip, Nameplate, Mounting Bracket
H63 (C27200) Versatile brass grade with excellent formability and moderate strength; suitable for parts that require secondary machining. Automotive and electrical hardware, sleeves and shells, medium-precision components. Connector Shell, Spacer Tube, Ferrule
H70 (C26000) High-ductility brass with excellent cold-forming performance and good bending properties. Contact components, flexible connector parts, precision shims and spring-like brass elements. Contact Terminal, Precision Shim, Thin Connector Strip
H85 (C23000) Brass with relatively high copper content, offering good corrosion resistance and formability with moderate strength. Architectural and decorative hardware, industrial fittings, instrument enclosures. Valve Cover, Decorative Trim, Instrument Housing
H90 (C22000) High-copper brass with good ductility and corrosion resistance; suitable for shaped profiles and functional contact parts. Electrical and electronic hardware, lighting components, precision contact parts. Contact Lug, Connector Ring, Hardware Sleeve
H96 (C21000) Very high copper content with excellent electrical and thermal conductivity, and good resistance to atmospheric corrosion. Electrical connection components, busbars, heat-transfer and grounding parts. Earthing Bar, Connector Bus, Heat Transfer Plate
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Minhe Casting Capabilities

Capability Minhe Brass Casting
Maximum casting size Typically up to 250 × 120 × 150 mm for brass castings;
larger components can be evaluated based on geometry and tooling.
Weight range Approx. 0.2 – 30 kg per part depending on process (sand casting / gravity casting).
Minimum wall thickness Brass gravity casting typically supports 2.5–4.0 mm walls;
sand casting usually requires 4–6 mm.
Dimensional tolerance As-cast accuracy around ISO 8062-3 CT7–CT9 for brass alloys;
CNC machining enables precision features down to ±0.10–0.15 mm.
Surface roughness (as-cast) Brass castings typically achieve Ra 6.3–25 μm as-cast;
machined surfaces can reach Ra 1.6–3.2 μm.
Typical lead time Samples usually ready in 10–12 days after tool approval;
mass production typically 3–4 weeks.
Annual brass casting capacity Combined brass casting capacity of approx. 1,800 tons / year.
Processes supported Sand casting, gravity casting,
heat treatment & full in-house CNC machining.

Brass Casting Processes

Molten brass being injected into a die casting mold cavity during the brass die casting process

Die Casting

Die casting enables the production of thin-wall and complex geometries under high pressure, delivering exceptional dimensional accuracy and consistency.
It is ideal for high-volume manufacturing of precision metal components with strict tolerance requirements.

Gravity Casting

Gravity casting uses reusable metal molds and gravity-fed pouring to achieve improved density and stable dimensions.
This process suits medium- to large-sized structural parts, offering reduced internal defects and lower tooling costs than high-pressure die casting.

Brass sand casting pouring molten metal into sand mold

Sand Casting

Sand casting forms parts by pouring molten metal into expendable sand molds, allowing greater freedom in shape and section thickness.
It is suitable for prototypes, low-volume production, and large structural components where cost efficiency and flexible design are priorities.

Brass Post-Processing

Surface Preparation

Removes casting flash, sand residues, and oxide layers through trimming, deburring, shot blasting, and high-pressure cleaning, creating a clean and uniform surface for the next processing stages.

Heat Treatment

Enhances strength and dimensional stability by applying annealing, normalizing, quenching, tempering, or solution-aging treatments, depending on alloy type and performance requirements of the casting.

Surface Coating

Improves corrosion resistance, wear protection, and final appearance through anodizing, painting, powder coating, or e-coating. These finishes provide durable, application-specific protection for aluminum castings.

Advantages of Brass

  • Lightweight & High Strength Ratio
  • Excellent Machinability
  • Superior Thermal & Electrical Conductivity
  • Outstanding Corrosion Resistance
  • Wide Alloy Options & Post-Processing Flexibility
  • Cost-Effective for High-Volume Production

Brass Products

Brass casting bearing housing with mounting base and circular support

Brass Housing

Brass casting mounting bracket with single-hole upright support

Brass Bracket

Brass casting pump body with threaded ports and mounting base

Brass Pump Body

Brass casting valve body with four threaded ports for fluid control

Brass Valve Body

Brass gear housing casting with flanged front opening and threaded side ports

Brass Gearbox Case

Brass structural bracket with circular opening and reinforced mounting base

Brass Structural Part

Engineered brass alloys for precision, machinability, and durability.

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FAQ – Frequently Asked Questions

Alloy selection depends on strength, corrosion resistance, machinability, and application environment. H59 / H62 are widely used for general structural parts, H65 / H68 offer higher strength and better corrosion resistance, while C36000 is preferred for high-machinability components. Share your drawings and we can recommend the most suitable grade.
Yes. We offer complete DFM evaluation for brass casting, including wall-thickness optimization, draft angle suggestions, gating design review, and shrinkage/porosity prevention analysis. This helps ensure stable casting quality and reduces machining costs.
For gravity casting, brass alloys typically support 2.5–4.0 mm minimum wall thickness. Sand casting usually requires 4–6 mm. The final value depends on geometry and alloy flow behavior.
As-cast brass parts generally meet ISO 8062-3 CT7–CT9. With in-house CNC machining, critical features can reach ±0.10–0.15 mm accuracy and Ra 1.6–3.2 µm surface finish.
To provide an accurate quote, please include:
  • 2D/3D drawings (STEP, IGES, PDF)
  • Alloy grade (H59 / H62 / H65 / H68)
  • Annual and batch quantity
  • Critical tolerances & machining requirements
  • Surface treatment (polishing, plating, passivation, etc.)
If anything is unclear, simply send the drawing—we will assist with feasibility.
Yes. We support prototype quantities (5–30 pcs), small-batch production, and mass manufacturing. Sand casting is suitable for prototypes and complex shapes, while gravity casting provides better dimensional stability and improved surface quality.

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