It is suitable for decorative hardware, stamped and stretched parts, panel nameplates, instrument and meter parts, connectors, thin sheet structural parts, and copper alloy materials requiring good formability and a golden appearance.
Brass H75 is a copper-zinc alloy material with a relatively high copper content, typically featuring good plasticity, ductility, cold workability, corrosion resistance, and decorative properties. Compared to ordinary Brass such as H59 and H62, H75 contains more copper and has a more golden or pale reddish-gold color, offering better formability and appearance quality. It is suitable for making stamped parts, drawn parts, decorative parts, connectors with low elasticity, instrument parts, and copper alloy parts with high requirements for appearance and texture.
By focusing on application scenarios, boundaries of advantages, and non-recommended scenarios, it helps sales, customer service, and quoting staff quickly determine whether the material meets current part requirements.
It has a relatively high copper content, good plasticity, good ductility, good cold workability, better appearance and color, corrosion resistance better than low-copper Brass, suitable for stamping and stretching, suitable for decorative and thin parts, can be polished, can be brushed, can be electroplated, and has a good metallic texture.
Decorative hardware, nameplates, panels, connecting pieces, gaskets, stamped parts, stretch parts, bent parts, instrument and meter parts, electronic hardware parts, metal trims, craft trims, lighting fixture decorations, musical instrument accessories, low-strength elastic clips, terminal pieces, small Brass structural parts, and small-batch high-appearance Brass processed parts.
High-strength load-bearing structural parts, high-hardness wear-resistant parts, highly conductive copper busbars, high thermal conductivity heat dissipation parts, high-elasticity snap-fit parts, high-frequency spring pieces, strong acid and alkali environment parts, long-term seawater contact parts, food direct contact parts, medical implant parts, low-cost ordinary hardware parts, and automatic lathe parts requiring extremely high cutting efficiency.
The following parameters come from product information and material knowledge fields, used for design review, quotation communication, and preliminary judgment before material selection.
| Material positioning | It is suitable for decorative hardware, stamped and stretched parts, panel nameplates, instrument and meter parts, connectors, thin sheet structural parts, and copper alloy materials requiring good formability and a golden appearance. |
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| Precision performance | Brass H75 suitable for CNC machining, stamping, drawing, bending, drilling, tapping, and general precision hardware processing. Compared to H59, H75 is generally more suitable for thin sheet forming and appearance part processing; Compared to HPb59-1, H75 has slightly lower cutting efficiency. Actual accuracy is affected by part dimensions, plate thickness, material condition, cutting tools, molds, clamping methods, machining paths, and post-processing methods. |
| Dimensional tolerances | Conventional dimensional tolerances for CNC machining Brass H75 can be referenced ± 0.02mm to ±0.10mm, while ordinary structural parts and turned parts can be evaluated at ±0.05mm to ±0.20mm. The overall dimensional tolerances for stamping, stretching, bending, and large-size thin plates may be even greater; generally, the reference ± 0.10mm to ±0.50mm is recommended. These values are standard reference ranges and are not absolute guaranteed tolerances for all structures. Precision shaft diameter, hole position, assembly surface, and appearance surface should be separately marked. |
| Minimum Wall Thickness | The wall thickness of ordinary CNC machined structures is recommended to be no less than 0.8mm-1.0mm. Stamped, stretched, and decorative parts can use thinner sheets depending on the material condition and structure, but it is not recommended to design them too thin at load-bearing positions. For thin parts, focus should be placed on bending radius, drawing depth, edge burrs, and surface protection to avoid cracking during shaping or appearance deformation. |
| Recommended wall thickness | Standard decorative pieces, nameplates, and stamped parts are recommended to be 0.3mm-1.2mm; ordinary small Brass structural parts are recommended to be 1.0mm-2.0mm or more; extruded parts, decorative shells, and bent parts should be reasonably thickened based on drawing depth, fillet radius, plate thickness, and forming risk; Threaded holes, riveting, and assembly load-bearing positions should be appropriately thickened. |
| Minimum aperture | CNC drilling can achieve smaller hole diameters, but deep small holes still require consideration of chip evacuation, burrs, and tool strength. For general designs, the recommended aperture is no less than 0.8mm-1.0mm. Stamping or etching holes are recommended to have a diameter no less than 1 times the plate thickness, and stabilization design should be no less than 1.0mm. For small holes, dense holes, and holes near bending lines or stretch areas, attention should be paid to the risk of deformation and burrs. |
| Assembly clearance | For precision metal assembly, 0.02mm-0.10mm per side can be reserved according to fitting requirements; for ordinary plug-ins, shaft hole fits, and hardware assembly, it is recommended to reserve 0.10mm-0.30mm per side. If subsequent nickel, chrome, tin, gold, or oxidation protection is required, additional gaps should be reserved according to the thickness of the coating. Stamped stretched parts must also consider springback, plate thickness tolerance, and surface treatment thickness to avoid overtightening or surface scratches. |
| Detailed performance | Brass H75 suitable for processing stamped textures, decorative lines, slots, edges, extruded surfaces, chamfers, steps, shallow reliefs, and small hardware details. After stamping, etching, and CNC machining, the details are rendered well, making them suitable for creating decorative structures with a metallic texture. Small text, logos, and markings are recommended to be marked by laser marking, engraving, etching, embossing, silkscreen printing, or electroplating for marking. |
| Surface effect | Brass H75 original surface usually appears as golden, light golden, or slightly reddish Brass texture, with a more coppery texture than H59 and H62. Polishing produces a brighter golden metallic appearance; brushing produces a delicate linear texture; sandblasting produces a soft matte Brass effect. Long-term exposure to air, humidity, or sweat environments may oxidize and darken, resulting in dark yellow, brown, or spots on the surface. If long-term appearance is needed, nickel, chrome, gold, transparent protection, or oxidation resistance treatments can be applied. |
Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.
Decorative hardware, nameplates, panels, connecting pieces, gaskets, stamped parts, stretch parts, bent parts, instrument and meter parts, electronic hardware parts, metal trims, craft trims, lighting fixture decorations, musical instrument accessories, low-strength elastic clips, terminal pieces, small Brass structural parts, and small-batch high-appearance Brass processed parts.
It is suitable for decorative hardware, stamped and stretched parts, panel nameplates, instrument and meter parts, connectors, thin sheet structural parts, and copper alloy materials requiring good formability and a golden appearance.
The main features of Brass H75 are a higher copper content, with material colors closer to golden yellow or light red-gold, and a textured appearance superior to low-copper Brass. It has good cold working and ductile properties, suitable for stamping, stretching, bending, and decorative parts processing. Compared to H59, H75 offers better formability and decorative properties, but its strength, hardness, and cutting efficiency may not necessarily be higher; Compared toPure CopperT2, H75 has better strength and hardness, but weaker electrical and thermal conductivity.
Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for Brass H75.
Post-processing of Brass H75 affects appearance, dimensions, hole position, assembly clearance, and usage validation results, and should be explained in advance during quotation, DFM review, and sample confirmation stages.
Post-processing should focus on appearance display, dimensional fitting, connection assembly, and testing verification. Parts involving assembly positions need to be reserved in advance for machining, coating, and trial assembly allowances.
For common issues such as threads, snaps, strength, temperature resistance, and weather resistance, identify in advance whether the material needs to be replaced or if another processing method should be used.
When customer demand exceeds Brass H75 material boundaries, it is necessary to combine strength, temperature resistance, toughness, long-term stability, and mass production goals to promptly recommend alternative materials or processing technologies.
If lower cost and standard Brass structural parts are needed, H59Brass can be chosen; If a more balanced formability and cost are needed, H62Brass can be chosen; If higher cutting efficiency and automatic lathe performance are required, HPb59-1 lead Brass or environmentally friendly easy-cutting Brass can be chosen; If higher electrical and thermal conductivity is required, Pure CopperT2 or TU2 Oxygen-Free Copper can be chosen; If higher elasticity and fatigue life are needed, beryllium copper C17200 or phosphor bronze can be chosen; If higher corrosion resistance and structural strength are required, 304 stainless steel, 316 stainless steel, or QAl9-4 Aluminum Bronze can be chosen.
If customers mainly care about Brass appearance, stamping and tensile performance, decorative texture, and medium to low-strength hardware structures, Brass H75 is a more suitable choice. If the customer mainly produces batch turning nuts, joints, and automatic lathe parts, the HPb59-1 or other easy-Brass machining is more suitable. If customers mainly focus on electrical and thermal conductivity, they should choosePure Copperor oxygen-free copper. If customers have high environmental requirements for food, drinking water, children's products, or exports, they should confirm material standards and surface treatment requirements in advance.
After uploading 3D/2D drawings and supplementing materials, quantities, tolerances, surface treatments, and delivery requirements, XPartsLab will provide next steps in 3D printing manufacturability, cost, and delivery pathways.
