H62/H59 Messing
& Umformbarkeit
Zerspanbarkeit
Beständigkeit
H62/H59 Messing:Die Grundlagen
Sowohl H62 als auch H59 gehören zur Kategorie der Standard-Messingsorten für die allgemeine Fertigung. In der Metallverarbeitung ist Messing eine Kupfer-Zink-Legierung und die am weitesten verbreitete Type innerhalb der Kupfer-Zink-Legierungsfamilie.
Die Benennungsregel für Standard-Messing ist einfach: Der Buchstabe “H” steht für Messing, und die nachfolgende Zahl gibt den Kupfergehalt an. Zum Beispiel bedeutet H62, dass der Kupfergehalt etwa 62% beträgt, während H59 bedeutet, dass der Kupfergehalt etwa 59% beträgt.
Beide Messingsorten haben eine Alpha-plus-Beta-Duplexgefüge. Innerhalb eines bestimmten Zinkgehaltbereichs bilden Kupfer-Zink-Legierungen zwei verschiedene Phasen. Die Alpha-Phase ist eine feste Lösung von Zink in Kupfer, die dem Werkstoff gute Duktilität verleiht. Die Beta-Phase ist eine feste Lösung auf Basis der CuZn-Elektronenverbindung. Sie hat bei erhöhten Temperaturen eine gute Plastizität, während sie bei Raumtemperatur tendenziell eine höhere Härte aufweist.

Was sind die Unterschiede zwischen H62 und H59 Messing?
Der größte Unterschied zwischen H62 und H59 ergibt sich aus der Veränderung des Kupfer-Zink-Verhältnisses, das direkt beeinflusst, wie sich der Werkstoff verhält.
Materialauswahl-Vergleich
| Vergleichsfaktor | H62 tendiert zu | H59 tendiert zu | Besser geeignete Projekttypen |
|---|---|---|---|
| Zusammensetzung | Höherer Kupfergehalt | Höherer Zinkgehalt | Beginnen Sie mit den Umformanforderungen, dann wägen Sie Festigkeit und Kosten ab |
| Festigkeit und Härte | Mittel bis hoch, mit deutlicher Verbesserung je nach Härtezustand | Höher, mit stärkerer Tendenz zu erhöhter Härte | Verbindungselemente, Beschläge und lasttragende Teile ziehen eher H59 in Betracht |
| Duktilität und Umformbarkeit | Breiteres Kaltumformfenster | Besser geeignet für die Warmumformung | Tiefziehen, Bördeln und komplexes Biegen begünstigen eher H62 |
| Zerspanungsverhalten | Zerspanbar, mit ausgewogener Gesamtleistung | Etwas direkteres Schneidverhalten | H59 ist oft eine Überlegung wert, wenn Gewindeschneiden, Nutfräsen oder Zerspanung einen großen Anteil am Prozess ausmachen |
| Kostenprofil | Höherer Kupfergehalt, daher sind die Materialkosten in der Regel höher | In der Regel kosteneffizienter | Kostenempfindliche Projekte nehmen H59 eher in die engere Auswahl auf |

Chemische Zusammensetzung
| Element | H62 Messing | H59 Messing |
|---|---|---|
| Kupfer (Cu) | 60.5%–63.5% | 57.0%–60.0% |
| Zink (Zn) | Rest | Rest |
| Blei (Pb) | ≤ 0,08% | ≤ 0,5% |
| Eisen (Fe) | ≤ 0,15% | ≤ 0,3% |
| Wismut (Bi) | ≤ 0,002% | ≤ 0,003% |
| Phosphor (P) | ≤ 0,01% | ≤ 0,01% |
| Gesamtverunreinigungen | ≤ 0,5% | ≤ 1,0% |
Hinweis: H59 hat eine höhere Obergrenze für den Bleigehalt, bei etwa 0,5%. Blei kann die Zerspanbarkeit verbessern, kann aber auch Bedenken hinsichtlich der Umweltkonformität hervorrufen. Wenn Sie ein umweltkonformes bleifreies Messing, benötigen, sollte dies im Voraus klar angegeben werden.
Gängige ungefähre internationale Entsprechungen
| Land/Region | H62-Entsprechung | H59-Entsprechung |
|---|---|---|
| China (GB) | H62 | H59 |
| Vereinigte Staaten (ASTM) | C27400 | C28000 |
| Deutschland (DIN) | CuZn37 | CuZn40 |
| Japan (JIS) | C2800 | C2801 |
| International (ISO) | CuZn37 | CuZn40 |
| European Union (EN) | CW508L | CW507L |
Performance Properties
| Eigenschaft | H62 Messing | H59 Messing |
|---|---|---|
| Dichte | 8.43–8.47 g/cm³ | Approx. 8.45 g/cm³ |
| Schmelzpunkt | 905–930°C | Approx. 900–920°C |
| Wärmeleitfähigkeit | 110–120 W/(m·K) | Approx. 105 W/(m·K) |
| Elektrische Leitfähigkeit | 25%–30% IACS | Approx. 28% IACS |
| Tensile strength, annealed | 300–350 MPa | 300–350 MPa |
| Tensile strength, hard temper | ≥400 MPa, can exceed 500 MPa | 400–450 MPa |
| Yield strength, annealed | Approx. 100 MPa | Approx. 120 MPa |
| Yield strength, hard temper | 200–230 MPa | 280–310 MPa |
| Elongation, annealed | ≥38% | ≥25% |
| Elongation, hard temper | ≥10% | 10%–15% |
| Brinell hardness, annealed | Approx. 55 HB | Approx. 65 HB |
| Brinell hardness, hard temper | 100–120 HB | 160–180 HB |
| Wärmeausdehnungskoeffizient | 20.6 × 10⁻⁶/°C | Approx. 20.5 × 10⁻⁶/°C |
| Elastizitätsmodul | Approx. 100 GPa | Approx. 100 GPa |
What Sheet Metal Fabrication Processes Are H62/H59 Messing geeignet?
Brass is one of the copper alloys that sheet metal fabricators most like to work with. It offers good workability, an attractive appearance, and, just as importantly, a cost profile that fits high-volume production well. That said, H62 and H59 do differ in performance, so their suitability can vary depending on the process.
Process Compatibility
| Prozessart | H62 Performance | H59 Performance | Key Processing Considerations |
|---|---|---|---|
| Laserschneiden | Suitable for precision cutting, more common in thin-gauge parts | Also suitable for precision cutting, but pierce start and heat input control are more critical | Reflectivity, thermal conductivity, heat tint on edges, and burr control |
| CNC punching / stamping | Better suited to cold stamping, flanging, and embossing | More often used for blanking and hot-forming applications | Die clearance, lubrication, and the cracking window at cut edges |
| Biegen | Allows more flexibility in inside radius control | A more conservative bend radius is recommended | Grain direction, temper, springback, and bend sequence |
| Drilling / tapping / milling | Zerspanbar, mit ausgewogener Gesamtleistung | Machining response is usually more direct | Tool sharpness, chip evacuation, and burr control |
| Soft soldering / brazing | High compatibility | High compatibility | Joint cleanliness and heat-affected-zone discoloration |
| Arc welding processes | Feasible | Feasible | Heat input, spatter, and post-weld surface finishing |
Hinweis: Whether you choose H62 or H59, stress-relief annealing is generally recommended after cold working to reduce residual stress. A typical practice is to hold the material at 300 to 400°C for 1 to 2 hours.
Key Points for Surface Finishing and Appearance Control of H62/H59 Messing
In practice, there are four main things to watch when it comes to brass surface finishing and appearance control.
- First, surface cleanliness matters. Any residue left from fabrication can affect both the finishing result and the final appearance of the part.
- Second, oxidation and discoloration need attention. The time from raw material release to completed fabrication can be relatively long, and the longer brass is exposed to air, the more noticeable the discoloration can become. It is best to keep production moving efficiently or use appropriate protective measures.
- Third, scratches and dents must be controlled carefully. Brass is relatively soft, so any handling or transport issue can leave visible surface damage. Proper protection is essential.
- Fourth, batch consistency should be considered. Different material batches may show slight color variation, so for large-volume production, it is usually better to use material from the same batch whenever possible.
Surface Treatment Options
| Treatment Method | Typische Anwendung | Effect | Environmental Profile | Kosten |
|---|---|---|---|---|
| Natural oxidation | Internal parts, low-requirement applications | Basic protection | Ausgezeichnet | Very low |
| Mechanical polishing | All brass parts | Improves gloss | Gute | Mittel |
| Chemical polishing | High-volume processing of complex shapes | Rapid brightening | Fair | Mittel |
| Elektropolieren | Precision parts with high appearance requirements | Mirror-like finish | Fair | Higher |
| Chromium-free passivation | General protection | Tarnish resistance for 24 to 72 hours | Ausgezeichnet | Niedrig |
| BTA treatment | Electronic components | Strong anti-tarnish protection | Ausgezeichnet | Niedrig |
| Nickel / chrome plating | Bathroom hardware, decorative parts | Long-term protection | Fair | Hoch |
| Electroless nickel plating | Precision components | High corrosion resistance | Fair | Higher |
| Tin plating | Electronic soldering parts | Good solderability | Fair | Mittel |
| Clear lacquer coating | Outdoor decorative parts | Long-term protection | Fair | Mittel |
| VCI packaging | Storage and transportation | Temporary rust prevention | Ausgezeichnet | Niedrig |
Typische Anwendungen
| Application Area | Typical Parts | Recommended Material | Why It Is Chosen |
|---|---|---|---|
| Mechanical fasteners | Bolts, screws, nuts | H62 preferred | Good machinability and sufficient strength |
| Structural load-bearing parts | Bushings, sleeves, flanges | H59 preferred | Higher strength and lower cost |
| Architectural hardware and decorative parts | Door locks, hinges, handles | H62 preferred | Better appearance and good workability |
| Plumbing fittings | Valves, pipe fittings, elbows | H62 preferred | Good resistance to freshwater corrosion and weldable |
| Electronic connectors | Terminals, switches, conductive strips | H62 preferred | Better conductivity and better formability |
| Radiator components | Heat dissipation fins, tubing | H62 preferred | Better thermal conductivity |
| Automotive parts | Fasteners, tubing parts | Both can be used | Selection depends on strength requirements |
| Musical instrument parts | Reeds, tuning pegs, mouthpieces | H62 preferred | Better acoustic performance |
| Decorative and artistic parts | Medals, lighting fixtures, sculptures | Both can be used | Attractive appearance |
| Hot-forged parts | Complex structural parts | H59 preferred | Excellent hot-working performance |
How Should You Choose Between H62 and H59 Brass?
Schnellauswahlhilfe
| Anforderungstyp | Recommended Material | Why |
|---|---|---|
| Complex cold forming or deep drawing | H62 | Better ductility and less risk of cracking |
| Cost-sensitive projects with limited budget | H59 | Higher zinc content and lower material cost |
| High-strength structural parts | H59 | Higher strength and better wear resistance |
| High surface finish requirements | H62 | More even color and easier to polish |
| Electronics or welding applications | H62 | Slightly better conductivity and better weldability |
| Freshwater or atmospheric environments | Both can be used | Selection should be based on the full application requirements |
| Coastal or highly corrosive environments | H62 is generally the better choice | Relatively better corrosion resistance |
| Hot forging or hot extrusion | H59 | Excellent hot-working performance |
| Strict EU or environmental compliance requirements | H62 | Lower lead content |
| Standard specifications commonly used in North America | Both can be used | Clear corresponding standard grades are available |
What Information Should You Provide in an RFQ for H62/H59 Brass Parts?
The purpose of the checklist below is to help you provide all the key details up front, so suppliers can quote faster and evaluate both samples and mass production more smoothly.
RFQ Information Checklist
| Informationskategorie | Required / Recommended | Example |
|---|---|---|
| Materialgüte | Erforderlich | H62, C28000, CuZn37 |
| Material temper | Erforderlich | Soft (M), hard (Y), half-hard (Y2) |
| Product form | Erforderlich | Sheet, strip, bar, tube, custom profile |
| Abmessungen | Erforderlich | Thickness × width × length, diameter, wall thickness |
| Menge | Erforderlich | 500 pcs, 2 tons, 5 tons per month |
| Chemical composition requirements | Empfohlen | Lead-free, low lead, special impurity limits |
| Mechanical property requirements | Empfohlen | Tensile strength ≥ 400 MPa, hardness ≤ 110 HB |
| Oberflächenzustand | Empfohlen | Polished, pickled, brushed, bright finish |
| Dimensional tolerances | Empfohlen | ±0.05 mm, ±3% thickness |
| Lead time requirement | Empfohlen | Within 3 weeks, before the end of the month, urgent order |
| Quality requirements | Empfohlen | Material certificate, third-party inspection report |
| Zertifizierungsanforderungen | Empfohlen | RoHS, REACH, IATF 16949 |
| Application description | Empfohlen | Radiator component, automotive connector |

