Description
C51900 Phosphor Bronze Plate and Sheet
C51900 phosphor bronze plate, also known as CuSn6 bronze sheet, is a copper-tin-phosphorus alloy selected for the required mechanical strength, spring properties, and corrosion resistance. ASTM B103 includes C51900 flat products. The catalogue describes this alloy with nominal 6% tin, a small amount of phosphorus, and the balance copper. These elements enhance the alloyβs wear resistance, fatigue strength, and overall stability under cyclic loads.
Thanks to its unique metallurgical structure, C51900 bronze is widely used in high-performance industrial applications, particularly where durability, dimensional accuracy, and conductivity must be maintained over long service cycles.With its balance of conductivity, strength, and corrosion resistance, C51900 phosphor bronze plate is a top choice for OEM and custom part manufacturers.
π© Key Features of C51900 Alloy Plate
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High Strength & Elasticity
The catalogue lists tensile strength of 360β550 MPa. Confirm the ordered temper, thickness and mechanical tests for repeated flexing or load-bearing components. -
Excellent Cold Workability
Select CuSn6 bronze sheet thickness and temper for stamping, drawing or rolling; confirm the forming conditions for the part geometry. -
Superior Wear Resistance
The tin component (6%) enhances anti-galling properties, making this material suitable for frictional components like washers, bushings, and bearings. -
Stable Electrical Conductivity
Despite its strength, C51900 maintains good electrical conductivity, enabling use in electrical connectors, switch parts, and grounding terminals. -
Corrosion Resistant
For humid, acidic or marine service, confirm the medium, temperature, component design and required corrosion acceptance criteria.
For a detailed datasheet including mechanical, electrical, and thermal properties, see the C51900 alloy overview on MatWeb (matweb.com).
βοΈ Chemical Composition (Typical)
The current catalogue reference table is product information, not certified grade acceptance ranges. For order acceptance, confirm the C51900 grade standard and the batch material certificate, including phosphorus and other specified elements.
| Element | Content (%) |
|---|---|
| Copper (Cu) | 93.8 min |
| Tin (Sn) | 5.5β6.5 |
| Phosphorus (P) | β€ 0.035 |
| Iron, Zinc, Lead (traces) | β€ 0.05 |
For official standards and specifications, refer to the ASTM B103/B103M standard for phosphor bronze plate (astm.org).
π Available Specifications
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Thickness: 0.2mm β 6.0mm
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Width: up to 600mm
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Length: Standard 1000mm / 2000mm or customized
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Tempers: O (annealed), 1/2H (half hard), H (full hard)
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Surface Finish: Bright, matte, or rough-rolled finish
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Standard References: ASTM B103, JIS H3110, DIN 17660; confirm the ordered grade, form, temper and edition
- We offer C51900 phosphor bronze plate in various thicknesses from 0.2mm to 6.0mm, with customizable widths and lengths to fit your exact production requirements.
π§ Typical Applications
C51900 phosphor bronze plate is engineered for use in demanding environments where reliability and strength are critical:
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Electrical Connectors & Terminals
High conductivity and fatigue resistance make it ideal for power distribution and signal components. -
Spring Elements & Contact Springs
Specify the spring geometry, temper and load-cycle requirements; confirm allowable deformation through the applicable tests. -
Precision Washers & Bushings
High wear resistance and dimensional stability under stress make it suitable for high-speed mechanical systems. -
Musical Instruments & Audio Devices
Used for reeds, keys, and mechanical parts in wind and percussion instruments due to its acoustic properties. -
Aerospace & Defense Components
Where durability, low maintenance, and corrosion resistance are essential.
In addition to its mechanical and electrical capabilities, C51900 phosphor bronze also offers excellent machinability, making it suitable for precision CNC milling, stamping, and bending operations. Its surface maintains dimensional accuracy even after extended use, allowing engineers and designers to rely on it for components with tight tolerance requirements. Whether used in large-scale manufacturing or small-batch prototyping, this alloy delivers consistent and predictable performance.
Define the acceptance criteria for C51900 phosphor bronze plate by the application, drawing and ordered material tests.
π¦ Packaging & Customization
We supply C51900 alloy plates in secure export packaging with optional:
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PE film or interleaf paper between sheets
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Wooden crates for marine shipment
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Custom stamping, laser engraving, CNC profiling available
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Specify the Material Test Certificates (MTC) required and confirm availability with the quotation
π Why Choose NiTiCu Metal?
At Shaanxi Nickel Titanium Copper Metal Co., Ltd., we specialize in supplying high-purity copper alloys including C51900 phosphor bronze. With over 10 years of experience in non-ferrous metal processing, we offer:
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Tight tolerance machining
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Ordered standard and inspection requirements confirmed with the quotation
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Fast lead time & worldwide delivery
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Multilingual customer support
Ordering C51900 Phosphor Bronze Plate
For C51900 plate or sheet, provide thickness, width, length, temper and quantity. For spring contacts or formed parts, include the drawing and the required forming, fatigue or electrical checks. Confirm the ordered grade and batch material certificate rather than using the catalogue reference table as acceptance limits.
Related material routes: copper-alloy plates and sheets; C54400 leaded phosphor bronze plate; C26000 brass forming sheet. Send the grade, dimensions and required documents through Contact NiTiCu.
π Contact Us
π§ Email: sales@niticu.com
π Phone / WhatsApp / WeChat: +86 13335373172
π Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
π Website: https://niticu.com
π© Contact us now for pricing, samples, and expert technical support β we respond within 24 hours.

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