ASTM B103 51900 Phosphor Bronze Plate
"Brass plate" typically refers to a brass nameplate or a brass plaque, often used for identification purposes, such as being affixed to doors, walls, or coffins to indicate a name, title, or other information. Brass, a metal alloy primarily composed of copper and zinc, is chosen for its durability, resistance to corrosion, and aesthetic appeal. The term "brass plate" can also refer to a thicker sheet of brass material, though its primary usage is in the context of nameplates or plaques.
Product Parameters
Basic informationInternational standard: ASTM B103 (phosphor bronze strip standard)
Chinese brand: QSn6.5-0.1 (GB/T 5231)
Alloy type: high tin phosphor bronze
Key components:
Copper (Cu): balance (≥93.5%)
Tin (Sn): 6.0-7.0% (core strengthening element)
Phosphorus (P): 0.10-0.25% (deoxidation + strengthening)
Total impurities: ≤0.3%
Physical property matrix
PropertiesTypical valueTest standard
Density8.92 g/cm³ASTM B193
Liquidus995°CDSC test
Resistivity14.5 μΩ·cm20℃ test
Thermal conductivity70 W/(m·K)ASTM E1225
Modulus of elasticity115 GPaDynamic resonance method
Mechanical property gradient
StateTensile strength (MPa)Yield strength (MPa)Elongation (%)Hardness (HV)
Annealed (O)350-400150-180≥4590-110
1/2 hard (H02)500-550400-450≥15150-170
Full hard (H04)650-750600-650≥3200-240
Product specification systemUltra-high precision tolerance:
0.05-0.1mm: ±0.003mm (electronic grade)
0.1-1.0mm: ±0.01mm
1.0-6.0mm: ±0.03mm
Special form:
Superelastic strip (δ≥55%)
Foil for photolithography (thickness ≤50μm)
Surface treatment options
Treatment typesTechnical parametersPerformance improvement

Electroless nickel platingThickness 3-5μmContact resistance ≤ 5mΩ

Ion gold platingThickness 0.1-0.3μmCorrosion resistance increased by 20 times

Laser texturingWavelength 1064nmFriction coefficient reduced by 35%

Typical high-end applicationsPrecision electronics:
Mobile phone SIM card holder shrapnel
High-speed connector (transmission rate ≥ 10Gbps)
MEMS device cantilever beam
Instruments:
Precision pressure gauge Bourdon tube
Optical instrument leveling mechanism
High-precision weighing instrument sensor
Special fields:
Aerospace relay (MIL-PRF-39016)
Nuclear control rod drive mechanism
Implantable medical devices


Product Display

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Product Application

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Product Packaging

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Factory Display
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FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:How can I get a quotation from you ?

A:You can leave us message, and we will reply every message in time. Or we may talk on line.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Q:What are the advantages of your company?

A:(1)More Than 30 year's Experience

(2)The company is a modern steel enterprise group integrating precision manufacturing, spot warehousing, international logistics, and product deep processing.

(3)World-class production equipment, product quality that meets international certifications, and timely and thoughtful after-sales service

(4)Never stop product research and development and innovation to create high-quality products that meet the global standards.

(5)Integrity business philosophy, the highest quality products, the most reasonable prices, and a global marketing network.

Q:How do we trust your company?

A:We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.

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