UNS.C17300 Leaded Beryllium Copper

Cube2Pb--C17300 (CDA 173) The Leaded Beryllium Copper is identical to a version of lead-containing alloy C17200 and achieves the same exceptional strength after hardening. C17300 rods contain a small amount of lead to provide an alloy tailored for automatic machining operations and the Lead promotes formation of finely divided chips thus extending cutting tool life.
The performance of C17300 high-strength beryllium bronze is equivalent to C17200. But C17300 contains 0.2%-0.6% of lead, which increases the alloy's cutting coefficient from 20% to 50% (100% for free-cutting brass), which greatly improves the machining performance of the alloy and better adaptability Precision requirements for precision parts. C17300 free-cutting beryllium bronze has good processing performance, high thermal conductivity, weldability, corrosion resistance, polishability, wear resistance, adhesion resistance, and can be forged into various shapes of parts, and its strength and wear resistance ratio Chromium-zirconium copper alloy has better physical properties and is used in medium-strength and high-conductivity parts, such as: fuse fasteners, springs, connectors, resistance spot welding heads, seam welding rollers, die-casting machine die heads, plastic molding dies, Probes, coaxial connectors, photomultiplier tubes, high-precision instruments, military aerospace, etc.

Typical Application for CuBe2Pb- C17300 Leaded Beryllium Copper Alloys

C17300 free-cutting beryllium bronze has good processing performance, high thermal conductivity, weldability, corrosion resistance, polishability, wear resistance, adhesion resistance, and can be forged into various shapes of parts, and its strength and wear resistance ratio Chromium-zirconium copper alloy has better physical properties and is used in medium-strength and high-conductivity parts, such as: fuse fasteners, springs, connectors, resistance spot welding heads, seam welding rollers, die-casting machine die heads, plastic molding dies, Probes, coaxial connectors, photomultiplier tubes, high-precision instruments, military aerospace, etc.
  • Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors, Contact Bridges, Belleville Washers, Navigational Instruments, Clips Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts
  • Industrial: Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment, Bellows
  • Available Sizes: Custom Diameter & Sizes, Random Mill lengths
  • Available Products (forms): Round bars, Round wires, Round tube Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates Custom shapes are available upon request.

Special Application Of C17300

When used as an insert in a plastic mold, C17300 free-cutting beryllium bronze can effectively reduce the temperature of the heat concentration zone and simplify or eliminate the design of cooling water channels. The excellent thermal conductivity of beryllium bronze is about 3-4 times better than that of mold steel. This feature can ensure rapid and uniform cooling of plastic products, reduce product deformation, unclear appearance details and similar defects. In most cases, it can be significantly Shorten the production cycle of products. Therefore, beryllium cobalt copper can be widely used in:
  • Moulds, cores, inserts that require rapid and uniform cooling, especially high thermal conductivity, corrosion resistance and good polishing requirements;
  • The nozzle and the confluence cavity of the hot runner system in injection molding; the mold, core, and corner inserts of the TV shell in the injection mold;
  • Inserts for the clamping part, the rigid ring and the handle part of the blow mould.

C17300 Chemical Composition

Executive standard:ASTM/GB/T5233-2001/EN12163(%max., unless shown as range or min.)
NumberingBeCo+NiCuFePbSiAl
C17300 1.8-2.0 Co+Ni≥0.2 Margin 0.15 0.2-0.6 0.15 0.15

Mechanical properties and conductivity analysis

(AT/TF00)
Status Tensile Strength/MPa Yield Strength/MPa Rockwell Hardness/B Elongation/4*DA min% Conductivity/%IACS
A(TB00) Solution heat treatment state 410-590 410-590 140 B 45-85 20 —
H(TD04) Hard state Diameter less than 10mm 620-900 520 B 88-103 8 >17
H(TD04) Hard state 10-25mm in diameter 620-860 520 B 88-102 8 >17
H(TD04) Hard state 25-75mm diameter 590-830 520 B 88-101 8 >17
AT(TF00) Precipitation heat treatment 1140-1380 1140-1380 1000 C 36-42 4 ——
HT(TH04) Hard and precipitation heat treatment 1140-1380 1140-1380 1070 C 38-44 2 >22

Available Status

Brush Name ASTM Name Description
A TB00 Solution annealing state (quenched state)
½H TD01 Quarter hard
½H TD02 Half hard (semi-hard)
¾H TD03 Three-quarters hard
H TD04 Hard state (full hard)
AT TF00 Standard aging heat treatment in quenched state
¼HT TH01 Quarter hard standard aging heat treatment
½HT TH02 Half-hard standard aging heat treatment
¾HT TH03 Three-quarters hard standard aging heat treatment
HT TH04 Hard standard aging heat treatment (a process of comprehensive strengthening of deformation and aging)
Note: In the Brush name:
  • "A" represents the state of solution annealing (annealed, the alloy is in the softest state, easy to be stamped and formed, and needs to be cold worked or strengthened during the direct failure period);
  • "H" stands for cold processing state (hard);
  • "T" means that the material has been aging hardened by standard heat treatment (heat treatment means the state of aging strengthening heat treatment).