Safe Alternative To Beryllium Copper (UNS C17500)
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Safe Alternative To Beryllium Copper (UNS C17500)

C72900 material is a non-sparking, non-magnetic Beryllium Copper (BeCu) C17500 alternative with similar mechanical properties but without the harmful exposure risks.
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Product Introduction

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of safe alternative to beryllium copper (uns c17500) in China, also supports customized service. Welcome to buy discount safe alternative to beryllium copper (uns c17500) for sale here from our factory. Quality products and reasonable price are available.

 

Benefits
No carcinogenic elements - only copper/nickel/tin
High strength, excellent formability, no dimensional instability
Excellent stress relaxation resistance at high temperatures
No deformation during aging
Excellent resistance to shrinkage and warping - 10 times better than BeCu
Excellent solderability, low intermetallic formation at high temperatures
Excellent corrosion resistance, easy to clean
Applications
Designed for applications in the electronics, mining and drilling, and medical markets. Key applications include:

Electronic connectors
Drill bit bearing materials
Shaped charge bushing materials
Downhole housings, centralizers, joints
Landing gear bushings and bearings

Parts can be age-hardened by a simple heat treatment without part distortion. No fixturing is required. Age-hardening is suitable for part geometries that require the highest strength and excellent formability, such as spring clips and electronic contacts. Other age-hardening alloys, such as beryllium copper, can deform significantly during the hardening heat treatment. This distortion is caused by differential shrinkage and can result in poor part dimensional accuracy. In some cases, this distortion can be suppressed by using a fixation heat treatment of the beryllium copper part, but the processing cost is much higher. AM 388™ (UNS C72650) is another patented Spinodal alloy that has a higher conductivity than , and excels in electronic connectors, sockets and switches.
Age-hardening for deep hole penetration applications
Pfinodal® strip can be age-hardened by heat treatment to ensure the high hardness required for deep hole penetration applications. Heat treatment produces excellent mechanical properties with ultimate tensile strength up to 195 ksi (1344 MPa) and hardness up to 410 (VHN). Key applications include parabolic cone perforating charges for perforating liners in oil and gas wells.

(C72900) Chemical Composition
Nickel 14.5 - 15.5%
Tin 7.5 - 8.5%
Copper Balance
Copper and named elements 99.90%
Other elements 0.10% Maximum
 (C72900) Physical Properties
Electrical Conductivity at 68°F (20°C) 7.8 % IACS
Electrical Conductivity at 392°F (200°C) 7.3 % IACS
Thermal Capacity (Specific Heat) 0.09
(30 x 103)
BTU / lb° at 68°
(J/Kg K)
Thermal Conductivity 17
29
BTU/ ft • HR • °F at 68°
w/m°K at 20°C
Coefficient of Thermal Expansion 9.1 x 10-6 In/In/°F
68°F - 572°F
16.4 x 10-6 Per °C,
20°C - 200°C
Modulus of Elasticity (Tension) 18.5 x 106
(127 x 103)
Psi
(MPa)
Modulus of Rigidity 7.5 x 106
(52 x 103)
Psi
(MPa)
Density 0.323
(8.95)
Ib/in3
(gm/cc)

 

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