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Contact name:Yomi
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DIN.2.1247 Beryllium Copper Round Bar & Rods By Quality Standard SAE J461, 463
Product Normal Description:
Product Name: Beryllium copper round bar & rods
Grade: DIN.2.1247
Standard: ASTM B196,251,463; SAE J461,463; AMS 4533,4534,4535; AMS 4650,4651; RWMA Class 4
Product Diameter: 5mm-100mm
State: A(TB00),1/2H (TD02), H(TD04),AT(TF00),HT(TH04)
Typical Application: For electrical industry
Product Brand: CUBERYLLIUM®
Uses of DIN.2.1247 (C17200) Beryllium Copper:
Injection molds and high pressure blow molds, mold inserts, rapid cooling, aluminum alloy mold inserts, increase strength, wear resistance and shorten the injection cycle, hot runner nozzles, electrodes and punch materials, not affected by magnetic molds, non-magnetic tools , high thermal conductivity bearings, can make mirrors with high surface accuracy.
Chemical Composition of DIN.2.1247 Beryllium Copper Alloys (CUBERYLLIUM ®-172):
Product Grade: CUBERYLLIUM ®-172(UNS. C17200)
Beryllium(Be): 1.80-2.00%
Cobalt(Co) + Nickel(Ni): 0.20% Min
Cobalt(Co) + Nickel(Ni) + Iron(Fe): 0.60% Max
Lead: 0.02% Max
Copper(Cu): Balance
Note: Copper plus additions equal 99.5% Minimum.
Typical Physical Properties of DIN.2.1247 Beryllium Copper Alloys (CUBERYLLIUM ®-172):
| Density (g/cm3): | 8.36 |
| Density before age hardening (g/cm3): | 8.25 |
| Elastic Modulus (kg/mm2 (103)): | 13.4 |
| Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): | 17 x 10-6 |
| Thermal Conductivity (cal/(cm-s-°C)): | 0.25 |
| Melting Range (°C): | 870-980 |
Mechanical and Electrical Properties of DIN.2.1247 Beryllium Copper Round Bar & Rods:
| Temper(*) | Diameter | Heat Treatment | Tensile Strength ksi | Elogation Percent (Min) | Electrical Conductivity Percent IACS | Hardness Rockwell B or C Scale |
|---|---|---|---|---|---|---|
| A(TB00) | ALL SIZE | / | 400~600 | 30 | 15~19 | B45~85 |
| 1/2H(TB04) | 5~40 | / | 550~700 | 10 | 15~19 | ＞B78 |
H(TD04) | 5~10 | / | 660~900 | 5 | 15~19 | ＞B88 |
| ＞10~25 | / | 620~860 | 5 | 15~19 | ||
| ＞25 | / | 590~830 | 5 | 15~19 | ||
| AT(TF00) | ALL SIZE | 3 hr 320°C | 1100~1380 | 2 | 22~28 | C35~42 |
| HT(TH04) | 5~10 | 2 hr 320°C | 1200~1550 | 1 | 22~28 | C37~45 |
| ＞10~25 | 1150~1520 | 1 | 22~28 | C36~44 | ||
| ＞25 | 1120~1480 | 1 | 22~28 | C35~44 |
The most important Technology of CUBERYLLIUM ®
A: Heat treatment
Heat treatment is the most important process for this alloy system. While all copper alloys are hardenable by cold working, beryllium copper is unique in being hardenable by a simple low temperature thermal treatment. It involves two basic steps. The first is called solution annealing and the second, precipitation or age hardening.
B: Solution Annealing
For the typical alloy CuBe1.9 (1.8- 2%) the alloy is heated between 720°C and 860°C. At this point the contained beryllium is essentially “dissolved” in the copper matrix (alpha phase). By rapidly quenching to room temperature this solid solution structure is retained. The material at this stage is very soft and ductile and can be readily cold worked by drawing, forming rolling, or cold heading. The solution annealing operation is part of the process at the mill and is not typically used by the customer. Temperature, time at temperature, quench rate, grain size, and hardness are all very critical parameters and are tightly controlled by ohmalloy.
C: Age Hardening
Age hardening significantly enhances the material’s strength. This reaction is generally carried out at temperatures between 260°C and 540°C depending on alloy and desired characteristics. This cycle causes the dissolved beryllium to precipitate as a beryllium rich (gamma) phase in the matrix and at the grain boundaries. It is the formation of this precipitate which causes the large increase in material strength. The level of mechanical properties attained is determined by the temperature and time at temperature. It should be recognized that beryllium copper has no room temperature aging characteristics.
Product Photos:
FAQ:
Q1:What is copper round bar export package?
A1: Usually in bundle with plastic film, carton and wooden pallent.
Q2: What is your MOQ of copper bar?
A2: MOQ is 50kgs.
Q3:What is your delivery time?
A3:Normally it is 15-20 days after getting the payment.
Q4: What's the payment terms?
A4: We accept T/T, L/C, Paypal etc. It can be negotiated when the
amount is different..
