CuBe2 QBe2.0 Primary Product of C17200 Beryllium Copper Sheet Stock 27mm Thickness
Product Normal Description:
Product Name: Beryllum copper sheet
Grade: C17200. Qbe2.0, CuBe2
Standard: ASTM B194
Product Size: Thickness 27mm
State: A(TB00)
Typical Application: For electrical application
Product Brand: CUBERYLLIUM®
Chemical Composition of CuBe2 QBe2.0 Beryllium Copper Alloy:
Product Grade: CUBERYLLIUM ®-172(UNS. C17200)
| Numbering | Be | Co+Ni | Cu | Fe | Pb | Si | Al |
| C17200 | 1.8-2.0 | ≥0.2 | Margin | 0.15 | - | 0.15 | 0.15 |
Note: Copper plus additions equal 99.5% Minimum.
Beryllium Copper Alloys:
Beryllium copper (C17200 & C17300) is an age-hardening alloy which attains the highest strength of any copper-base alloy. It may be age-hardened after forming into springs, intricate forms or complex shapes. It is esteemed for spring properties, erosion obstruction, soundness, conductivity, and low creep.
Tempered beryllium copper is C17200 and C17300 that has been age solidified and cold drawn. No further heat treatment is essential past a potential light pressure alleviation. It is adequately flexible to twist without anyone else measurement and can be framed into springs and most shapes. The tempered wire is most valuable where the properties of beryllium copper are wanted, yet the age solidifying of completed parts isn’t useful.
C17510 and C17500 beryllium copper alloys are age-hardenable and give great electrical conductivity, physical properties, and perseverance. They are utilized in springs and wire where electrical conduction or maintenance of properties at raised temperatures is significant.
High-quality beryllium copper combinations contain as much as 2.7% beryllium (cast), or 1.6-2% beryllium with about 0.3% cobalt (created).
High conductivity beryllium copper combinations contain as much as 0.7% beryllium with some nickel and cobalt. The thermal conductivity of these amalgams is more prominent than aluminum and somewhat not exactly unadulterated copper and are regularly utilized as electrical contacts.
Typical Physical Properties of CuBe2 QBe2.0 Beryllium Copper Alloy:
| 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 |
Temper Designations of CuBe2 QBe2.0 Beryllium Copper Plate:
| Mechanical and Electrical Properties of C17200 Sheet/Plate |
| CUBERYLLIUM | ASTM | Heat Treatment | Thickness (mm) | Tensile Strength (Mpa) | Elongation Percent | HARDNESS Rockwell B or C Scale | Electrical Conductivity
(% IACS) |
| Designation | Designation |
| A | TB00 | | All Size | 400~580 | 20~60 | B45-85 | 15～19 |
| H | TD04 | ＜10 | 600~880 | 8~20 | B91-103 | 15～19 |
| 10~25 | 600~850 | 8~20 | B90-102 | 15 ~ 19 |
| 25~50 | 580~820 | 8~20 | B88-102 | 15 ~19 |
| ＞50 | 580~820 | 8~20 | B88-102 | 15 ~19 |
| AT | TF00 |
3 hr 315℃
| All Size | 1120~1358 | 3~10 | C36-41 | 22 ~ 28 |
| HT | TH04 | 2 hr 315℃ | ＜10 | 1200~1450 | 1~5 | C38-45 | 22 ~ 28 |
| 10~25 | 1200~1500 | 1~5 | C38-44 | 22 ~ 28 |
| 25~50 | 1200~1450 | 2~5 | C37-43 | 22 ~ 28 |
| ＞50 | 1100~1350 | 2~5 | C36-42 | 22 ~ 28 |
Product Photos:
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.
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CuBe2 QBe2.0 C17200 Beryllium Copper Sheet 27mm Thickness Images
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