What grades of beryllium copper do beryllium copper manufacturers tell you?


Beryllium copper is a copper alloy primarily composed of beryllium, also known as beryllium bronze. According to publicly available information, the main grades of beryllium copper (beryllium bronze) can be classified based on beryllium content, standard system, and characteristics

Beryllium copper is a copper alloy primarily composed of beryllium, also known as beryllium bronze. According to publicly available information, the main grades of beryllium copper (beryllium bronze) can be classified based on beryllium content, standard system, and characteristics as follows:

High performance beryllium copper C17200

1、 Classified by beryllium content

High beryllium alloy (high-strength type): beryllium content 1.6%~2.1%

China: QBe2, QBe1.9, QBe1.7
United States: C17200, C17300
Europe: CuBe2 (CW101C), CuBe2Pb (CW102C)
Japan: BPB2 (corresponding to QBe2)

Low beryllium alloy (high conductivity and thermal conductivity type): beryllium content 0.2%~0.7%

China: QBe0.6-2.5, QBe0.4-1.8, QBe0.3-1.5
United States: C17500 (beryllium cobalt copper), C17510 (beryllium nickel copper)
Europe: CuCo2Be (CW102C)
2、 Comparison Table of Domestic and Foreign Brand Names

China(GB)‌ ‌United States(ASTM)‌Europe(DIN/EN)‌Russia(GOST)  ‌Main characteristics
QBe2C17200CuBe2 (CW101C) БрБН2High strength, high elasticity, high wear resistance
QBe1.9 ---High strength and fatigue resistance
QBe1.7-CuBe1.7(CW100C)-Medium to high strength, good conductivity
QBe1.9-0.1C17300CuBe2Pb- High strength+easy to cut (lead containing)
QBe0.6-2.5C17500CuCo2Be (2.1285) БрБН0.6-2.5High conductivity, medium strength, corrosion resistance
QBe0.4-1.8C17510CuNiBe(2.0850)БрБН0.4-1.8High thermal conductivity/conductivity, stress relaxation resistance

注‌:

C17500 Be beryllium cobalt copper(Be 0.4%~0.7%,Co 2.4%~2.7%);
C17300 Corresponding in China QBe1.9-0.1(Lead improves machinability)。
3、 Special function grade
Quick cutting beryllium copper: C17300 (QBe1.9-0.1), adding lead element to improve processing efficiency.
High conductivity beryllium copper: C17500 (CuCoBe), C17510 (CuNiBe), balancing conductivity and strength.
4、 Typical application areas
High strength grade (QBe2/C17200): precision springs, bellows, aerospace fasteners.
High conductivity grade (C17500/C17510): electronic connectors, resistance welding electrodes, new energy vehicle components.
Easy cutting grade (C17300): precision instrument parts, complex structural parts.

In addition to the grades mentioned above, there are also less commonly used grades such as C17410 and C17000, all of which require solution and aging heat treatment to achieve optimal performance.

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