Beryllium Copper 10C

Lead-freecda820 Superior Thermal Conductivity Good Strength and Toughness Excellent Corrosion Resistance Lower Beryllium Content Grade

Beryllium copper alloy with lower Be content and superior thermal conductivity over aluminum; magnesium; and steel alloys. Forms: ingot and cut bars.

Solidus

1,780°F (971°C)

Liquidus

1,990°F (1,088°C)

Density

0.311 lbs/in³ (8.62 g/cm³)

Primary Elements

Cu · Co · Be

Nominal Composition

0.65% Be, 2.55% Co, 96.8% Cu

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Product Overview

Beryllium Copper 10C is a lower-beryllium-content copper alloy that combines good strength; excellent corrosion resistance; and material toughness with thermal conductivity properties that are far superior to most aluminum; magnesium; and steel alloys. The reduced beryllium content relative to higher-Be BeCu grades makes 10C a practical choice for applications where thermal management is the primary requirement and the extreme hardness of higher-beryllium grades is not needed. The alloy’s corrosion resistance makes it suitable for use in aggressive chemical and marine environments where both structural integrity and heat dissipation are required. Beryllium copper alloys as a class require safe handling practices due to the hazardous nature of beryllium dust and fumes generated during melting; grinding; and machining. Operators must follow applicable OSHA and NIOSH beryllium exposure guidelines. Forms: 2 cut bars; 2-20 lb ingot; and 2-5 lb ingot.

Available Forms

2" Cut Bars, 2-20 Ingot, 2-5 Ingot

Product Code

4972

Technical Info

Thermal Properties

Melting Point (Solidus)1,780°F (971°C)

Melting Point (Liquidus)1,990°F (1,088°C)

Physical Properties

Density (imperial)0.311 lbs/in³

Density (metric)8.62 g/cm³

Primary ElementsCu · Co · Be

Specificationcda820

Lead FreeYes

Key Features

Superior Thermal ConductivityGood Strength and ToughnessExcellent Corrosion ResistanceLower Beryllium Content Grade

Nominal Composition

96.8% Cu
2.55% Co
0.65% Be

Frequently Asked Questions

Common technical inquiries regarding Beryllium Copper 10C

Beryllium copper alloys including the 10C grade have thermal conductivity values in the range of 100-130 W/m-K; substantially higher than most aluminum casting alloys (80-180 W/m-K for common grades) and dramatically higher than steel (15-50 W/m-K). For applications combining structural load-bearing with heat dissipation such as mold tooling; heat sinks; and thermal management components; BeCu 10C provides a balance of conductivity and strength that neither aluminum nor steel can match simultaneously.

BeCu 10C is best suited for applications where thermal conductivity is the primary driver and extreme hardness or wear resistance is secondary. Typical applications include spot welding electrodes; die inserts requiring heat extraction; and components where the alloy must conduct heat away rapidly while resisting moderate mechanical loading. Higher-Be grades (20C; 275C) are specified when maximum hardness; wear resistance; and spring properties are required such as precision molds for intricate castings and non-sparking tools.

Beryllium and its compounds are classified as human carcinogens and are subject to OSHA's beryllium standard (29 CFR 1910.1024) which establishes a permissible exposure limit (PEL) of 0.2 ug/m3 TWA. Melting operations must be conducted with local exhaust ventilation capturing fume at the source. Dry grinding and machining generate respirable beryllium dust and require respiratory protection at minimum P100 filter rating. Medical surveillance is required for workers with confirmed exposure above the action level. Solid beryllium copper in ingot or bar form poses minimal risk when handled without generating dust or fume.