All data is for information only------(Home)
	PRODUCT DATA of CDA 170

Material

CDA 170

Chemical Composition

1.8% Be, 0.3% Co + Ni, Rem. Cu

	EXPERIENCE IN PRACTICE

Equivalent Designations

ASTM B194; BS 2870; BS 2873; CB101; CDA170; Beryllium-Copper 1.8%

Space Experience

Good

	PHYSICAL PROPERTIES

Specific Gravity

8.25

	ELECTRICAL PROPERTIES

Electrical Conductivity

18 to 38 %IACS Remark:Solution treated has the lowest conductivity.

	THERMAL PROPERTIES

Thermal Conductivity

84 to 150 W/m.K

Thermal Expansion Coefficient

17 μstrain/°C

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

Atmospheric Corrosion

Generally good

Stress Corrosion Status

High Resistance to SCC: Table 1 Remark:High resistance only when solution treated/work hardened, then precipitation hardened Data Quality: Design Data

	SPECIAL RECOMMENDATIONS

Special Recommendations

The alloy is age-hardeneable and the heat treatment is as follows: - solution treat 760 - 820°C – Water Quench - age 315 - 350°C – Air Cool · Solution treatment may be from 10 to 30 minutes for light materials (i.e. wire or strip), extending up to several hours for bulky castings. Precipitation hardening normally requires 2 hours at 310°C or 30 minutes at 350°C. · Fabrication methods involving either welding, brazing or high temperature soldering should be performed whilst the alloy is in the soft condition and then followed by the solution and ageing treatments.

Lessons Learned

Do use non-spark tooling including chisels, spanners, shovels etc