Chemical Composition
Beryllium: 1.80-2.00%
Cobalt plus nickel: 0.20% Min.
Cobalt + nickel + iron: 0.6% Max.
Copper: Balance
Physical Properties (heat treated)
Electrical conductivity (% IACS): 22-25
Modulus of elasticity (psi): 18.5 x 106
Mechanical Properties (heat treated)
| Temper (1,000 psi) |
1/4 HT |
1/2 HT |
| Tensile strength: |
175 Min. |
185 Min. |
| Yield strength .2% offset: |
150 Min. |
160 Min |
Stainless Steel
Stainless steel is an economical alternative to beryllium copper for shielding applications where high attenuation is not required. It does not have the electrical conductivity of BeCu and is stiffer. Mechanical considerations generally limit the use of stainless steel to low profile strips and twisted contacts. Items are identified by SS in the notes.
Material Specifications
Stainless Steel
Type 301 Stainless steel possesses good heat and corrosion resistance.
AISI 301 Analysis
C: .15 Max.
Mn: 2.00 Max.
Si: .750 Max.
P: .040 Max.
S: .030 Max.
Cr: 16.00/18.00
Ni: 6.00/8.00
Materials