F.D. Sims Limited: Copper

Specification

BS 1432 - Rectangular (as below)
BS 4109 - Round Wire

Mechanical Characteristics

Annealed, half hard and hard conditions

Description	Designation	Thickness (mm)		Tensile Strength (N/mm²)		Elongation A (%)
Description	Designation	Over	Up to and including	Min.	Max.	Min.
Annealed	O	0.50	10.00	210	250	35
Half-hard	½H	0.50 1.60	1.60 10.00	250 250	- -	10 15
Hard	H	0.50 2.50 8.00	2.50 8.00 10.00	310 290 270	- - -	- 4 8

Controlled proof stress conditions

Material condition designation	Thickness (mm)		0.1% proof stress (N/mm²)
Material condition designation	Over	Up to and including	Min.	Max.
CPR1	0.80	10.00	140	200
CPR2	0.80 1.20	1.20 10.00	170 170	230 220
CPR3	0.80	10.00	220	260

Elongation requirements are not applicable to material thinner than 0.80mm when less than 12.5 mm wide.
At 20°C conductivity is between 100% and 102% I.A.C.S.

Tolerances

Width or thickness

Corner radius

Ordered width or thickness (mm)		Tolerance (mm)
Over	Up to and including	Tolerance (mm)
0.49	3.15	± 0.03
3.15	6.30	± 0.05
6.30	12.50	± 0.07
12.50	25.00	± 0.10
25.00	50.00	± 0.14

Thickness (t) (mm)		Corner radius (mm)	Tolerance on corner radius (mm)
Over	Up to and including	Corner radius (mm)	Tolerance on corner radius (mm)
0.49	1.00	0.50 t*	± 0.08
1.00	1.60	0.50	± 0.08
1.60	2.24	0.65	± 0.12
2.24	3.55	0.80	± 0.12
3.55	10.00	1.00	± 0.15
* i.e. half the thickness