copper alloys

softening temperatures
                      softens thermalC el.c str.    hard
                        °C     W/mK   MS/m   MPa     HB@20 100 200 300 400
CuAl               :   1000?   320    46  540         150  150 150 150 150    rod
CuCr1Zr,     CW106C:    500    320    46  380..470    180  160 140 120 100    rod,board
CuCoNiBe     CW103C:    480    250    28  720..820    250  245 225 200 170
CuNi2SiCr    CW111C:    480    200    22  650..750                            rod,sheet
CuBe2        CW101C:    300    120    15  1200..1300  380  380 350 300 150    rod,strip,sheet


CW111C may be softening at 300'c?

http://www.zmrzlik.cz/sl-med.htm


most common:
brass CuZn37, CW508


Bikar-Metalle: bulk sales, companies-only, 100 euro minimum order
http://www.bikar.cz/c/med/tyce-kruhove
have 7mm CW106C rods in offer

CuCr1Zr, CW106C

[ref]
[ref] - rods 6mm,8mm
[ref] - rods 8+ mm
rods, boards
for all sorts of spot-weld electrodes, 
CuCr0.8Zr0.08
high hardness, high strength, high conductivities, machinable
conduct. 75% copper, 43-50 MS/m
thermal cond. 320 W/mK
hardness HB 180@20'c, 160@100'c, 140@200'c, 120@300'c, 100@400'c, 80@500'c, 60@600'c, starts annealing at 400'c (copper at 200..250'c)

loses strength quite above 400'c

CuBe2, CW101C

[ref]
[ref]
sheets, strips, rods
for metal injection moulds, springs
springy, high-strength, hard
conductivity 22% copper
thermal cond. 113 W/mK
tensile 1206 MPa, yield 820 MPa, elong. 5%

rapidly loses strength above 350'c

CuNiBe, CW110C

[ref]
cond. 40+% copper, 25 MS/m
for welding electrodes, clamps
thermal cond. 210 W/mK(20'c), 280(200'c), 320(300'c)
tensile 800-950, yield 680+
electrical cond. falls with temperature
hardness HB 245@20'c, 240@100'c, 220@200'c, 190@300'c

CuCo2Be, CW104C

[ref]
sheets, strips, rods

CuCo1NiBe, CW103C

[ref]
[ref]
rods
for welding electrodes, clamps
cond. 40% copper, 25 MS/m
thermal cond. 210@20'c, 280@200'c, 320@300'c
hardness HB 250@20'c, 245@100'c, 225@200'c, 200@300'c, 170@400'c
anneals to soft above 400-500'c

CuAl, class A2/2

[ref]
rods
0.8% Al, 1.5% Al2O3, dispersion strengthened copper
for welding electrodes, EDM tools
cond. 82% copper, 46 MS/m
thermal cond. 320@20'c
tensile 540, yield 470
hardness HB 150, holds up to 600'c, then slooow droop, annealing-resistant to 1000'c

CuNi2Si, CW111C

[ref]
sheets, rods

CuNi2SiCr, CuNi3Si, CuNi7Si2Cr

alternatives to CuBe2, for metal casting moulds 
https://www.google.cz/url?sa=i&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjTqa_Nj7LiAhVB6KQKHUZuC7MQ5TV6BAgBEAg&url=http%3A%2F%2Fwww.conductivity-app.org%2Fdownload-alloy-pdf%2F11&psig=AOvVaw3ZN4YYfsIkSarRpcvWwG-3&ust=1558716953521251