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Material:                                              Mallory 100 EH

 

Composition:                                       CuCoNiBe

 

Standard Analysis:                             Co            0.8 - 1.3

(in per cent by weight)                       Ni            0.8 - 1.3

                                                        Be            0.4 - 0.7

                                                        Cu            balance 

 

Description of Material

 

Age hardenable Cu - alloy with high electrical and thermal conductivity together with a very high degree of hardness and strength.

 

These properties give a considerable increase in electrode life especially in cross-wire welding applications.

 

Examples of Application:

 

-          Electrodes for cross-wire welding

-          Upsetting electrodes, electrode jaws and UP - nozzles

-          Plungers in cold chamber die casting machines

-          Nozzles for hot cannel systems

-          Inserts in plastic blow moulding and plastic injection moulding

-          Casting dies for non-ferrous metal casting

 

MECHANICAL PROPERTIES (AT 20 OC):

Condition

Hardened

Hardness (mean)

HB 10/2,5

Min 265

Tensile Strength

N/mm2

Min 750

Apparent Yield Point

N/mm2

Min 600

Elongation

%

Min 8

Modulus of Elasticity

N/mm2

135 x 103

Softening Temperature

OC

Min 480

 

PHYSICAL PROPERTIES (AT 20 OC):

 

Condition

Hardened

Specific Weight

g

cm3

8.8

Specific Heat

J

g.K

0.42

Heat Conductivity

W

m.K

20 OC ca 240

300 OC ca 260

Coefficient of Expansion

(20-200 OC)

1

K

17.2 x 10-6

Electrical Conductivity

m

Ohm.mm2

min 28

(min 48% IACS)

Electrical Conductivity

Ohm.mm2

m

0.033 - 0.05

 

 

Form of Delivery

Profiled Bar, round, flat, square bars, forging plates, discs, rings, finished parts to drawing.

 

Processing Information
Hot Working

 

Mallory 100EH can be easily hot worked at 900 - 7000C approx.  Severely oxidising protective furnace gasses should be avoided.  The forming operation should be followed by rapid cooling.

 

Cold-forming

 

Mallory 100EH can be cold-worked well in a solution heat-treated state. Perform intermediate annealing at around 8000C followed by rapid cooling.

`

Heat Treatment

 

Mallory 100EH should be solution heat-treated prior to temperature

hardening.

 

Solution heat-treating

 

15 - 60 minutes at 900 - 9600C followed by cooling in water.

Check hardness measurement: max. 110 HB

Check conductance measurement: approx. 125m/Ohm x mm2

 

Hardening: 1 - 5 hours at 460 - 5000C followed by slow cooling

 

Machining

 

It is recommended that Mallory 100EH be machined in its hardened state (e.g. turning, shaving, milling).  Ensure adequate ventilation.  When drilling it is advantageous to use drills with an extended angle of twist.

 

Joining Work

 

Mallory 100EH can be soft soldered on prepared surfaces.  Brazing with low-melting point silver fillers can also be implemented.  However, a drop in the hardness is likely when the soldering temperature cannot be limited to 4000C. Welding in accordance with the TIG method is possible but preferably in a solution heat-treated state.  Ensure good ventilation in so doing and provide additional extraction of welding fumes by suction.

 

 

Profile No.

A

Width

B

Height

C

Chamfer

D

Thickness

E

Shoulder

F

Angle

G

Angle 450

 

Kg/m

13142

38

38

 

17

 

100

 

7.36

13200

43.05

43.05

520 30'

17

5

150

5 x 450

10.7

13233

25

25

 

8

 

 

 

3.0

13946

25

20

1 x 450

 

 

200

 

3.75

14177

45

18

 

 

6

700

 

6.65

14405

16

25

1 x 450

 

 

 

 

3.56

14717

29

20

 

 

6

200

 

4.69

14718

25

16

1 x 450

 

 

 

7 x 450

3.12

15691

32.5

20

 

 

6

200

 

5.1

15825

39.7

16

 

 

8

200

10.5 x 450

4.46

 

 

 

All Mallory Alloys Group products conform to, if not exceed, the relevant standards as assured by the Quality Management System Quality Management System - ISO 9002, EN 29002, BS5750-2


© Copyright 2004 Mallory Group Limited, all rights reserved.