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Die-casting pistons
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Forged plates in different sizes
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Clamping bar
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Material designation SCHMELZMETALL
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HOVADUR® CB1.5
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Material designation, EN standard
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not standardized
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Material No., EN standard
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not standardized
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Material No., former DIN standard
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not standardized
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Material No., UNS system (ASTM)
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not standardized
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Classification RWMA (USA)
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Class 4
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Information about standards
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EN
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The material is not standardized.
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DIN (former)
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The material was not included in former DIN standards.
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ASTM
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The material is not standardized.
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Description of material
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HOVADUR® CB1.5 is a thermally precipitation hardenable copper alloy. In heat treated condition, the alloy shows a very
high hardness and strength combined with good values concerning electrical and thermal conductivity. This specific
combination of properties leads to excellent results if you need high wear resistance and good carrying-off of heat.
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Safety data sheet
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SCHMELZMETALL No. 07.02E (Issue 30.07.2002)
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Material properties
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Chemical composition in % of weight (guaranteed ranges)
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Be
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Co
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Ni
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Co + Ni
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Fe
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Si
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others total
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Cu
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1.4-1.6
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0-0.3
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0-0.3
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0.2-0.5
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max. 0.1
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max. 0.1
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max. 0.5
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Remainder
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Agreed properties at 20 °C (Condition: hardened)
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Hardness Brinell HB
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min. 280 *)
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Electrical conductivity
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MS/m
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min. 20
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(min. 34.5 % IACS)
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| *) In case of different opinions, hardness is calculated as the average of 3 randomly located measurings. |
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Associated properties at 20 °C (Condition: hardened)
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Tensile strength
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1)
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N/mm² (MPa)
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min. 950
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0.2% yield strength
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1)
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N/mm² (MPa)
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min. 800
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Elongation (A5)
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1)
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%
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min. 4
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| 1) Strength values will only be proved if ordered by the customer. |
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Material information (nominal values)
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Elastic modulus
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N/mm² (MPa)
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135,000
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Softening temperature
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°C
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320
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Specific weight
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g/cm³
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8.4
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Thermal conductivity
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W/mK
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180
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(Average 20 °C-300 °C)
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Thermal expansion coefficient
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x 10-6/°K
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17.0
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(Average 20 °C-300 °C)
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Melting interval
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°C
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885-1000
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Processing instructions
Hot forming
HOVADUR® CB1.5 is suitable for hot forming at temperatures of about 800–650 °C. After forming, quick cooling in water
is recommended.
Advice: After a hot forming executed by the customer, the properties of HOVADUR® CB1.5 will normally no
longer be achieved.
Cold forming
HOVADUR® CB1.5 in hardened condition is not intended for cold forming. In case, a cold forming has to be executed,
HOVADUR® CB1.5 in solution heat treated condition has to be used. After forming, as a rule, the part has to be heat
treated.
Heat treatment
A heat treatment changes the agreed properties. If a heat treatment is executed after supply of the material, we cannot
guarantee any properties.
Advice for heat treatments (they always depend to a large degree on the kind and the function of the furnace)
Solution heat treatment: 760–800 °C, about 30 minutes followed by quenching in water
Hardening: 310–340 °C, 2–5 h followed by cooling at the air
Machining
HOVADUR® CB1.5 is suitable for machining. We recommend hard metal cutting tools with positive cutting geometry.
For drilling, attention must be paid to good removal of chips. Cooling with emulsion is recommended.
In case of dry machining, this has to be done with strong suction. Outgoing air has to be cleaned by a particle
filter.
Thread moulding is possible to a limited degree. Bigger inside threads should be executed by circular thread milling.
Joining
HOVADUR® CB1.5 is suitable for soft as well as hard soldering. Concerning hard soldering (even at limited time of effect
of the temperature), a loss in hardness in the area of heating is to be expected. A very low melting silver brazing should
be used and the brazing process itself should be as short as possible. HOVADUR® CB1.5 is suited for welding. Attention
must be paid to sufficient extraction and filtering of welding fume.
Application examples
Mechanically highly strained jaws, holders and guide rails for flash butt welding and projection welding. Die casting
pistons for horizontal cold chamber casting machines for light metal casting. Mechanically moderately strained parts of
moulds for plastic injection moulds.
Documents:
| Details of the properties or application of materials are for descriptive purposes only. Confirmation of suitability with regard to specific properties or application require written agreement. |
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Product data sheet