Aluminium bronze - AB 220 Ni

(Identical or equivalent to : EN-CC 307 G, SS 5716-20, ISO-Cu Al10 Ni 5 Fe4)

Chemical composition (nom.)

• Cu 77-82 %
• Al 8,5-11 %
• Ni 4-6 %
• Fe 2,5-5 %
• Max. impurities:
  Mn 1,5 %
  Pb 0,05 %
  Zn 0,50
  Others 0,5 %

Mechanical properties - Concast

Yield strength (Rp N/mm 2 ): 300-480 N/mm2
Tensile strength (Rm N/mm 2) ): 630-790 N/mm2
Elongation in % A 5 : 12-25 %
Hardness / Brinell: 170-220 HB
(All values = Nominal values)

Mating material: Min. surface hardness 400 HB Rec. surface roughness < 1 Ra.
Machineability 40 /100 (Index, free cutting brass, CuZn39Pb3 100 /100)

Areas of use

Parts for injection moulding tools, wormwheels, guide-bushings and -plates, sparkfree tools, blade wheels, bearings exposed to shock and/or abrasion, screws and nuts, guideparts for hydraulics, valves, high pressure fittings, marine equipment etc.

Other material information

Physical properties	Value
Density, g/cm 3	7.6
Modulus of elasticity KN/mm2	127.5
Thermal conductivity W / m · K	45
Welding, brazing and soldering	Abilities
Arc-welding	Good
Oxyacetylene	Good
Brazing	Good
Soldering	Good
Glueing	Good
Shapes and forms available	Available as
Continously casted mtrl. (tubes,round solids, flats)	X
Cast material (die- or sand-cast)	X
Forged material	X
Partly or fully machined parts	X
Welding equipment (welding-wire / welding-rods)	X