Italy · UNI

CuSn7Zn4Pb7-B

UNI EN 1982 — Copper and copper alloys. Ingots and castings

Chemical composition

wt% · log scale
0.0010.010.11101001000Al0.01Cu81 – 84.5Fe0.2Ni2P0.03Pb5.2 – 8S0.08Sb0.3Si0.01Sn6.2 – 8Zn2.3 – 5
  • min – max range
  • typical value

Mechanical properties

value range by condition
Yield strength Rp0.2≥120 MPaTensile strength Rm≥260 MPaElongation A≥12 %HardnessHBCentrifugal castings +GZYield strength Rp0.2≥120 MPaTensile strength Rm≥230 MPaElongation A≥12 %HardnessHBPermanent mould castings +GMYield strength Rp0.2≥120 MPaTensile strength Rm≥230 MPaElongation A≥15 %HardnessHBSand castings +GSYield strength Rp0.2≥120 MPaTensile strength Rm≥260 MPaElongation A≥12 %HardnessHBround bars

Chemical composition

ElementminmaxSimilarRemarks
Al0.01
Cu8184.5Analysis value for Cu may contain Ni.
Fe0.2
Ni2
P0.03
Pb5.28
S0.08
Sb0.3
Si0.01
Sn6.28
Zn2.35

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Centrifugal castings +GZ≥120≥260≥12HB ≥70
Permanent mould castings +GM≥120≥230≥12HB ≥60
Sand castings +GS≥120≥230≥15HB ≥60
round bars≥120≥260≥12HB ≥70