A question we often hear is: “What kind of Bronze do I need?”
The tables below list the most common types of bronze alloys which we market, together with a description of their most typical uses.
If you need some advice on the type of bronze to use in a process, contact us, our technical department will be pleased to provide an answer.
Mechanical Characteristics
| Designation | Norm | Alloys corresponding to foreign unifications | Mechanical properties on castings in sand | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ASTM B 505 | BS 1400 | DIN 1705 | ISO 1338 | Bulk Density kg/dm3 | Tensile strength R N /mm2 | Load limit permanent deformation Rr (0,2) N/mm2 | Elongation A % | Brinell Hardness HB | |||
| G CU Sn10 | UNI 7013-1″ | – | PB 4 | G Cu Sn10 | Cu Sn10 | 8,78 | 240-280 | 120-150 | 12-17 | 60-75 | Details |
| G CU Sn12 | UNI 7013-2″ | – | PB 2 | G Cu Sn12 | Cu Sn10 | 8,75 | 240-290 | 130-160 | 7-12 | 80-95 | |
| B 10 | UNI 1698 | – | – | – | – | 8,78 | 240-270 | 120-150 | 12-16 | 60-75 | |
| B 14 | UNI 1698 | – | – | – | – | 8,65 | 190-250 | 135-170 | 3-5 | 85-115 | |
| B 20 | UNI 1698 | 913 | – | – | – | 8,50 | 200-240 | 150-200 | 0.5-0.15 | 120-160 | |
| B 10 Ind | – | – | – | Cu Sn8 Pb2 | 8,70 | 260-300 | 130-150 | 12-16 | 75-90 | Details | |
| Lega C | FIAT | 927 | – | – | – | 8,80 | 260-300 | 140-180 | 10-16 | 70-90 | |
| Sn12 Ni1,5 Ind | – | – | – | – | 8,80 | 240-290 | 130-180 | 6-11 | 70-85 | ||
| B 14 Ind | – | – | – | – | 8,80 | 240-290 | 130-180 | 6-11 | 70-90 | ||
| G Cu Sn10 Zn2 | UNI 7013-6″ | – | G 1 | G Cu Sn10 Zn | Cu Sn10 Zn2 | 8,70 | 240-280 | 120-140 | 12-15 | 65-80 | Details |
| G Cu Sn10 Zn2 Ni2 | UNI 7013-10″ | 925 | – | – | – | 8,75 | 240-300 | 120-150 | 11-15 | 70-85 | |
| B Zn4 | UNI 1698 | – | – | – | – | 8,70 | 240-280 | 120-140 | 12-15 | 65-80 | |
| Lega D | FIAT | – | – | – | Cu Sn12 Pb2 | 8,70 | 240-290 | 130-180 | 7-11 | 70-80 | |
| SAE 660 | SAE | 932 | – | – | – | 8,90 | 210-250 | 90-120 | 12-18 | 60-75 | Details |
| G Cu Sn3 Zn10 Pb7 | UNI 7013-9″ | – | LG 1 | – | – | 8,70 | 200-250 | 100-120 | 12-15 | 55-65 | |
| G Cu Sn5 Zn5 Pb5 | UNI 7013-8″ | 836 | LG 2 | G Cu Sn5 Zn Pb | Cu Sn5 Pb5 Zn5 | 8,90 | 210-250 | 90-120 | 12-18 | 60-75 | |
| G Cu Sn7 Zn4 Pb6 | UNI 7013-7″ | 932 | – | G Cu Sn7 Zn Pb | Cu Sn7 Pb7 Zn3 | 8,90 | 210-250 | 90-120 | 12-18 | 60-75 | |
| B Zn7 | UNI 1698 | – | – | – | – | 8,90 | 200-240 | 80-100 | 12-18 | 60-75 | |
| Rg7 | 1705 | – | – | – | 8,90 | 320-350 | 80-100 | 15-17 | 75-80 | ||
| Bs Pb8 | UNI 1698 | 934 | – | – | – | 8,90 | 180-240 | 100-140 | 7-10 | 65-75 | Details |
| G Cu Sn10 Pb10 | UNI 7013-3″ | 937 | LB 2 | G Cu Pb10 Sn | Cu Pb10 Sn10 | 9,00 | 180-230 | 80-120 | 7-12 | 60-70 | |
| B Pb12 | UNI 1698 | – | – | – | – | 9,10 | 170-220 | 80-110 | 8-14 | 55-65 | |
| G Cu Sn8 Pb15 | UNI 7013-4″ | – | LB 1 | G Cu Pb15 Sn | Cu Pb15 Sn8 | 9,20 | 160-220 | 80-110 | 5-10 | 60-70 | |
| G Cu Sn5 Pb20 | UNI 7013-5″ | – | LB 5 | G Cu Pb20 Sn | Cu Pb20 Sn5 | 9,30 | 150-200 | 60-100 | 4-8 | 45-55 | |
| G Cu Al Fe3 | UNI 5273 B148 | 1714 | – | – | – | 7,50 | 590 | 190 | 30 | 120-150 | Details |
| G Cu Al11 Fe4 | UNI 5274 B148 | 1714 | – | – | – | 7,50 | 640 | 290 | 15 | 160-210 | |
| G Cu Al11 Fe4 Ni4 | UNI 5275 B148 | 1714 | – | – | – | 7,40 | 740 | 390 | 10 | 180-230 | |
Chemical Composition
| Designation | Norm | Chemical composiotion percentage | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cu | Sn | Pb max. | Zn max. | Ni max. | Fe max. | Sb max. | S max. | P max. | Mn max. | other requirements | |||
| G CU Sn10 | UNI 7013-1″ | Resto | 9-11 | 0,8 | 0,5 | 0,7 | 0,2 | 0,2 | 0,1 | 0,05 | 0,2 | Imp. tot. es. Ni e P ≤ 1,5 | Details |
| G CU Sn12 | UNI 7013-2″ | 89-92 | 8-12 | 1 | – | 0,5 | 0,3 | 0,2 | – | 0,05 | – | idem | |
| B 10 | UNI 1698 | 89-92 | 8-12 | 1 | – | 0,5 | 0,3 | 0,2 | – | 0,05 | – | Cu + Sn ≥ 99,0 | |
| B 14 | UNI 1698 | 84-88 | 12-16 | 1 | – | 0,5 | 0,3 | 0,2 | – | 0,05 | – | Cu + Sn ≥ 98,5 | |
| B 20 | UNI 1698 | 78-81 | 18-21 | 1 | – | 0,5 | 0,3 | 0,2 | – | 0,05 | – | Cu + Sn ≥ 97,5 | |
| B 10 Ind | 85-87 | – | 2-3 | 2,5-3,5 | ≤ 0,5 | 0,3 | 0,3 | – | 0,10 | – | Sb + Fe + P ≤ 0,6 | Details | |
| Lega C | FIAT | 85-88 | 9-11 | 1-3 | 1-3 | ≤ 0,3 | 0,3 | 0,2 | 0,1 | 0,20 | 0,20 | Fe + Ni + Sb + P + S + Mn ≤ 1,0 | |
| Sn12 Ni1,5 Ind | 79-81 | 11,5-12,5 | 3-4 | 3-4 | 1,3-1,6 | 0,3 | 0,3 | – | 0,10 | – | Sb + Fe + P ≤ 0,8 | ||
| B 14 Ind | Resto | ??-12 | 3-3,6 | 3-4 | ≤ 0,5 | 0,25 | 0,35 | – | 0,05 | – | Sb + Fe + P ≤ 0,8 | ||
| G Cu Sn10 Zn2 | UNI 7013-6″ | Resto | 8,5-11 | 1,3 | 1,3 | 1 | 0,2 | 0,3 | 0,1 | 0,05 | 0,2 | Imp. tot. es. Ni + P ≤ 2,0 | Details |
| G Cu Sn10 Zn2 Ni2 | UNI 7013-10″ | Resto | 9-11 | 1 | 1,5-2,5 | 1,8-2,5 | 0,2 | 0,3 | 0,1 | 0,05 | 0,2 | Imp. tot. es. P ≤ 2,0 | |
| B Zn4 | UNI 1698 | 85-88 | 9-11 | 1 | Resto | 1 | 0,3 | 0,3 | – | 0,05 | – | Cu + Sn ≥ 95,0 | |
| Lega D | FIAT | Resto | 12-13 | 1 | 2 | 0,8-1,2 | 0,2 | 0,1 | – | 0,10-0,20 | 0,2 | Fe + Mn + Sb + P ≤ 0,5 | |
| SAE 660 | SAE | 81-85 | 6,25-7,5 | 6-8 | 2-4 | 0,5 | 0,2 | 0,35 | – | 0,15 | – | Fe + Sb + P ≤ 0,5 | Details |
| G Cu Sn3 Zn10 Pb7 | UNI 7013-9″ | Resto | 3,5 | 5-7,5 | 9-11 | 2 | 0,4 | 0,4 | 0,2 | 0,05 | 0,2 | Imp. tot. es. Ni + P ≤ 1,2 | |
| G Cu Sn5 Zn5 Pb5 | UNI 7013-8″ | Resto | 4-6 | 4-6 | 4-6 | 2 | 0,3 | 0,4 | 0,1 | 0,05 | 0,1 | idem ≤ 1,0 | |
| G Cu Sn7 Zn4 Pb6 | UNI 7013-7″ | Resto | 6-8 | 5-7 | 3-5 | 2 | 0,25 | 0,35 | 0,1 | 0,05 | 0,1 | idem ≤ 0,7 | |
| B Zn7 | UNI 1698 | 83-85 | 5-7,5 | 4 | Resto | 1 | 0,5 | 0,5 | – | 0,05 | – | Cu + Sn ≥ 90 | |
| Rg7 | Resto | 6-8 | 5-7 | 3-5 | 2 | 0,25 | 0,3 | 0,1 | 0,05 | – | Altre impurità max. 0,5 | ||
| BS Pb8 | UNI 1698 | 82-86 | 6-8 | 7-9 | 1 | 1 | 0,3 | 0,2 | – | – | 1 | Cu + Sn + Pb ≥ 97,5 | Details |
| G Cu Sn10 Pb10 | UNI 7013-3″ | Resto | 9-11 | 8,5-10,5 | 1 | 1,5 | 0,15 | 0,5 | 0,2 | 0,01 | 0,05 | Imp. tot. es. Zn + Ni + P ≤ 1,0 | |
| B Pb12 | UNI 1698 | 79-81 | 7-9 | 8-13 | 0,1 | 1 | 0,2 | 0,3 | – | – | 1 | Cu + Sn + Pb ≥ 97,5 | |
| G Cu Sn8 Pb15 | UNI 7013-4″ | Resto | 7-9 | 13-17 | 1 | 2 | 0,15 | 0,5 | 0,2 | 0,01 | 0,05 | Imp. tot. es. Zn + Ni + P ≤ 1,0 | |
| G Cu Sn5 Pb20 | UNI 7013-5″ | Resto | 4-6 | 19-23 | 1,5 | 2 | 0,15 | 0,75 | 0,2 | 0,01 | 0,05 | Imp. tot. es. Zn + Ni + Sb + P ≤ 0,5 | |
| G Cu Al Fe3 | UNI 5273 B148 | 83-89 | 0,2 | 0,05 | 0,2 | 1,5 | 2,5-4 | – | – | – | 1,5 | Al = 8,5-9,5; Si = max. 0,05 | Details |
| G Cu Al11 Fe4 | UNI 5274 B148 | 81-87 | 0,2 | 0,05 | 0,2 | 2,5 | 3-6 | – | – | – | 1 | Al = 10-11,5; Si = max. 0,05 | |
| G Cu Al11 Fe4 Ni4 | UNI 5275 B148 | 78-84 | 0,1 | 0,05 | 0,1 | 3-5,5 | 3-5 | – | – | – | 3,5 | Al = 10-11,5; Si = max. 0,05 | |