Brontzea kobre-oinarritutako aleazio mota eta talde bat da, Eztainua aleazio-elementu nagusi gisa duena. Brontzearen gogortasuna eta indarra handitzen dira Eztainaren edukia handitzean. Harikortasuna ere murrizten da eztainuaren ehunekoa 5etik gorako igoerarekin. Aluminioa ere gehitzen denean (% 4tik 11ra), ondoriozko aleazioari aluminiozko brontzea deitzen zaio, korrosioarekiko erresistentzia dezente handiagoa duena. Brontzeak garestiak dira letoiekin alderatuta, metal garestia den eztainuaren presentzia dela eta.
Beste aleazio asko bezala, kobrea eta kobre-oinarritutako aleazioak oso konplexuak diren piezak bihur daitezke, harea galdaketarako etainbertsio galdaketa prozesua. Kostu etengabeko gorabeherek material hauek prezio oso sentikorrak izan ditzakete, hondakinak oso garestia bihurtuz, batez ere kontuan hartutaCNC mekanizazioaeta/edo forja zure pieza ekoizteko fabrikazio prozesu gisa. Kobre hutsa ez da normalean botatzen.
| Merkatu ezberdinetako letoi eta brontze kalifikazioa | |||||||
| Txina | Alemania | Europa | Nazioartekoa | AEB | Japonia | ||
| GB | DIN | EN | ISO | UNS | JIS | ||
| Ikurra | Ez. | Ikurra | Ez. | Ikurra | Ez. | Ez. | |
| TU2 | OF-Cu | 2.004 | Cu-OFE | CW009A | Cu-OF | C10100 | C1011 |
| - | SE-Cu | 2.007 | Cu-HCP | CW021A | - | C10300 | - |
| - | SE-Cu | 2.007 | Cu-PHC | CW020A | - | C10300 | - |
| T2 | E-Cu58 | 2.0065 | Cu-ETP | CW004A | Cu-ETP | C11000 | C1100 |
| TP2 | SF-Cu | 2.009 | Cu-DHP | CW024A | Cu-DHP | C12200 | C1220 |
| - | SF-Cu | 2.009 | Cu-DHP | CW024A | Cu-DHP | C12200 | C1220 |
| - | SF-Cu | 2.009 | Cu-DHP | CW024A | Cu-DLP | C12200 | C1220 |
| TP1 | SW-Cu | 2.0076 | Cu-DLP | CW023A | Cu-DLP | C12000 | C1201 |
| H96 | CuZn5 | 2.022 | CuZn5 | CE500L | CuZn5 | C21000 | C2100 |
| H90 | CuZn10 | 2.023 | CuZn10 | CW501L | CuZn10 | C22000 | C2200 |
| H85 | CuZn15 | 2.024 | CuZn15 | CW502L | CuZn15 | C23000 | C2300 |
| H80 | CuZn20 | 2.025 | CuZn20 | CW503L | CuZn20 | C24000 | C2400 |
| CuZn28 | |||||||
| H70 | CuZn30 | 2.0265 | CuZn30 | CW505L | CuZn30 | C26000 | C2600 |
| H68 | CuZn33 | 2.028 | CuZn33 | CW506L | CuZn35 | C26800 | C2680 |
| H65 | CuZn36 | 2.0335 | CuZn36 | CW507L | CuZn35 | C27000 | C2700 |
| H63 | CuZn37 | 2.0321 | CuZn37 | CW508L | CuZn37 | C27200 | C2720 |
| HPb63-3 | CuZn36Pb1.5 | 2.0331 | CuZn35Pb1 | CW600N | CuZn35Pb1 | C34000 | C3501 |
| HPb63-3 | CuZn36Pb1.5 | 2.0331 | CuZn35Pb2 | CW601N | CuZn34Pb2 | C34200 | - |
| H62 | CuZn40 | 2.036 | CuZn40 | CW509N | CuZn40 | C28000 | C3712 |
| H60 | CuZn38Pb1.5 | 2.0371 | CuZn38Pb2 | CW608N | CuZn37Pb2 | C35000 | - |
| HPb63-3 | CuZn36Pb3 | 2.0375 | CuZn36Pb3 | CW603N | CuZn36Pb3 | C36000 | C3601 |
| HPb59-1 | CuZn39Pb2 | 2.038 | CuZn39Pb2 | CW612N | CuZn38Pb2 | C37700 | C3771 |
| HPb58-2.5 | CuZn39Pb3 | 2.0401 | CuZn39Pb3 | CW614N | CuZn39Pb3 | C38500 | C3603 |
| - | CuZn40Pb2 | 2.0402 | CuZn40Pb2 | CW617N | CuZn40Pb2 | C38000 | C3771 |
| - | CuZn28Sn1 | 2.047 | CuZn28Sn1As | CW706R | CuZn28Sn1 | C68800 | C4430 |
| - | CuZn31Si1 | 2.049 | CuZn31Si1 | CW708R | CuZn31Si1 | C44300 | - |
| - | CuZn20Al2 | 2.046 | CuZn20Al2As | CW702R | CuZn20Al2 | C68700 | C6870 |
| QSn4-0.3 | CuSn4 | 2.1016 | CuSn4 | CW450K | CuSn4 | C51100 | C5111 |
| - | CuSn5 | 2.1018 | CuSn5 | CW451K | CuSn5 | C51000 | C5102 |
| QSn6.5-0.1 | CuSn6 | 2.102 | CuSn6 | CW452K | CuSn6 | C51900 | C5191 |
| QSn6,5-0,4 | CuSn6 | CuSn6 | C51900 | C5191 | |||
| QSn7-0.2 | CuSn8 | CuSn8 | C52100 | C5210 | |||
| QSn8-0.3 | CuSn8 | 2.103 | CuSn8 | CW453K | CuSn8 | C52100 | C5210 |
| BZn12-24 | CuNi12Zn24 | 2.073 | CuNi12Zn24 | CW403J | CuNi12Zn24 | C75700 | - |
| BZn12-26 | CuNi18Zn27 | 2.0742 | CuNi18Zn27 | CW410J | CuNi18Zn27 | C77000 | C7701 |
| BZn18-18 | CuNi18Zn20 | 2.074 | CuNi18Zn20 | CW409J | CuNi18Zn20 | C76400 | C7521 |
| - | CuNi10Fe1Mn | 2.0872 | CuNi10Fe1Mn | CW352H | CuNi10Fe1Mn | C70600 | C7060 |
| - | CuNi30Mn1Fe | 2.882 | CuNi30Mn1Fe | CW354H | CuNi30Mn1Fe | C71500 | C7150 |
| T3 | Cu-FRTP | C12500 | |||||
| TAg0.1 | CuAg0.1 | CuAg0.1 | |||||
| HPb63-0.1 | CuZn37Pb0.5 | ||||||
| HPb61-1 | CuZn39Pb0.5 | C37100 | C3710 | ||||
| HAl77-2 | CuZn20Al2 | CuZn20Al2 | C68700 | C6870 | |||
| HSn70-1 | CuZn28Sn1 | CuZn28Sn1 | C44300 | C4430 | |||
| HSn62-1 | CuZn38Sn1 | CuZn38Sn1 | C46400 | C4620 | |||
| HMn58-2 | CuZn40Mn2 | ||||||
| QAl5 | CuAl5As | CuAl5 | |||||
| QAl7 | CuAl8 | CuAl7 | C61000 | ||||
| QAl9-2 | CuAl9Mn2 | CuAl9Mn2 | |||||
| QAl10-3-1.5 | CuAl10Fe3Mn2 | C63200 | |||||
| QAl10-4-4 | CuAl10Ni5Fe4 | CuAl10Ni5Fe5 | C63020 | ||||
| QAl11-6-6 | CuAl11Ni6Fe5 | ||||||
| QBe2 | CuBe2 | CuBe2 | C17200 | C1720 | |||
| QBe1.7 | CuBe1.7 | CuBe1.7 | C17000 | C1700 | |||
| QZr0.2 | CuZr | C15000 | |||||
| QCd1 | CuCrZr | CuCd1 | C16200 | ||||
| QMg0.8 | CuMg0.7 | ||||||
| ZQSnD5-5-5 | GB-CuSn5ZnPb | GCuPb5Sn5Zn | C83600 | BCln6 | |||
| ZQSnD10-1 | GB-CuSn10 | GCuSn10P | |||||
| ZQSnD10-2 | GB-CuSn10Zn | GCuSn10Zn2 | BCln3 | ||||
| ZQAlD9-4-4-2 | GB-CuAl10Ni | GCuAl10Fe5Ni5 | C95800 | AlBCln3 | |||
| ZQAlD9-4 | GB-CuAl10Fe | GCuAl10Fe3 | C95200 | AlBCln1 | |||
ren gaitasunakHarea Galdaketaeskuz moldatua:
• Gehienezko Tamaina: 1.500 mm × 1000 mm × 500 mm
• Pisu-tartea: 0,5 kg - 500 kg
• Urteko edukiera: 5.000 tona - 6.000 tona
• Tolerantziak: Eskaera edo Estandarra
• Moldearen materialak: harea berdea galdaketa,Shell Mold Hondar Galdaketa.
Moldeatzeko makina automatikoen harea galdaketarako gaitasunak:
• Gehienezko tamaina: 1.000 mm × 800 mm × 500 mm
• Pisu-tartea: 0,5 kg - 500 kg
• Urteko edukiera: 8.000 tona - 10.000 tona
• Tolerantziak: Eskaeran.
• Moldearen materialak: Harea Berdea Galdaketa, Shell Mold Harea Galdaketa.
Materialak eskuragarriHarea Galdaketa GaldaketaRMC-n:
• Letoia, kobre gorria, brontzea edo kobrean oinarritutako beste aleazio metal batzuk: ZCuZn39Pb3, ZCuZn39Pb2, ZCuZn38Mn2Pb2, ZCuZn40Pb2, ZCuZn16Si4
• Burdina Grisa: HT150, HT200, HT250, HT300, HT350; GJL-100, GJL-150, GJL-200, GJL-250, GJL-300, GJL-350; GG10~GG40.
• Burdina Harkosia edo Burdin Nodularra: GGG40, GGG50, GGG60, GGG70, GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2; QT400-18, QT450-10, QT500-7, QT600-3, QT700-2, QT800-2;
• Aluminioa eta haien aleazioak
• Beste material batzuk zure eskakizun berezien arabera edo ASTM, SAE, AISI, ACI, DIN, EN, ISO eta GB arauen arabera.
