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70Cu-30Zn

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Published: 01 January 1990
Fig. 15 Effect of varying sintering time on properties of prealloyed 70Cu-30Zn leaded brass (nominal 1.5% Pb). Lubricant: 0.375% lithium stearate and 0.375% zinc stearate; compaction pressure: 415 MPa (30 tsi); green density: 7.3 g/cm 3 ; sintering temperature and atmosphere: 870 °C (1600 °F More
Image
Published: 01 January 2002
Fig. 39 Superimposed E -pH diagram of a 70Cu-30Zn alloy in 0.1 M NaCl. Lightly shaded area indicates the domain in which selective removal of zinc is expected in solutions free of copper ions. Intermediate shaded area indicates the domain in which both copper and zinc dissolves. Dark shaded More
Image
Published: 01 January 2002
Fig. 40 Views of a through-wall perforation of a chromium-plated α brass (70Cu-30Zn) tube removed from a potable water system due to dezincification. (a) Macroview of tube. (b) Inside diameter surface of the tube shown in (a), depicting localized green deposits at the areas of dezincification More
Image
Published: 01 December 1998
Fig. 1 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. The dark line surrounding the plug is an etching artifact. 160× More
Image
Published: 15 January 2021
Fig. 39 Superimposed potential-pH diagram of a 70Cu-30Zn alloy in 0.1 M NaCl. Lightly shaded area indicates the domain in which selective removal of zinc is expected in solutions free of copper ions. Intermediate-shaded area indicates the domain in which both copper and zinc dissolve. Dark More
Image
Published: 01 January 1997
Fig. 14 The microstructure of annealed cartridge brass (70Cu-30Zn), illustrating both grain boundaries and annealing twins. The twins are the regions with parallel sides within the grains. Source: Ref 1 More
Image
Published: 01 January 2003
Fig. 2 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line surrounding the plug is an etching artifact. Total width shown is 0.56 mm (2.2 mils). More
Image
Published: 01 December 1998
Fig. 27 The microstructure of two common brasses. (a) C26000 (cartridge brass, 70Cu-30Zn), hot rolled, annealed, cold rolled 70% and annealed at 638 °C (1180 °F), showing equiaxed grains of copper solid solution. (Some grains are twinned). 75×. (b) C28000 (Muntz metal, 60Cu-40Zn) ingot More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003132
EISBN: 978-1-62708-199-3
... pressure varies with alloy composition. C36000 (61.5Cu-3Pb-35.5Zn) requires a relatively low pressure, whereas C26000 (70Cu-30Zn) and C44300 (71.5Cu-1Sn-27.5Zn-0.06As) require the highest pressure of all brasses. Most of the coppers require an extrusion pressure intermediate between those for C26000...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006106
EISBN: 978-1-62708-175-7
... and hardness levels than sintered brass when compacted under similar conditions. For example, pressing at 550 MPa (40 tsi) results in hardness of 45 HRB for an 89Cu-9Sn-2Zn-2Fe bronze and of 90 HRH for a 70Cu-30Zn brass, respectively (after 30 min sintering at 840 °C, or 1550 °F, under dissociated ammonia...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001070
EISBN: 978-1-62708-162-7
... brass powders are available in leaded and nonleaded compositions. Commercial brass alloys range from 90Cu-10Zn to 65Cu-35Zn; however, leaded versions of 80Cu-20Zn and 70Cu-30Zn are most commonly used for the manufacture of sintered structural parts that may require secondary machining operations...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002450
EISBN: 978-1-62708-194-8
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001255
EISBN: 978-1-62708-170-2
..., sometimes with a brown cast. Alloys with compositions from 70Cu-30Zn to 80Cu-20Zn are yellow, with only slight color variations over this range. The 85Cu-15Zn alloys are darker and resemble gold. The 90Cu-10Zn alloys are darker still, with a reddish, bronze-like cast. With proper control of plating...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002411
EISBN: 978-1-62708-193-1
... with increasing cold work (b) CW, cold work; ST, solution treat Alloy Metallurgy and General Mechanical Properties Brasses Both the standard cartridge brass (C26000, 70Cu-30Zn) and the higher-strength aluminum brass (C68800) offer excellent combinations of strength and formability and are widely...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003137
EISBN: 978-1-62708-199-3
... water, low in salt content and at room temperature, is likely to produce uniform attack, but neutral or alkaline water, high in salt content and above room temperature, often produces plug-type attack. Fig. 1 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003620
EISBN: 978-1-62708-182-5
... is directly related to the stress-corrosion cracking of copper-zinc alloys ( Ref 17 ). Fig. 2 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line surrounding the plug is an etching artifact. Total...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005240
EISBN: 978-1-62708-187-0
... + 4 × 10 −10 T 2 298–805 0.86 1.13 358 805 901 16 Copper alloys Cu-Al (Al-bronze) Cu-9.7Al-4.6Fe-0.64Mn-4.6Ni C p = 0.353 + 3 × 10 −4 T − 1 × 10 −7 T 2 C p = 0.582 298–1313 1313–1773 0.442 0.582 240 1313 1350 16 Brass 70Cu-30Zn C p...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005523
EISBN: 978-1-62708-197-9
... 16 C p = 0.582 1313–1773 Brass 70Cu-30Zn C p = 0.355 + 1.36 × 10 −4 T 298–1188 0.396 0.49 164.8 1188 1228 14 C p = 1.32 + 6.75 × 10 −4 T 1188–1228 C p = 0.49 1228 ≤ T Brass 60Cu-40Zn C p = 0.354 + 1.11 × 10 −4 T T ≤ 1173 0.387...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006276
EISBN: 978-1-62708-169-6
... Cartridge brass, 70% C26000 70Cu-30Zn Annealed 357 52 133 19 55 72 HRF Hard 532 77 441 64 8 82 HRB Muntz metal C28000 60Cu-40Zn Annealed 378 55 119 17 45 80 HRF Half-hard 490 71 350 51 15 75 HRB High-lead brass C35300 62Cu-36Zn-2Pb Annealed 350 51 119 17 52...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
..., nickel-silver powder (63Cu-18Ni-17Zn-2Pb). 165× Commercial prealloyed brass and nickel-silver powders are available in leaded and nonleaded compositions. Commercial brass alloys range from 90Cu-10Zn to 65Cu-35Zn. Leaded versions of 80Cu-20Zn and 70Cu-30Zn are most commonly used for the manufacture...