WO1989008725A1 - Brass alloy and process of making and use of same - Google Patents
Brass alloy and process of making and use of same Download PDFInfo
- Publication number
- WO1989008725A1 WO1989008725A1 PCT/SE1989/000125 SE8900125W WO8908725A1 WO 1989008725 A1 WO1989008725 A1 WO 1989008725A1 SE 8900125 W SE8900125 W SE 8900125W WO 8908725 A1 WO8908725 A1 WO 8908725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brass
- alloy
- brass alloy
- composition
- alloy according
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/04—Alloys based on copper with zinc as the next major constituent
Definitions
- the present invention relates to a brass alloy according to the preamble of patent claim 1. Furthermore, it relates to a method for the preparation of such a brass alloy according to the preamble of the first method claim as well as a use of said brass alloy.
- Brass exists in two technically interesting main forms, ⁇ -brass containing more than 62 % Cu and (Y + ⁇ , -brass containing 54-62 % Cu.
- 0 + p -brass is located at 64.5 % Cu at the point of solidification of the alloy and at 62 % Cu at lower tempe ⁇ ratures.
- a slow cooling or a special heat treatment it is possible, if the precentage is above 62 % Cu, to recrys- tallize all the metal to the ⁇ -phase.
- the 0 ⁇ -phase has a face-centered cubic structure, while the ⁇ -phase has a body-centered cubic structure.
- Such alloy metals are i.a. Sn, Pb, Fe, Ni, Mn, Si and Al, which may be included in various types of special brass.
- the corrosion resistance of brass is reduced when the zinc content increases.
- This de ⁇ terioration may in certain cases manifest itself as a se ⁇ lective elimination or corrosion of the zinc, a so called dezincification.
- Said inhibitors may be plain or combined, e.g. P, As, Sb, Bi and/or Si.
- the C -phase is the only phase which can be inhibited by means of said elements. (b -brass and the f ⁇ -phase of a t* I -mix ⁇ ture are attacked firstly, since they are less electro ⁇ positive than the (X -phase.
- brass can be subjected to other types of corrosion, such as stress corrosion and intergranular corrosion. Agents which prevent one type of corrosion are not always effective against other types of corrosion.
- Si does not display any particular negative characteristics and also results in stress corrosion resistance.
- the percentages of Cu, Mn, Pb, Si, As and Zn are those percentages, which were regarded as fixing the characte ⁇ ristics of the prepared alloy.
- the percentages of the re ⁇ maining elements Al, Fe, Ni, Sb, and Sn were values for a maximum admixture without any disturbing secondary effects.
- said elements were fundamentally undesirable impuri ⁇ ties, which however could be put up with if present in the above-stated limited amount.
- the reason why said elements existed inApplicant's previous alloy is that brass to a great extent is made of brass scrap having a varying and partly unknown composition. By putting up with or tolera ⁇ ting more elevated impurity contents less expensive raw materials (scrap) could be used and consequently a re ⁇ Jerusalem cost of production be attained.
- Said previous alloy could solely be used when die-casting.
- By admixing lead it obtained excellent characteristics when machined in cutting processes. It displayed an ex ⁇ cellent stress corrosion resistance as well as a satis ⁇ factory but limited dezincification resistance. However, it displayed an intergranular corrosion in a sulphate- containing water.
- An additional purpose was to obtain a more generally use ⁇ ful brass- alloy, which can be not only die-casted but als chilled, extruded to bars, tubes and profiles as well as warm-pressed. Additional desirable characteristics were satisfactory cold forming characteristics as well as main ⁇ tained sat sfactory characteristics when subjected to cut ting operations.
- Brass having the lower Cu-content is solely dezincificati resistant subsequent to a heat-treatment.
- the Cu-percen- tage ought to be larger than 62.5 % also when a heat-trea ment is used.
- US 2 007 008 relates to an alloy having the following composi ⁇ tion: 61 % Cu, 0.4-0.8 % Si, 0.2-0.4 % Fe, the rest zinc. '
- this alloy inevitably contains a certain amount of -phase and consequently is not dezincification re ⁇ sistant.
- DE 2 353 238 relates to an alloy having 95-63 % Cu, 0.04- 0.25 % P, 0.07-0.7 % Fe and the rest Zn. Also, as much as 0.1 %, preferably 0.020-0.035 % As, can be added. As has been mentioned above, the phosphorus admixture yields a too hard product as far as many applications are concerned and there is a danger of smelting problems when a P-content is to be adjusted. An As-content results in an intergranu ⁇ lar corrosion.
- the alloy according to the present invention may contain as much as 0.05 % Al, 0.8 %, preferably 0.5 %, Sn, 0.04 % P, 0.02 % Bi and 0.05 % Sb without a deterioration as regards the corrosion re ⁇ sistance and/or other characteristics of the alloy.
- a sulphate- containing water merely traces of As ought to exist, say 0-0.020 % As, while in case this risk is smaller as much as 0.020 % As can be tolerated.
- Supp ⁇ liers of brass from smelting plants do not warrant smaller amounts than 0.020 % As.
- An admixture of As of up to 0.020 % is regarded as an As-free material according to existing regulations.
- An additional purpose of the invention is to propose a method of producing a brass alloy of the type mentioned above, which enables one to use cheap brass scrap as a raw material.
- Fe By admixing Fe as a master alloy, in which Fe as well as Cu are cubicly face-centered, Fe will mainly be evenly dist ⁇ ricited as finely divided Fe-atoms in the matrix of the ma ⁇ terial.
- Fe is added as Fe-metal, the iron will ea ⁇ gerly combine with e.g. Si, B, Al and P in the melt and form intermetallic inclusions with them.
- the corrosion-inhibiting elements are combined and consequent ⁇ ly they can no longer contribute to an increase in the cor ⁇ rosion resistance.
- coarse, hard inclusions of this kind impair the cuttability due to the tool wear.
- the alloy was moderately resistant to a dezincification.
- An alloy with the following composition was prepared: 64.9 % Cu, 32.3 % Zn, 1.7 % Pb, 0.033 % As, 0.54 % Si, 0.054 % Fe, 0.36 % Ni and 0.05 % Sn.
- This alloy has a satisfactory dezincification resistance, intergranular corrosion resistance and stress resistance. It is suitable for die-casting, extrusion, chill casting as well as warm-pressing.
- Fe is to be added in the form of a ferro-copper alloy
- the bars and the tubes respectively are pressed, heat-trea- ted at 550 + 25°C for 2 h, hard-drawn and reeled. It is easy to handle the bar products in a cutting operation and they have a satisfactory dezincification resistance, stress corrosion resistance as well as intergranular corrosion resistance.
- This alloy has a satisfactory dezincification resistance, stress corrosion resistance and intergranular corrosion resistance and it is easy to handle it in a cutting ope ⁇ ration.
Abstract
A brass alloy having the composition 63.5 - 66.5 % Cu+Ni, 0 - 0.8 % Ni, 0.5 - 3.0 % Pb, 0.3 - 1.0 % Si, preferably 0.65 - 0.80 % Si, 0.07 - 0.80 % Fe, preferably 0.10 - 0.50 % Fe and the rest mainly Zn. This alloy is resistant to dezincification, stress corrosion and intergranular corrosion. It can be formed by die-casting, chill casting, warm-pressing and hot-forging. Also, an alloy having a more limited composition 64.5 - 65.5 % Cu+Ni, 0-0.8 % Ni, 1.5 - 2.2 % Pb, 0.65 - 0.80 % Si, 0.10 - 0.20 % Fe and the rest essentially Zn can be extruded to bars, tubes and profiles. When the alloy is smelted, possible admixtures of Fe ought to be done in the form of a ferro-copper alloy.
Description
Brass alloy and process of making and use of same. The present invention relates to a brass alloy according to the preamble of patent claim 1. Furthermore, it relates to a method for the preparation of such a brass alloy according to the preamble of the first method claim as well as a use of said brass alloy.
Brass exists in two technically interesting main forms, θ -brass containing more than 62 % Cu and (Y + β, -brass containing 54-62 % Cu. The dividing line between O - and
0 + p -brass is located at 64.5 % Cu at the point of solidification of the alloy and at 62 % Cu at lower tempe¬ ratures. By a slow cooling or a special heat treatment it is possible, if the precentage is above 62 % Cu, to recrys- tallize all the metal to the ζ -phase. The 0< -phase has a face-centered cubic structure, while the β -phase has a body-centered cubic structure. By adding other alloy me¬ tals said dividing lines can be moved somewhat. Such alloy metals are i.a. Sn, Pb, Fe, Ni, Mn, Si and Al, which may be included in various types of special brass.
As compared to pure copper the corrosion resistance of brass is reduced when the zinc content increases. This de¬ terioration may in certain cases manifest itself as a se¬ lective elimination or corrosion of the zinc, a so called dezincification. In order to counteract this one or seve¬ ral inhibitors have been added to dezincification resistant brasses or special brasses. Said inhibitors may be plain or combined, e.g. P, As, Sb, Bi and/or Si. The C -phase is the only phase which can be inhibited by means of said elements. (b -brass and the fό -phase of a t* I -mix¬ ture are attacked firstly, since they are less electro¬ positive than the (X -phase.
Also, brass can be subjected to other types of corrosion, such as stress corrosion and intergranular corrosion. Agents which prevent one type of corrosion are not always
effective against other types of corrosion.
The rest of the characteristics and possible disadvantages of the above-mentioned dezincification inhibitors may be summarized as follows:
P yields a hard brass; difficulties in adjusting the exact composition when smelting, due to pickling; As may cause an intergranular corrosion in a sulphate- containing water;
Sb and Bi yield a brittle material and are usually avoided; and
Si does not display any particular negative characteristics and also results in stress corrosion resistance.
It has been held so far that other possibly existing alloy metals do not influence the power of dezincification resis¬ tance. Particularly, it has been held that Fe in this con¬ nection is an undesirable impurity and one has endeavoured to keep the iron content as low as possible. In those in¬ stances when iron in brass alloys has been included in a considerable amount, the purpose has been to increase the mechanical strength. In DIN 1785 for_ example a few brass alloys are mentioned as suitable corrosion resistant mate¬ rials for condenser tubes in salt water, having the follow¬ ing percentages as to Cu, As, P and Fe:
CuZn30 Cu 70 (69-71 Cu) As+P 0.020-G.035
Fe < 0.05
CuZn20Al Cu 78 (76-79 Cu) As 0.020-0.035
Fe < 0.07
As+P < 0.035
CuZn28Sn Cu 71 (70-72.5 Cu) As < 0.020-0.035
Fe < 0.07
As+P < 0.035
Applicant.has proposed in SE-C-194 177 a dezincification resistant alloy having the following composition:
Cu 64.5-66.5 percentage by weight Al ^ 0.05 weight-% Mn 0.4-0.7 percentage by weight Fe ^ 0.5 weight-% Pb 1.8-2.5 percentage by weight Ni ^ 0.2 weight-% Si 0.5-0.8 percentage by weight Sb ^ 0.05 weight-% As 0.02-0.08 percentage by weight Sn ^ 0.8 weight-%
Zn the rest
The percentages of Cu, Mn, Pb, Si, As and Zn are those percentages, which were regarded as fixing the characte¬ ristics of the prepared alloy. The percentages of the re¬ maining elements Al, Fe, Ni, Sb, and Sn were values for a maximum admixture without any disturbing secondary effects. Thus, said elements were fundamentally undesirable impuri¬ ties, which however could be put up with if present in the above-stated limited amount. The reason why said elements existed inApplicant's previous alloy is that brass to a great extent is made of brass scrap having a varying and partly unknown composition. By putting up with or tolera¬ ting more elevated impurity contents less expensive raw materials (scrap) could be used and consequently a re¬ duced cost of production be attained.
Said previous alloy could solely be used when die-casting. By admixing lead it obtained excellent characteristics when machined in cutting processes. It displayed an ex¬ cellent stress corrosion resistance as well as a satis¬ factory but limited dezincification resistance. However, it displayed an intergranular corrosion in a sulphate- containing water.
Consequently, the purpose of the developmental work, which resulted in the present invention, was to obtain a brass alloy having an intergranular corrosion resistance and an improved dezincification resistance as well as a maintained satisfactory stress corrosion resistance.
5
An additional purpose was to obtain a more generally use¬ ful brass- alloy, which can be not only die-casted but als chilled, extruded to bars, tubes and profiles as well as warm-pressed. Additional desirable characteristics were satisfactory cold forming characteristics as well as main¬ tained sat sfactory characteristics when subjected to cut ting operations.
We discovered then that the above-mentioned satisfactory characteristics could be obtained with an alloy having th following composition:
Cu 62.0-67.0 preferably 63.5-66.5 weight-%
Pb 0.5- 3.0 1.5-2,5
Si 0.3- 0.8 0.35-0.65
Fe 0.07- 0.8 0.10-0.50
Zn the rest
As much as 0.8 % Ni can replace Cu.
Brass having the lower Cu-content is solely dezincificati resistant subsequent to a heat-treatment. The Cu-percen- tage ought to be larger than 62.5 % also when a heat-trea ment is used.
In the developmental work it was assumed in the introduc¬ tory phase that a maximum iron content of 0.5 % Fe could be tolerated. It was not assumed that there was a lower limit value. However, we found, when an accidental de¬ livery of practically iron free raw materials was made, that a certain iron percentage is of crucial importance t the attainment of a dezincification resistance. The.pre¬ pared alloy was completely devoid of a dezincification re sistance. Continued developmental work proved that a sa¬ tisfactorydezincification resistance and additional desi¬ rable characteristics were attained, provided the brass
alloy had the above-mentioned composition.
Previously corrosion resistant brass alloys having a Fe content as an active component have been proposed. US 2 007 008 relates to an alloy having the following composi¬ tion: 61 % Cu, 0.4-0.8 % Si, 0.2-0.4 % Fe, the rest zinc. ' However, this alloy inevitably contains a certain amount of -phase and consequently is not dezincification re¬ sistant.
DE 2 353 238 relates to an alloy having 95-63 % Cu, 0.04- 0.25 % P, 0.07-0.7 % Fe and the rest Zn. Also, as much as 0.1 %, preferably 0.020-0.035 % As, can be added. As has been mentioned above, the phosphorus admixture yields a too hard product as far as many applications are concerned and there is a danger of smelting problems when a P-content is to be adjusted. An As-content results in an intergranu¬ lar corrosion.
None of the known alloys contains lead and consequently they are not suitable for applications in cutting proces¬ ses.
In addition to the elements mentioned the alloy according to the present invention may contain as much as 0.05 % Al, 0.8 %, preferably 0.5 %, Sn, 0.04 % P, 0.02 % Bi and 0.05 % Sb without a deterioration as regards the corrosion re¬ sistance and/or other characteristics of the alloy. In view of the risk of an intergranular corrosion in a sulphate- containing water merely traces of As ought to exist, say 0-0.020 % As, while in case this risk is smaller as much as 0.020 % As can be tolerated. As normally exists as an impurity in the brass raw materials in small amounts. Supp¬ liers of brass from smelting plants do not warrant smaller amounts than 0.020 % As. An admixture of As of up to 0.020 % is regarded as an As-free material according to existing
regulations.
An additional purpose of the invention is to propose a method of producing a brass alloy of the type mentioned above, which enables one to use cheap brass scrap as a raw material.
This purpose is attained according to the invention in the following way. Initially pure copper, which the alloy possibly will contain, is melted and subsequently the brass scrap raw materials are added and melted and suitably final¬ ly possibly zinc. Subsequently the charge is analyzed and additional amounts of alloy metals are added to obtain the desired composition, Fe being added in the form of a master alloy, a ferro-copper alloy. A suitable ferro-copper alloy on the market contains 10 % Fe.
By admixing Fe as a master alloy, in which Fe as well as Cu are cubicly face-centered, Fe will mainly be evenly dist¬ ributed as finely divided Fe-atoms in the matrix of the ma¬ terial. In case Fe is added as Fe-metal, the iron will ea¬ gerly combine with e.g. Si, B, Al and P in the melt and form intermetallic inclusions with them. In that way the corrosion-inhibiting elements are combined and consequent¬ ly they can no longer contribute to an increase in the cor¬ rosion resistance. Also, coarse, hard inclusions of this kind impair the cuttability due to the tool wear.
The invention will be explained in more detail by a few examples.
Example 1
An alloy designed for die-casting according to SE 194 177 was prepared with the following composition:
65.0 % Cu, 30.2 % Zn, 2.3 % Pb, 0.47 % Sn, 0.080 % As,
0.42 % Ni, 0.24 % Fe, 0.48 % Mn, 0.72 % Si, 0.01 % Al,
and <0.001 % P.
The alloy was moderately resistant to a dezincification.
Example 2
An alloy with the following composition was prepared: 64.9 % Cu, 32.3 % Zn, 1.7 % Pb, 0.033 % As, 0.54 % Si, 0.054 % Fe, 0.36 % Ni and 0.05 % Sn.
Despite the large percentage of As (0.033 %) (compared with the DIN-standard mentioned above) a pronounced de¬ zincification of the alloy occurred.
Example 3
A representative example of the alloy according to the in¬ vention is:
64.6 % Cu, 31.2 % Zn, 2.0 % Pb, 0.70 % Si, 0.015 % As, 0.27 % Fe, 0.66 % Sn, 0.38 % Ni, 0.001 % Mn and 0.04 % Al. This alloy has a satisfactory dezincification resistance, intergranular corrosion resistance and stress resistance. It is suitable for die-casting, extrusion, chill casting as well as warm-pressing.
Example 4
A specification as to bars and tubes according to the in¬ vention:
COMPOSITION
Cu+Ni Pb Si Sn Fe Mn Ni Al Zn % % % % % % % % % Min 64.0 1.5 0.65 - 0.10 -
Max 65.5 2.2 0.80 0.50 0.20 0.15 0.80 0.05 the rest
Fe is to be added in the form of a ferro-copper alloy
(FeCu) .
The rest of the impurities: max. 0.50 %.
PRODUCTION
The bars and the tubes respectively are pressed, heat-trea-
ted at 550 + 25°C for 2 h, hard-drawn and reeled. It is easy to handle the bar products in a cutting operation and they have a satisfactory dezincification resistance, stress corrosion resistance as well as intergranular corrosion resistance.
Example 5
A specification as to the composition of billets designed for die-casting, chill casting or warm-pressing according to the invention.
Cu+Ni Pb Si Sn Fe Mn Ni Al Zn % % % % % % % % %
Min 63 . 5 1. 5 0 . 65 - 0 . 25 -
Max 65.0 2.2 0.80 0.80 0.50 0.15 0.80 0.05 the rest
The rest of the impurities: max. 0.50 %
This alloy has a satisfactory dezincification resistance, stress corrosion resistance and intergranular corrosion resistance and it is easy to handle it in a cutting ope¬ ration.
Claims
1. A lead-containing brass alloy, c h a r a c t e r i z e d by the composition 62.0-67.0 % Cu+Ni, preferably 63.5- 66.5 % Cu+Ni, 0-0.8 % Ni, 0.5-3.0 % Pb, preferably 1.5-
2.5 % Pb, 0.3-1.0 % Si, preferably 0.65-0.80 % Si, 0.07- 0.80 % Fe, preferably 0.10-0.50 % Fe and the rest mainly Zn.
2. A brass alloy according to patent claim 1, c h a ¬ r a c t e r i z e d in that it also contains 0-0.05 % Al, 0-0.8 % Sn, preferably 0-0.5 % Sn, 0-0.04 % P, 0-0.02 % Bi and/or 0-0.05 % Sb as well as not more than 0.50 % re¬ maining elements.
3. A brass alloy according to patent claim 1 or 2, c h a r a c t e r i z e d in that it also contains 0-0.02 % As, preferably 0-0.02 % As.
4. A brass alloy according to patent claim 1, c h a ¬ r a c t e r i z e d by the composition 64.5-65.5 % Cu+ Ni, 0-0.8 % Ni, 1.5-2.2 % Pb, 0.65-0.80 % Si, 0.10-0.20 % Fe and the rest mainly Zn.
5. A brass alloy according to claim 4, c h a r a c t e ¬ r i z e d in that it also contains 0-0.50 % Sn, 0-0.15 %Mn, 0-0.80 Ni, 0-0.05 % Al as well as not more than 0.50 % remaining elements.
6. A process for the preparation of an alloy according to any of patent claims 1-5, c h a r a c t e r i z e d in that initially pure copper, which may be an ingredient, is smelted and subsequently the brass scrap raw materials are added and smelted and possibly zinc, subsequent to which the charge is analyzed and additional amounts of alloy metals are added, until the desired composition is attained, Fe being added in the form of a master alloy, as a ferro-copper alloy.
7. A use of the brass alloy according to any of patent claims 1-5, c h a r a c t e r i z e d in that it is used to prepare brass parts, designed to be employed in a cor¬ rosive environment at the risk of dezincification, stress corrosion and/or intergranular corrosion.
8. A use of a brass alloy according to patent claim 6, c h a r a c t e r i z e d in that a brass alloy having a composition according to any of patent claims 1-3 is used to prepare brass parts by die-casting, chill casting, extrusion or warm-pressing.
9. A use of a brass alloy according to patent claim 7, c h a r a c t e r i z e d in that a brass alloy having a composition according to patent claim 4 or 5 is used to prepare bar, tube or profile products.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8800931-1 | 1988-03-16 | ||
| SE8800931A SE8800931D0 (en) | 1988-03-16 | 1988-03-16 | BRASS ALLOY AND SET TO MAKE IT SAME |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1989008725A1 true WO1989008725A1 (en) | 1989-09-21 |
Family
ID=20371698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SE1989/000125 WO1989008725A1 (en) | 1988-03-16 | 1989-03-13 | Brass alloy and process of making and use of same |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3437289A (en) |
| SE (1) | SE8800931D0 (en) |
| WO (1) | WO1989008725A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0572959A1 (en) * | 1992-06-02 | 1993-12-08 | HETZEL METALLE GmbH | Brass alloy |
| US5961749A (en) * | 1997-05-30 | 1999-10-05 | Diehl Stiftung & Co. | Use of a brass alloy for sanitary pipes |
| WO2001014606A1 (en) * | 1999-08-26 | 2001-03-01 | Tour & Andersson Hydronics Ab | Die-casting brass alloy which is resistant to dezincification |
| EP1273671A1 (en) * | 2001-07-05 | 2003-01-08 | Diehl Metall Stiftung & Co. KG | Dezincification resistant copper-zinc alloy and method for producing the same |
| EP1598436A1 (en) * | 2002-12-27 | 2005-11-23 | Sumitomo Light Metal Industries Limited | Metal material and method for production thereof |
| CN105264101A (en) * | 2013-06-05 | 2016-01-20 | 三越金属株式会社 | Copper-based alloy |
| CN114318053A (en) * | 2021-12-15 | 2022-04-12 | 中船重工西安东仪科工集团有限公司 | Rapid melting method of common brass |
| CN115261668A (en) * | 2022-06-30 | 2022-11-01 | 宁波金田铜业(集团)股份有限公司 | Brass alloy strip and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768595B2 (en) * | 1991-11-14 | 1995-07-26 | 三宝伸銅工業株式会社 | Corrosion resistant copper base alloy material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2007008A (en) * | 1934-02-19 | 1935-07-02 | Phelps Dodge Copper Prod | Copper zinc alloy containing silicon and iron |
| DE1458322A1 (en) * | 1962-09-19 | 1968-10-17 | Nordiske Kabel Traad | Resistant to salt water, plastically deformable alloy made of brass or aluminum-brass |
| DE2040031A1 (en) * | 1969-08-18 | 1971-03-11 | Alcuma Establishment | Copper-zinc alloy for pressure-tight castings |
| DE2353238B1 (en) * | 1973-10-24 | 1975-02-06 | Wieland Werke Ag | Use of a phosphorus-containing brass alloy |
-
1988
- 1988-03-16 SE SE8800931A patent/SE8800931D0/en unknown
-
1989
- 1989-03-13 AU AU34372/89A patent/AU3437289A/en not_active Abandoned
- 1989-03-13 WO PCT/SE1989/000125 patent/WO1989008725A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2007008A (en) * | 1934-02-19 | 1935-07-02 | Phelps Dodge Copper Prod | Copper zinc alloy containing silicon and iron |
| DE1458322A1 (en) * | 1962-09-19 | 1968-10-17 | Nordiske Kabel Traad | Resistant to salt water, plastically deformable alloy made of brass or aluminum-brass |
| DE2040031A1 (en) * | 1969-08-18 | 1971-03-11 | Alcuma Establishment | Copper-zinc alloy for pressure-tight castings |
| DE2353238B1 (en) * | 1973-10-24 | 1975-02-06 | Wieland Werke Ag | Use of a phosphorus-containing brass alloy |
Non-Patent Citations (4)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN, Vol. 126, No. C 249; & JP,A,59 118 842, publ. 09-07-84. * |
| PATENT ABSTRACTS OF JAPAN, Vol. 8, No. 15 (C-206); & JP,A,58 181 839, publ. 24-10-83. * |
| PATENT ABSTRACTS OF JAPAN, Vol. 8, No. 19(C-207); & JP,A,58 185 738, publ. 29-10-1983. * |
| PATENT ABSTRACTS OF JAPAN, Vol. 8, No. 236; & JP,A,59 118 840, publ. 09-07-84. * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0572959A1 (en) * | 1992-06-02 | 1993-12-08 | HETZEL METALLE GmbH | Brass alloy |
| US5961749A (en) * | 1997-05-30 | 1999-10-05 | Diehl Stiftung & Co. | Use of a brass alloy for sanitary pipes |
| US6787101B1 (en) | 1999-08-26 | 2004-09-07 | Tour & Andersson Ab | Die-casting brass alloy which is resistant to dezincification |
| WO2001014606A1 (en) * | 1999-08-26 | 2001-03-01 | Tour & Andersson Hydronics Ab | Die-casting brass alloy which is resistant to dezincification |
| EP1273671A1 (en) * | 2001-07-05 | 2003-01-08 | Diehl Metall Stiftung & Co. KG | Dezincification resistant copper-zinc alloy and method for producing the same |
| DE10132055C2 (en) * | 2001-07-05 | 2003-12-11 | Diehl Metall Stiftung & Co Kg | Dezincification-resistant copper-zinc alloy and process for its production |
| DE10132055A1 (en) * | 2001-07-05 | 2003-01-23 | Diehl Metall Stiftung & Co Kg | Dezincification-resistant copper-zinc alloy and process for its production |
| EP1598436A1 (en) * | 2002-12-27 | 2005-11-23 | Sumitomo Light Metal Industries Limited | Metal material and method for production thereof |
| EP1598436A4 (en) * | 2002-12-27 | 2007-08-22 | Sumitomo Light Metal Ind | Metal material and method for production thereof |
| CN105264101A (en) * | 2013-06-05 | 2016-01-20 | 三越金属株式会社 | Copper-based alloy |
| CN105264101B (en) * | 2013-06-05 | 2017-11-14 | 三越金属株式会社 | Acid bronze alloy |
| CN114318053A (en) * | 2021-12-15 | 2022-04-12 | 中船重工西安东仪科工集团有限公司 | Rapid melting method of common brass |
| CN114318053B (en) * | 2021-12-15 | 2022-10-18 | 中船重工西安东仪科工集团有限公司 | Rapid melting method of common brass |
| CN115261668A (en) * | 2022-06-30 | 2022-11-01 | 宁波金田铜业(集团)股份有限公司 | Brass alloy strip and preparation method thereof |
| CN115261668B (en) * | 2022-06-30 | 2023-02-28 | 宁波金田铜业(集团)股份有限公司 | Brass alloy strip and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| SE8800931D0 (en) | 1988-03-16 |
| AU3437289A (en) | 1989-10-05 |
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