JPH0368734A - High-strength copper alloy for conductive use with excellent bending resistance - Google Patents
High-strength copper alloy for conductive use with excellent bending resistanceInfo
- Publication number
- JPH0368734A JPH0368734A JP20439989A JP20439989A JPH0368734A JP H0368734 A JPH0368734 A JP H0368734A JP 20439989 A JP20439989 A JP 20439989A JP 20439989 A JP20439989 A JP 20439989A JP H0368734 A JPH0368734 A JP H0368734A
- Authority
- JP
- Japan
- Prior art keywords
- strength
- weight
- alloy
- bending resistance
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 28
- 229910000881 Cu alloy Inorganic materials 0.000 title abstract description 12
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 abstract description 24
- 229910052738 indium Inorganic materials 0.000 abstract description 8
- 229910052718 tin Inorganic materials 0.000 abstract description 7
- 229910052759 nickel Inorganic materials 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 229910000765 intermetallic Inorganic materials 0.000 description 7
- 230000035939 shock Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001000 nickel titanium Inorganic materials 0.000 description 4
- 230000001376 precipitating effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910017876 Cu—Ni—Si Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035936 sexual power Effects 0.000 description 1
- 229910021484 silicon-nickel alloy Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Conductive Materials (AREA)
Abstract
Description
本発明は、銅合金に係り、特に、例えば自動車用電線の
導体等として用いた場合に、導電率の低下を招くことな
く５機械的衝撃に対し高強度で。
圧着端子部における引張り及び屈曲によるＷＲｍを減少
させることができ、かつ軽量化を図ることのできる耐屈
曲性に優れた導電用高力鋼合金に関する。The present invention relates to a copper alloy, and in particular, when used as a conductor for electric wires for automobiles, etc., it has high strength against mechanical shock without causing a decrease in electrical conductivity. The present invention relates to a conductive high-strength steel alloy with excellent bending resistance that can reduce WRm due to tension and bending in a crimp terminal part, and can reduce weight.
一般に自動車は、マニアル・トランス・ミッション車と
、オート・トランス・ミッション車（ＡＴ車）とがある
、これら自動車の自動車用電線の導体としては軟＠線が
主として用いられている。
近年、ＡＴ車の普及に伴ってキャブレタから電子燃料噴
射装置への転換が図られ、各種計器類等車載装置の電子
化が図られている。このような車載装置の電子化等に伴
い、自動車内における電気、電子配線回路の数が著しく
増加し、自動車における自動車用電線の占積空間の増加
及び、この自動車用電線による重量の増加を招いている
。
しかし、自動車の車体は、燃費の向上の点から軽量であ
ることが望ましく、自動車用電線の使用量の増加は、車
体の軽量化に逆行することとなる。
そこで、車体の軽量化を図る上から、自動車内における
電気、電子配線回路に用いられる自動車用電線において
は、その軽量化及び自動車内における占積空間の狭小化
の要望が強まっている。
従来は、自動車用電線の中で例えばマイクロコンピュー
タを含む微小電流回路に用いられる電線においては、リ
ード線等極細い径の電線で充分であるにも拘らず、自動
車走行中に生じる振動衝撃は甚だしく大きいものである
ため、充分な機械的強度を有していないと接合部がはず
れたり、断線を生じ、自動車走行に支障を生じたりする
ことがある。このようなことから従来、充分な機械的強
度を確保するため、電気的な必要径より大きな径の導体
を用いている。
しかし、充分な機械的強度を確保するため、電気的な必
要径より大きな径の導体を用いていたのでは、自動車内
における電気、電子配線回路に用いる自動車用電線の軽
量化及び占積空間の狭小化を図ることはできない。
そこで、自動車用電線を軽量化するため導体外径を小さ
くしても機械的強度を確保することのできる硬銅線が検
討されたが、硬銅線は材質的に伸びが著しく小さい。こ
のため、硬銅線を用いて端子間を圧着接合しても、自動
車走行中に生じる振動衝撃等の外力による機械的負荷が
接合部に加わると、この接合部が損傷してしまうことが
ある。
このように硬銅線を用いて端子間を圧着接合すると、端
子圧着箇所が機械的な弱点部となり外的衝撃によって断
線を生じやすく信頼性に乏しいという結果を招来してい
る。
また、自動車用電線の使用重量を小さくすることは、導
体径を小さくすることによって実現が可能であるが、従
来の如き軟鋼線にあっては、導体外径を小さくすると機
械的強度が低下してしまう。
そこで、近年、導体外径を小さくしても、機械的強度を
確保でき、比較的良好な繰返し屈曲強度及び導電性を有
する銅合金として、Ｃｕ −Ｎ ｉ −Ｔｉ合金、Ｃｕ
−Ｎｉ−Ｓｉ合金等が考案されている。In general, there are two types of automobiles: manual transmission vehicles and automatic transmission vehicles (AT vehicles). Soft wires are mainly used as conductors for the electric wires of these vehicles. In recent years, with the spread of automatic transmission vehicles, carburetors are being replaced with electronic fuel injection devices, and in-vehicle devices such as various instruments are becoming electronic. Along with the computerization of in-vehicle devices, the number of electrical and electronic wiring circuits in automobiles has increased significantly, leading to an increase in the space occupied by automobile electric wires in automobiles and an increase in the weight of these automobile electric wires. I'm there. However, it is desirable for automobile bodies to be lightweight in order to improve fuel efficiency, and an increase in the amount of automobile electric wires used goes against the weight reduction of automobile bodies. Therefore, in order to reduce the weight of the vehicle body, there is an increasing demand for reducing the weight of automotive electric wires used for electrical and electronic wiring circuits in the vehicle and reducing the space occupied within the vehicle. Conventionally, among the electric wires for automobiles, for example, for electric wires used in minute current circuits including microcomputers, extremely thin diameter electric wires such as lead wires are sufficient, but the vibration shock that occurs while the car is running is severe. Because they are large, if they do not have sufficient mechanical strength, the joints may come off or the wires may break, which may impede the running of the vehicle. For this reason, conventionally, in order to ensure sufficient mechanical strength, a conductor with a diameter larger than the electrically required diameter has been used. However, in order to ensure sufficient mechanical strength, conductors with a diameter larger than the required electrical diameter have been used to reduce the weight of automotive electric wires used for electrical and electronic wiring circuits in automobiles, and to save space. It is not possible to narrow the scope. Therefore, in order to reduce the weight of electric wires for automobiles, hard copper wires were considered that can ensure mechanical strength even if the outer diameter of the conductor is reduced, but hard copper wires have extremely low elongation due to their material nature. For this reason, even if the terminals are crimped and bonded using hard copper wire, the joint may be damaged if mechanical loads are applied to the joint due to external forces such as vibrations and shocks that occur while the car is running. . When terminals are crimped and bonded using hard copper wire in this manner, the terminal crimped portion becomes a mechanical weak point, which is likely to break due to external impact, resulting in poor reliability. In addition, reducing the weight of automotive electric wires can be achieved by reducing the diameter of the conductor, but with conventional mild steel wires, reducing the outer diameter of the conductor reduces the mechanical strength. I end up. Therefore, in recent years, Cu-Ni-Ti alloy, Cu
-Ni-Si alloys and the like have been devised.
【発明が解決しようとするＨＭ）
このＣｕ−Ｎｉ−Ｔｉ合金は、Ｎｉ−Ｔｉの金属間化合
物を、Ｃｕマトリックス中に析出させることにより、導
電性を大きく低下させずに、引張り強さを向上させたも
のである。しかしながら、このＣｕ−Ｎｉ−Ｔｉ合金は
、自動車走行中に生じる振動衝撃等の外力による機械的
負荷に耐え得るに充分な引張り強さを得ることができな
いという問題点を有している。
また、Ｃｕ−Ｎｉ−Ｓｉ合金は、Ｎｉ−Ｔｉの金属間化
合物を、Ｃｕマトリックス中に析出させることにより、
導電性を大きく低下させずに、引張り強さを向上させた
ものである。しかしながら、このＣｕ −Ｎ ｉ −Ｓ
ｉ合金は、自動車走行中に生じる振動衝撃等の外力に
よる機械的負荷に耐え得るに充分な引張り強さを得るこ
とができないという問題点を有している。
本発明は、導電率の低下を招くことなく１機械的衝撃に
対し高強度で、圧着端子部における引張り及び屈曲によ
る断線を減少させることができ、かつ軽量化を図ること
のできる耐屈曲性に優れた導電用高力鋼合金を提供する
ことを目的としている。
【課題を解決するための手段】
上記目的を達成するために、本発明の耐屈曲性に優れた
導電用高力銅合金においては、Ｎｉを２．０〜４．ＯＮ
量％、Ｓｉを０．４〜１．０重量％。
Ｉｎを０．０５〜０．３重量％、Ｓｎを０．０５〜０．
３重量％を含有し、残部を基本的にＣ、ｕによって構成
したものである。
すなわち、上記目的を達成するために、本発明の耐屈曲
性に優れた導電用高力銅合金においては、Ｃｕマトリッ
クス中にＮｉとＳｉの金属間化合物を析出させ、これに
よって導電性を大幅に低下させることをなくして引張り
強さを向上し、Ｉｎ、Ｓｎを加えることにより、引張り
強さをさらに高めたものである。
本発明において、Ｎｉの含有量を２．０〜４゜０重量％
とじたのは、Ｎｉが２．０重量％未満では、Ｓｉとの金
属間化合物の析出による引張強さの向上が小さく、また
、Ｎｉが４．０重量％を超えると、Ｃｕ母相中へ固溶す
るＮｉが多くなり、導電性を著しく損なうためである。
また１本発明において、Ｓｉの含有量を０．４〜１．０
重量％としたのは、Ｓｉが０．４重量％未満では、Ｎｉ
との金属間化合物の析出による引張強さの向上が小さく
、また、Ｓｉが１．０重量％を超えると、Ｃｕ母相中に
固溶するＳｉが多くなり、導電性が低下するためである
。
さらに、本発明において、Ｉｎの含有量を０゜０５〜０
．３重量％としたのは、Ｉｎが０．０５重量％未満では
、引張強さを向上させる効果が小さく、０．３重量％を
超えるとＣｕ母相中に固溶するＩｎが多くなり、導電性
を著しく低下させるからである。
さらにまた、本発明において、Ｓｎの含有量を０．０５
〜０．３重量％としたのは、Ｓｎが０゜０５重量％未満
では、引張強さを向上させる効果が小さく、Ｓｎが０．
３重量％を超えると導電性を大きく低下させるからであ
る。[HM to be solved by the invention] This Cu-Ni-Ti alloy improves tensile strength without significantly reducing conductivity by precipitating a Ni-Ti intermetallic compound in a Cu matrix. This is what I did. However, this Cu--Ni--Ti alloy has a problem in that it cannot obtain sufficient tensile strength to withstand mechanical loads due to external forces such as vibration shocks that occur during driving of an automobile. In addition, the Cu-Ni-Si alloy is produced by precipitating a Ni-Ti intermetallic compound in the Cu matrix.
It has improved tensile strength without significantly reducing conductivity. However, this Cu-Ni-S
The i-alloy has a problem in that it cannot obtain sufficient tensile strength to withstand mechanical loads due to external forces such as vibration shocks generated during driving of a car. The present invention has high strength against mechanical shock without causing a decrease in conductivity, can reduce disconnection due to tension and bending in the crimp terminal part, and has bending resistance that can reduce weight. The purpose is to provide high strength steel alloys with excellent electrical conductivity. [Means for Solving the Problems] In order to achieve the above object, the high strength copper alloy for electrical conduction with excellent bending resistance of the present invention has a Ni content of 2.0 to 4. ON
% by weight, 0.4 to 1.0% by weight of Si. In is 0.05 to 0.3% by weight, and Sn is 0.05 to 0.0% by weight.
It contains 3% by weight, and the remainder is basically composed of C and u. That is, in order to achieve the above object, in the high-strength copper alloy for electrical conduction with excellent bending resistance of the present invention, an intermetallic compound of Ni and Si is precipitated in the Cu matrix, thereby significantly improving the electrical conductivity. The tensile strength is improved without decreasing the strength, and the tensile strength is further increased by adding In and Sn. In the present invention, the Ni content is 2.0 to 4.0% by weight.
The reason for this conclusion is that when Ni is less than 2.0% by weight, the improvement in tensile strength due to the precipitation of intermetallic compounds with Si is small, and when Ni exceeds 4.0% by weight, it is difficult to improve the tensile strength by precipitation of intermetallic compounds with Si. This is because a large amount of Ni becomes solid solution, which significantly impairs conductivity. In addition, in the present invention, the Si content is 0.4 to 1.0.
The reason for the weight % is that if Si is less than 0.4 weight %, Ni
This is because the improvement in tensile strength due to the precipitation of intermetallic compounds with Cu is small, and if Si exceeds 1.0% by weight, a large amount of Si dissolves in the Cu matrix, resulting in a decrease in electrical conductivity. . Furthermore, in the present invention, the In content is set to 0°05 to 0.
．． The reason why In is set at 3% by weight is that if In is less than 0.05% by weight, the effect of improving tensile strength will be small, and if it exceeds 0.3% by weight, a large amount of In will be dissolved in the Cu matrix, resulting in poor conductivity. This is because it significantly reduces sexual performance. Furthermore, in the present invention, the Sn content is set to 0.05
The reason why Sn is set at 0.3% by weight is because if Sn is less than 0.05% by weight, the effect of improving tensile strength is small.
This is because if it exceeds 3% by weight, the conductivity will be greatly reduced.
【作用１
上記のように構成された耐屈曲性に優れた導電用高力銅
合金を用いると、導電率は、従来の高強度高導電性鋼合
金に比してやや向上することができ、４６％ｌＡＣ３前
後の導電率を有することができる。
また、上記のように構成された耐屈曲性に優れた導電用
高力鋼合金を用いると、引張強さは、硬銅の約１．７倍
と飛躍的強さを有し、従来の高強度高導電性銅合金に比
しても、著しく向上することができ、耐屈曲性を持たせ
ることができる。
さらに、上記のように構成された耐屈曲性に優れた導電
用高力鋼合金を用いると伸びは、軟鋼より小さくなるが
、硬銅に比して５倍以上の伸びを有しており、軟鋼と同
等の繰返し屈曲強度を得ることができる。さらに、伸び
は、従来の高強度高導電性鋼合金に比しても、低下する
ことがない。
そして、上記した理由から本発明のように構成された耐
Ｂ＃性に優れた導電用高力鋼合金を自動車の自動車用電
線の導体等として用いた場合に、自動車用電線の導体に
適した特性を得ることができ、導体外径の小型化に対す
る機械的強度の確保と端子圧着箇所での引張荷重及び屈
曲による断線を減少させることができる。したがって、
上記のように構成された耐屈曲性に優れた導電用高力銅
合金を電子機器内配線用電線の導体、半導体のリード材
等として用いると好適である。
以上の点から明確なように、上記のように構成された耐
屈曲性に優れた導電用高力鋼合金を例えば自動車用電線
の導体等として用いた場合に、機械的衝撃に対して高強
度で、しかも電気的特性において高導電性を有し、かつ
導線の小径化が行なわれ、自動車用電線の軽量化する方
向に働く。
【実施例】
以下、本発明の実施例について説明する。
本発明の実施例として、不活性ガス雰囲気に保たれた溶
解炉で、黒鉛粒被覆下にて銅を溶解した後、Ｎｉ、Ｉｎ
、Ｓｎを純金属、Ｓｉを母合金の形態で添加し、均一な
溶湯を得、これを、連続鋳造により、第１表に示す如き
組成の２０ｍφの鋳造棒を作製した。これらを冷間圧延
、伸線により３．２８１φにした後、不活性ガス雰囲気
中約９゜０℃で１時間、加熱保持後、水冷して溶体化処
理を施した。その後、１．Ｏｘφまで伸線し、さらに不
活性ガス雰囲気中約４７０℃で６時間の時効処理を行な
い、引張強さ、伸び、導電率、繰返し屈曲強度を測定し
た。比較例も同様の製造方法によったものである。
なお、屈曲試験は、第１図に示す如く、治具１に供試材
２を挟持し、他端を２ｋｇの引張荷重Ｗを加えた状態で
第１図図示（Ａ）→（Ｂ）→（Ｃ）→（Ｄ）と左右９０
’曲げを１回として破断するまで、繰返し行ない、その
回数を繰返し屈曲強度とした。
第１表には、本発明に係る耐屈曲性に優れた導電用高力
鋼合金の特徴を明確にするために、実施例と合わせて、
比較例及び従来例の組成、特性値が示しである。
なお、比較例の合金恥４、＆５は、組成がＣｕ、Ｎｉ、
Ｓｉ、Ｉｎ、Ｓｎと本発明と同一であるが、各組成の含
有量が本発明とは異なっている。
第１表の実施例（Ｎ住１〜Ｎａ ５ ）と比較例（Ｎａ
ｌ〜＆５）との比較から明らかな如く、本発明によると
、Ｎｉ−８ｉの金属間化合物を銅マトリクス中に析出さ
せることにより、導電率を大幅に低下させることなく、
引張強さを向上させることができる。
さらに、本発明によると、Ｃｕ母相中にＩｎ、Ｓｎを固
溶させているため、このＣｕ母相中へのＩｎ、ｓｎの固
溶により、導電率の幾分の低下は生じるが、引張強さの
より一層の向上を図ることができる。この導電率は、銅
マトリクス中に固溶した合金元素Ｉｎ、Ｓｎにより比較
例（Ｎａｌ）に比して低下は有るが、約４６％ｌＡＣ３
を確保し、繰返し屈曲強度は、軟鋼より優れ、引張強さ
は、硬銅より格段向上させることができる。
このように、本発明に係る耐屈曲性に優れた導電用高力
銅合金は、硬銅と比較すると、約１．７倍と格段に優れ
た引張強さを有しており、導電率は低下するが、添加元
素の一部を析出させることにより、その低下を約４６％
ｌＡＣ３と極力抑え、伸びは、軟鋼より小さくなるも、
硬銅の５倍以上有り、繰返し屈曲強度は、極めて良好な
軟鋼よりも優れている。[Effect 1] By using the high-strength conductive copper alloy with excellent bending resistance configured as described above, the conductivity can be slightly improved compared to conventional high-strength and high-conductivity steel alloys, and 46 It can have a conductivity of around %lAC3. In addition, by using the conductive high-strength steel alloy with excellent bending resistance constructed as described above, the tensile strength is approximately 1.7 times that of hard copper, which is dramatically higher than that of conventional high-strength, high-strength steel. Compared to conductive copper alloys, it can be significantly improved and has bending resistance. Furthermore, if a conductive high-strength steel alloy with excellent bending resistance is used, the elongation will be smaller than that of mild steel, but it will have an elongation more than five times that of hard copper. Equivalent cyclic bending strength can be obtained. Furthermore, elongation is not reduced compared to conventional high strength, high conductivity steel alloys. For the above-mentioned reasons, when the conductive high-strength steel alloy with excellent B# resistance constructed as in the present invention is used as a conductor for an automobile electric wire, it is possible to obtain characteristics suitable for the conductor of an automobile electric wire. This makes it possible to ensure mechanical strength while reducing the outer diameter of the conductor, and to reduce tensile load and wire breakage due to bending at terminal crimping locations. therefore,
It is suitable to use the high-strength conductive copper alloy having excellent bending resistance as described above as a conductor for wiring in electronic equipment, a lead material for semiconductors, and the like. As is clear from the above points, when the conductive high-strength steel alloy with excellent bending resistance configured as described above is used as a conductor of electric wires for automobiles, for example, it has high strength against mechanical shock, In addition, it has high conductivity in terms of electrical properties, and the diameter of the conductor wire can be reduced, which contributes to the weight reduction of automotive electric wires. [Examples] Examples of the present invention will be described below. As an example of the present invention, after melting copper under graphite grain coating in a melting furnace maintained in an inert gas atmosphere, Ni, In
, Sn in the form of a pure metal and Si in the form of a master alloy were added to obtain a uniform molten metal, which was continuously cast to produce a 20 mφ cast rod having the composition shown in Table 1. These were cold-rolled and wire-drawn to a diameter of 3.281 mm, heated and maintained at about 9°C for 1 hour in an inert gas atmosphere, and then cooled with water to undergo solution treatment. After that, 1. The wire was drawn to Oxφ, and then subjected to aging treatment at about 470° C. for 6 hours in an inert gas atmosphere, and its tensile strength, elongation, electrical conductivity, and repeated bending strength were measured. Comparative examples were also produced using the same manufacturing method. The bending test was carried out by holding the specimen 2 between the jig 1 and applying a tensile load W of 2 kg to the other end, as shown in Fig. 1 (A) → (B) → (C) → (D) and left and right 90
'Bending was repeated once until it broke, and the number of times it was bent was defined as the repeated bending strength. In order to clarify the characteristics of the high-strength conductive steel alloy with excellent bending resistance according to the present invention, Table 1 shows, together with Examples,
The compositions and characteristic values of comparative examples and conventional examples are shown. In addition, alloys 4 and 5 of comparative examples have compositions of Cu, Ni,
Although Si, In, and Sn are the same as those of the present invention, the content of each composition is different from that of the present invention. Examples (N 1 to Na 5 ) and comparative examples (Na 5 ) in Table 1
As is clear from the comparison with 1~&5), according to the present invention, by precipitating the Ni-8i intermetallic compound in the copper matrix, the electrical conductivity can be improved without significantly reducing the conductivity.
Tensile strength can be improved. Furthermore, according to the present invention, since In and Sn are dissolved in the Cu matrix, although some decrease in electrical conductivity occurs due to the solid solution of In and Sn in the Cu matrix, the tensile strength Strength can be further improved. Although this electrical conductivity is lower than that of the comparative example (Nal) due to the alloying elements In and Sn dissolved in the copper matrix, it is approximately 46%lAC3
The cyclic bending strength is superior to mild steel, and the tensile strength is much higher than that of hard copper. As described above, the high-strength copper alloy for conductive use with excellent bending resistance according to the present invention has a tensile strength that is approximately 1.7 times superior to that of hard copper, and the conductivity is However, by precipitating some of the added elements, the decrease can be reduced by about 46%.
Although the lAC3 is kept as low as possible and the elongation is smaller than mild steel,
It has more than 5 times the strength of hard copper, and its repeated bending strength is superior to that of mild steel, which has extremely good strength.
以上説明したように、本発明によれば、硬銅と比較する
と、約１．７倍と格段に優れた引張強さを有し、導電率
は低下するが、添加元素の一部を析出させることにより
、その低下を約４６％ｌＡＣ３と極力抑えることができ
る。
また、本発明によれば、伸びは、軟鋼より小さくなるが
、硬銅の５倍の伸びを有しており、繰返し屈曲強度の極
めて良好な軟鋼よりも優れた繰返し屈曲強度を得ること
ができる。
したがって、本発明によれば、自動車用電線として用い
る導体に適した特性を得ることができ、導体外径の小型
化に対する機械的強度の確保と端子圧着箇所での引張荷
重及び屈曲による断線を減少させることができる。
また１本発明によれば、電子機器内配線用電線の導体、
半導体のリード材等として用いるにも好適である。As explained above, according to the present invention, compared to hard copper, it has a significantly superior tensile strength of about 1.7 times, and although the electrical conductivity decreases, some of the added elements can be precipitated. By doing so, the decrease can be suppressed to about 46% lAC3 as much as possible. Further, according to the present invention, the elongation is smaller than that of mild steel, but it has an elongation five times that of hard copper, and it is possible to obtain a cyclic flexural strength superior to that of mild steel, which has an extremely good cyclic flexural strength. . Therefore, according to the present invention, it is possible to obtain characteristics suitable for a conductor used as an electric wire for automobiles, to ensure mechanical strength while reducing the outer diameter of the conductor, and to reduce tensile load and wire breakage due to bending at terminal crimping points. can be done. According to one aspect of the present invention, a conductor of an electric wire for wiring inside an electronic device,
It is also suitable for use as a lead material for semiconductors.
第１図は、本発明の実施例及び比較例の屈曲試験方法を
示す図である。FIG. 1 is a diagram showing a bending test method of an example of the present invention and a comparative example.
Claims (1)
１．０重量％、Ｉｎを０．０５〜０．３重量％、Ｓｎを
０．０５〜０．３重量％を含有し、残部が基本的にＣｕ
からなる耐屈曲性に優れた導電用高力鋼合金。(1) Ni: 2.0 to 4.0% by weight, Si: 0.4 to 4.0% by weight
1.0% by weight, 0.05 to 0.3% by weight of In, 0.05 to 0.3% by weight of Sn, and the balance is basically Cu.
A high-strength conductive steel alloy with excellent bending resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20439989A JPH0368734A (en) | 1989-08-07 | 1989-08-07 | High-strength copper alloy for conductive use with excellent bending resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20439989A JPH0368734A (en) | 1989-08-07 | 1989-08-07 | High-strength copper alloy for conductive use with excellent bending resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0368734A true JPH0368734A (en) | 1991-03-25 |
| JPH0527699B2 JPH0527699B2 (en) | 1993-04-22 |
Family
ID=16489900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20439989A Granted JPH0368734A (en) | 1989-08-07 | 1989-08-07 | High-strength copper alloy for conductive use with excellent bending resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0368734A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551676A (en) * | 1991-08-20 | 1993-03-02 | Yazaki Corp | Conductive high strength copper alloy with excellent elongation properties |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0530793U (en) * | 1991-09-30 | 1993-04-23 | 埼玉日本電気株式会社 | Electronic watch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6386838A (en) * | 1986-09-30 | 1988-04-18 | Furukawa Electric Co Ltd:The | Copper alloy for semiconductor lead |
| JPS63109133A (en) * | 1986-10-23 | 1988-05-13 | Furukawa Electric Co Ltd:The | Copper alloy for electronic equipment and its production |
| JPS63149345A (en) * | 1986-12-15 | 1988-06-22 | Nippon Mining Co Ltd | High strength copper alloy having high electrical conductivity and improved heat resistance |
| JPS63262448A (en) * | 1987-04-21 | 1988-10-28 | Nippon Mining Co Ltd | Production of copper alloy having excellent peeling resistance of tin or tin alloy plating |
-
1989
- 1989-08-07 JP JP20439989A patent/JPH0368734A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6386838A (en) * | 1986-09-30 | 1988-04-18 | Furukawa Electric Co Ltd:The | Copper alloy for semiconductor lead |
| JPS63109133A (en) * | 1986-10-23 | 1988-05-13 | Furukawa Electric Co Ltd:The | Copper alloy for electronic equipment and its production |
| JPS63149345A (en) * | 1986-12-15 | 1988-06-22 | Nippon Mining Co Ltd | High strength copper alloy having high electrical conductivity and improved heat resistance |
| JPS63262448A (en) * | 1987-04-21 | 1988-10-28 | Nippon Mining Co Ltd | Production of copper alloy having excellent peeling resistance of tin or tin alloy plating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0551676A (en) * | 1991-08-20 | 1993-03-02 | Yazaki Corp | Conductive high strength copper alloy with excellent elongation properties |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0527699B2 (en) | 1993-04-22 |
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