C72900 Introduction

Copper alloys are of many types. The addition of various other elements provides each alloy its distinct characteristics. The addition of nickel to a copper alloy improves strength and corrosion resistance. Copper nickel alloys are also called cupronickel alloys.

The following datasheet discusses the chemical composition and properties of copper UNS C72900.

其他名稱

Equivalent material to UNS C72900 copper alloy is ASTM B740.

製造

  • 焊接 – Soldering, seam welding, spot welding, butt welding, coated metal arc welding, brazing, gas shielded arc welding are all excellent methods. Oxyacetylene welding can also be used.
  • 鍛造 – The hot forging temperature for copper UNS C72900 alloy ranges between 649 and 871°C (1200 and 1600°F).
  • Hot working – Copper UNS C72900 alloy has good hot working abilities.
  • 冷加工 – Copper UNS C72900 alloy has excellent cold working properties.
  • 退火 – Copper UNS C72900 alloy is annealed at temperatures 824ºC (1515ºF).

類別:

化學成分

The chemical composition of UNS C72900 copper alloy is outlined in the following table.

元素
(1,2)(3)(4)
Min (%)7.514.5
Max (%)雷姆0.028.50.500.5015.50.150.300.10
(1) Cu + Sum of Named Elements 99.7% min.
(2) Cu value includes Ag.
(3) 0.005% Pb max. for hot rolling.
(4) Ni value includes Co.

Mechanical Properties *

形式脾氣Temper Code抗拉強度
(ksi)
YS-0.2% Offset
(ksi)
YS-0.5% Ext
(ksi)
YS-0.05% Offset伸長
(%)
1/2 Hard and Spinodal Hardened (1/2 TS)TS02145 Min for Standard125 Min for Standard3 Typ
1/4 Hard and Spinodal Hardened (1/4 TS)TS01130 Min for Standard105 Min for Standard4 Typ
3/4 Hard and Spinodal Hardened (3/4 TS)TS03155 Min for Standard135 Min for Standard2 Typ
Hard and Spinodal HardenedTS04165 Min for Standard145 Min for Standard2 Typ
Mill-hardened Temper, TM – 1/2 HardTM02105 Min for Standard90 Min for Standard80 Min for Standard15 Typ
Mill-hardened Temper, TM – 1/2 HardTM0095 Min for Standard75 Min for Standard70 Min for Standard22 Typ
Mill-hardened Temper, TM – HardTM04115 Min for Standard105 Min for Standard95 Min for Standard10 Typ
Mill-hardened Temper, TM – XHMS SpringTM08150 Min for Standard140 Min for Standard125 Min for Standard2 Typ
Mill-hardened Temper, TM -XHM – Extra HardTM06130 Min for Standard120 Min for Standard105 Min for Standard6 Typ
Solution Heat TreatedTB0064 Min for Standard24 Min for Standard32 Typ
Solution Heat Treated and Cold Worked: 1/2 HardTD0285 Min for Standard8 Typ
Solution Heat Treated and Cold Worked: 1/4 HardTD0175 Min for Standard50 Min for Standard18 Typ
Solution Heat Treated and Cold Worked: 3/4 HardTD0395 Min for Standard80 Min for Standard3 Typ
Solution Heat Treated and Cold Worked: HardTD04100 Min for Standard85 Min for Standard
Spinodal Hardened-Low Strength (ATLS)TX00120 Min for Standard95 Min for Standard6 Typ
* Measured at room temperature, 68°F (20°C).

物理性質

Melting Point – Liquidus°F2039
Melting Point – Solidus°F1742
Densitylb/cu in. at 68°F0.323
比重8.94
Electrical Conductivity% IACS at 68°F7.8 (1)
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F17
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F)9.1
Specific Heat CapacityBtu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tensionksi18500
Modulus of Rigidityksi7500
(1)Aged condition.

製造性能

技術適應性
焊接優秀的
釬焊優秀的
氧乙炔焊接好的
氣體保護電弧焊優秀的
塗層金屬電弧焊優秀的
點焊優秀的
縫焊優秀的
對焊優秀的
冷加工能力優秀的
熱成型能力好的

常見的製造工藝

No fabrication process properties for this alloy

熱性能

治療最低限度*最大*
退火1515
熱工作溫度12001600
* 溫度以華氏度測量。

典型用途

產品分類產品原因類別原因
電氣連接器電導率(電)電導率
連接器電導率(熱)導熱係數
連接器耐腐蝕性能耐腐蝕性能
連接器耐腐蝕性能Resistant to Oxidation
連接器成型特性成型性
連接器機械性能高彈性模量
連接器機械性能非常高的強度
連接器熱性能抗應力鬆弛
Contacts電導率(電)電導率
Contacts電導率(熱)導熱係數
Contacts耐腐蝕性能耐腐蝕性能
Contacts耐腐蝕性能Corrosion Resistance to Fresh Water
Contacts耐腐蝕性能Corrosion Resistance to Salt Water
Contacts耐腐蝕性能Resistant to Oxidation
Contacts成型特性成型性
Contacts機械性能高彈性模量
Contacts機械性能非常高的強度
Contacts熱性能抗應力鬆弛
Controls電導率(電)電導率
Controls電導率(熱)導熱係數
Controls耐腐蝕性能耐腐蝕性能
Controls耐腐蝕性能Corrosion Resistance to Salt Water
Controls機械性能高強度
Miniaturized Sockets耐腐蝕性能耐腐蝕性能
Miniaturized Sockets成型特性成型性
Miniaturized Sockets機械性能高彈性模量
Miniaturized Sockets機械性能非常高的強度
Relay Elements電導率(電)電導率
Relay Elements電導率(熱)導熱係數
Relay Elements耐腐蝕性能耐腐蝕性能
Relay Elements耐腐蝕性能Resistant to Oxidation
Relay Elements成型特性成型性
Relay Elements機械性能高彈性模量
Relay Elements機械性能非常高的強度
Relay Elements熱性能抗應力鬆弛
Switches電導率(電)電導率
Switches電導率(熱)導熱係數
Switches耐腐蝕性能耐腐蝕性能
Switches耐腐蝕性能Corrosion Resistance to Salt Water
Switches機械性能高強度
工業的彈簧耐腐蝕性能耐腐蝕性能
彈簧耐腐蝕性能Resistant to Oxidation
彈簧成型特性成型性
彈簧機械性能高彈性模量
彈簧機械性能非常高的強度
彈簧熱性能抗應力鬆弛
金屬絲耐腐蝕性能耐腐蝕性能
金屬絲耐腐蝕性能Resistant to Oxidation
金屬絲成型特性成型性
金屬絲機械性能高彈性模量
金屬絲機械性能非常高的強度
海洋船用部件耐腐蝕性能耐腐蝕性能
船用部件耐腐蝕性能Corrosion Resistance to Fresh Water
船用部件耐腐蝕性能Corrosion Resistance to Salt Water
船用部件耐腐蝕性能Resistant to Oxidation
船用部件成型特性成型性
船用部件機械性能高彈性模量
船用部件機械性能非常高的強度
船用部件熱性能抗應力鬆弛

適用規格

形式具體子表應用系統標準描述
Rod & BarASTMB929COPPER-NICKEL-TIN SPINODAL ALLOY ROD AND BAR
ASTMB740STRIPS, COPPER-NICKEL-TIN SPINODAL ALLOY STRIP