“2014 aluminium alloy”的意思、由来-开放百科全书

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2014 aluminium alloy

释义

Chemical Composition
2014A Aluminum Alloy
Properties
Standards
References
Further reading

2014 aluminium alloy (aluminum) is an aluminium-based alloy often used in the aerospace industry.^[1]

It is easily machined in certain tempers, and among the strongest available aluminium alloys, as well as having high hardness. However, it is difficult to weld, as it is subject to cracking.^[2]

2014 is the second most popular of the 2000-series aluminum alloys, after 2024 aluminum alloy. It is commonly extruded and forged. The corrosion resistance of this alloy is particularly poor. To combat this, it is often clad with pure aluminum. If unclad 2014 aluminum is to be exposed to the elements, it should be painted as a corrosion protection measure.^[3]

Prior to the adoption of The Aluminum Association alloy designations in 1954, 2014 was known by the industry conventional designation "14S".^[4]

Chemical Composition

The alloy composition of 2014 is:^[2]

Aluminum: Remainder
Chromium: 0.1% max
Copper: 3.9% - 5%
Iron: 0.7% max
Magnesium: 0.2% - 0.8%
Manganese: 0.4 - 1.2%
Remainder: Each 0.05% max
Remainder: Total 0.15% max
Silicon: 0.5% - 1.2%
Titanium: 0.15% max
Titanium + Zinc: 0.2% max
Zinc: 0.25% max

2014A Aluminum Alloy

2014A is an alloy of aluminum that is very similar (but not entirely identical) to 2014. Because of the naming similarity, the two can be confused. The alloy composition of 2014A is:^[1]

Aluminum: Remainder
Chromium: 0.1% max
Copper: 3.9% - 5%
Iron: 0.5% max (versus 0.7 for 2014)
Magnesium: 0.2% - 0.8%
Manganese: 0.4 - 1.2%
Remainder: Each 0.05% max
Remainder: Total 0.15% max
Silicon: 0.5% - 0.9% (versus 0.5-1.2 for 2014)
Titanium: 0.15% max
Titanium + Zinc: 0.2% max
Zinc: 0.25% max

Properties

Typical material properties for 2014 aluminum alloy are:^[5]

Density: 2.80 g/cm³, or 175 lb/ft³.
Young's modulus: 73 GPa, or 11 Msi.
Electrical conductivity: 34 to 50% IACS.
Ultimate tensile strength: 190 to 480 MPa, or 28 to 70 ksi.
Thermal Conductivity: 130 to 190 W/m-K.
Thermal Expansion: 23 μm/m-K.

Standards

2014 aluminum alloy is discussed in the following standards:^[5]

ASTM B 209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
ASTM B 210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
ASTM B 211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire
ASTM B 221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

References

1. ^¹{{Cite web |url= http://www.wilsonsmetals.com/datasheets/Aluminium-Alloy_L168-T6511-2014A-Bar_23.asmx |title= Datasheets - Aluminium Alloy - BS-L - L168 T6511 - 2014A Bar {{!}} Wilsons Ltd |access-date=2012-11-27 |archive-url= https://web.archive.org/web/20130502001211/http://www.wilsonsmetals.com/datasheets/Aluminium-Alloy_L168-T6511-2014A-Bar_23.asmx |archive-date=2013-05-02 |dead-url=yes |df= }}
2. ^¹{{cite web | url= http://www.suppliersonline.com/propertypages/2014.asp | title=2014 Aluminum Material Property Data Sheet - Product availability and request a quote}}
3. ^Marks' Standard handbook for Mechanical Engineers, 8th Ed., McGraw Hill, pp. 6-50 to 6-56
4. ^{{cite book |last= Oberg |first= Erik |title= Machinery's Handbook |edition= 27th |year= 2004 |publisher= Industrial Press Inc |page=578 |isbn=978-0-8311-2700-8|display-authors=etal}}
5. ^¹2014 (3.1255, H15, A92014) Aluminum. Retrieved on 2014-12-01.

Chemical Composition

2014A Aluminum Alloy

Properties

Standards

References

Further reading