04
May
Metals and Alloys in the Unified Numbering System UNS Axxxxx Aluminum and Aluminum Alloys updated Cxxxxx Copper and Copper Alloys updated Dxxxxx Specified Mechanical Properties Steels not updated Exxxxx Rare Earth and Similar Metals and Alloys not updated Fxxxxx Cast Irons not updated. For example AA designates A3560 UNS uses A13560.
For example A for aluminum C Copper and Copper Alloys Z Zinc and Zinc Alloys etc.
Aluminium alloy numbering system. 9 Zeilen What is the Aluminum Numbering System. The Aluminum Association created the nomenclature and it. The numbering system that has been widely adopted to classify the growing number of aluminum alloys is administered by The Aluminum Association which handles their allocation and registration.
As of this writing there are more than 600 different registered aluminum alloys which can be broadly divided into two categories. There are 400 types of wrought aluminum alloys and another 200 plus alloys that take the form of castings or ingots. We shall first consider the 4-digit wrought aluminum alloy identification system.
The first digit Xxxx indicates the principal alloying element which has been added to the aluminum alloy and is often used to describe the aluminum alloy series ie 1000 series 2000 series 3000. The unified numbering system UNS is an alloy designation system widely accepted in North America. It consists of a prefix letter and five digits designating a.
Chat Now Send Inquiry. Aluminium alloy - Wikipedia the free encyclopedia. The most important cast aluminium alloy system is AlSi.
The Aluminum Association AA has adopted a nomenclature similar to that of wrought alloys. Cast Aluminum and Aluminum Alloy Designation System A system of four-digit numerical designations incorporating a decimal point is used to identify aluminum and aluminum alloys in the form of castings and foundry ingot. The first digit indicates the alloy group.
Metals and Alloys in the Unified Numbering System UNS Axxxxx Aluminum and Aluminum Alloys updated Cxxxxx Copper and Copper Alloys updated Dxxxxx Specified Mechanical Properties Steels not updated Exxxxx Rare Earth and Similar Metals and Alloys not updated Fxxxxx Cast Irons not updated. For example Aluminum 6061 AA6061 is assigned UNS A96061. Likewise AISI 1018 steel becomes UNS G10180.
Overview of the UNS system This is an overview of the UNS system with special emphasis on common commercial alloys. The Unified Numbering System for Metals and Alloys UNS provides a means of correlating many internationally used metal and alloy numbering systems administered by societies trade associations and individual users and producers of metals and alloys. Jointly developed by SAE International and ASTM International it provides the uniformity necessary for efficient indexing record keeping data.
The alloying system for aluminum uses a rational numbering system. UNS and the Aluminum Association AA parallel each other in their numbering system. For example AA designates A3560 UNS uses A13560.
The UNS system breaks down as follows using A13560 as an example. First Digit A An alpha indicator of base metal. Always A for aluminum.
The unified numbering system UNS is an alloy designation system widely accepted in North America. Each UNS number relates to a specific metal or alloy and defines its specific chemical composition or in some cases a specific mechanical or physical property. A UNS number alone does not constitute a full material specification because it establishes no requirements for material properties.
Wrought Aluminum and Aluminum Alloy Designation System A four-digit numerical designation system is used to identify wrought aluminum and aluminum alloys. As shown below the first digit of the four-digit designation indicates the group. Lxxx Aluminum alloys grouped by major alloying elements.
ALUMINUM ASSOCIATION numbering system for wrought and cast metals. Chat Now Send Inquiry Unified numbering system - Wikipedia the free. The unified numbering system UNS is an alloy designation system widely accepted in North America.
Since the International Designation System for Wrought Aluminum and Wrought Aluminum Alloys is based on USAs national standard American National Standard Alloy and Temper Designation System for Aluminum ANSI H351 the system limits introduction of experimental alloy compositions to USA registrations. An experimental alloy registered by USA under this system is indicated by the prefix X. The only exception to this alloy numbering system is with the 1xxx series aluminum alloys pure aluminums in which case the last 2 digits provide the minimum aluminum percentage above 99 ie Alloy 13 50 9950 minimum aluminum.
Wrought aluminum alloy designation system Alloy Main alloying element 1xxx Mostly pure aluminum. No major alloying additions 2xxx Copper 3xxx Manganese 4xxx Silicon 5xxx Magnesium 6xxx Magnesium and silicon 7xxx Zinc 8xxx Other elements eg iron and silicon 9xxx Unassigned Understanding Wrought and Cast Aluminum Alloys Designations 25. In most cases the letter is suggestive of the family of metals identified.
For example A for aluminum C Copper and Copper Alloys Z Zinc and Zinc Alloys etc. Unified numbering system UNS is a system of designations established in accordance with ASTM E527 and SAE J1086 Recommended Practice for Numbering Metals and Alloys.