The Aluminum Association Alloy and Temper System Prese n ted by: - - PowerPoint PPT Presentation

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The Aluminum Association Alloy and Temper System Prese n ted by: Vice President, Standards & Technology John Weritz, Vice President, Standards & Technology 2 February 24, 2016 ALUMINUM ASSOCIATION ALLOY TEMPER DESIGNATION SYSTEM John

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SLIDE 1

Vice President, Standards & Technology

Presented by:

The Aluminum Association Alloy and Temper System

John Weritz, Vice President,

Standards & Technology

2

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SLIDE 2

ALUMINUM ASSOCIATION ALLOY TEMPER DESIGNATION SYSTEM

John Weritz – The Aluminum Association Ladan Bulookbashi – The Aluminum Association Francesca Licari – The Aluminum Association

February 24, 2016

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SLIDE 3

WHO WE ARE

The Aluminum Association

111

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SLIDE 4

OUR ROLE

Growing Aluminum’s Voice Developing Key Research Essential Standards & Business Data Enhancing Industry Safety Positioning the Metal

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SLIDE 5

OUR MARKET

  • Aerospace
  • Aluminum Cans
  • Automotive
  • Building and Construction
  • Electrical
  • Electronics and Appliances
  • Foil and Packaging
  • Other markets
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SLIDE 6

STANDARDS DEVELOPMENT

  • ANSI approved registrar of

aluminum alloys and tempers in North America

  • Secretariat of the ANSI

Accredited Standards Committee H35 on Aluminum and Aluminum Alloys

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SLIDE 7

WROUGHT ALUMINUM ALLOYS

1954 • Designation system adopted in US 1957 • Became the national standard 1970

  • Dec 15 -System officially adopted by the International

Signatories of the Declaration of Accord

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SLIDE 8

ALUMINUM DESIGNATION SYSTEM

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SLIDE 9

TEMPERS

1948 • Designation system took effect in the US 1962 • Adopted and included in ANSI H35.1

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SLIDE 10

MATERIAL SELECTION BASED ON APPLICATION

Alloy (Composition) Temper (Processing) Product (Properties)

Aluminum products with specific properties and product forms are identified by specifying both an Alloy and a Temper.

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SLIDE 11

UNDERSTANDING THE DESIGNATION SYSTEM

Aluminum 99% and greater Copper Manganese Silicon Magnesium Magnesium and Silicon Zinc Other element

1xxx 2xxx 3xxx 4xxx 5xxx 6xxx 7xxx 8xxx

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WROUGHT ALUMINUM ALLOYS

A system of four-digit numerical designations is used to identify wrought aluminum and wrought aluminum alloys The first digit Xxxx indicates the alloy group as follows

Aluminum 99% and greater Copper Manganese Silicon Magnesium Magnesium and Silicon Zinc Other element

1xxx 2xxx 3xxx 4xxx 5xxx 6xxx 7xxx 8xxx

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SLIDE 13

WROUGHT ALUMINUM

1xXX

Minimum aluminum percentage

Examples: 1100 99.00% minimum aluminum 1350 99.50% minimum aluminum

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SLIDE 14

WROUGHT ALUMINUM

1Xxx

If zero

  • Unalloyed aluminum having natural impurity

limits

  • Other than zero: Special control of one or more

individual impurities

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SLIDE 15

WROUGHT ALUMINUM ALLOYS

xxXX

  • In 2xxx-8xxx: no special significance serve only to

identify the different aluminum alloys in the group Note 1: All alloys belonging to a family have the same two last digits

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SLIDE 16

WROUGHT ALUMINUM ALLOYS

xXxx

If zero

In 2xxx-8xxx: original alloy of a family Other than zero In 2xxx-8xxx: modifications of the original alloy

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SLIDE 17

WROUGHT ALUMINUM ALLOYS

  • Identified by a serial letter after the numerical

designation

  • Serial letters are assigned in alphabetical sequence

starting with A but omitting I, O and Q

VARIATIONS OR MODIFICATIONS OF ORIGINAL ALLOYS

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SLIDE 18

WROUGHT ALUMINUM ALLOYS

www.aluminum.org/tealsheets

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SLIDE 19

TEMPERS

BASIC TEMPER DESIGNATIONS

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1-4 Following H Indicate Specific Combination of Basic Operation

TEMPERS

H TEMPERS

H1

Strain-hardened

  • nly

H2

Strain-hardened and partially annealed

H3

Strain-hardened and stabilized

H4

Strain-hardened and lacquered or painted

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SLIDE 21

TEMPERS

H TEMPERS

H1X H2X H3X H4X

  • X Indicates the degree of strain-hardening as

identified by the min. value of the ultimate tensile strength

  • 8 signifies full hard temper (approx. 75% cold work)
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SLIDE 22

TEMPERS

H TEMPERS

H1xX H2xX H3xX H4xX

  • The third digit when used indicates a variation of a two

digit temper Examples:

  • H321
  • H116
  • H128
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SLIDE 23

TEMPERS

T TEMPERS

1-10 Following T Indicate Specific Sequences Of Basic Treatments

  • Cooled from an elevated temp. shaping process & naturally

aged

T1

  • Cooled from an elevated temp. shaping process, cold worked &

naturally aged

T2

  • Solution heat treated, cold worked & naturally aged 9

T3

  • Solution heat treated & naturally aged 9

T4

  • Cooled from an elevated temperature shaping process and then

artificially aged

T5

  • Solution heat treated and then artificially aged 9

T6

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SLIDE 24

TEMPERS

T TEMPERS

T7 Solution Heat Treated And Then Artificially Aged

(Fracture Toughness)

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SLIDE 25

TEMPERS

T TEMPERS

1-10 Following T Indicate Specific Sequences Of Basic Treatments

  • Solution heat treated, cold worked and then artificially

aged 9

T8

  • Solution heat treated, artificially aged and then cold

worked 9

T9

  • Cooled from an elevated temp. shaping process, cold

worked & artificially aged

T10

9 See Footnote

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SLIDE 26

Stress Relieved by Combined Stretching & Compressing

T_54 T_52 T_51 T_510 T_511

Stress Relieved By Compressing Stress Relieved By Stretching

Plate Profiles Forgings Die Forgings

TEMPERS

T TEMPERS

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SLIDE 27
  • Temper Designations for Producer/Supplier

Laboratory Demonstration of Response to Heat Treatment

T42 Solution heat-treated from annealed or F temper and naturally aged to substantially stable condition. T62 Solution heat-treated from annealed or F temper and artificially aged. T7_2 Solution heat-treated from annealed or F temper and artificially overaged to meet the mechanical properties and corrosion resistance limits of the T7_ temper

  • Temper Designations for Producer/Supplier

Demonstration of Response to Temper Conversion

T4 to T62 Capability Demonstration for response to aging T4 to T7_2 Capability Demonstration for response to overaging

T_2 TEMPERS-

LAB TESTED CAPABILITY

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SLIDE 28

REGISTRATION REQUEST

SYSTEM

http://www.aluminum.org/resources/industry-standards/alloy-product- registration-process-and-request-forms

ALLOY TEMPER

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SLIDE 29

REGISTRATION PROCESS

Application Reviewed by Technical Committee on Product Standards Added to Registration Records

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Wrought alloy is identified by alloy-temper designation & product form

ATTRIBUTES OF REGISTRATION SYSTEM

Peer reviewed process

Alloys in a group share common characteristics

ANSI approved

Base for ASTM, AMS, AMMA & ASME standards

Statistically derived values

Internationally accepted alloy designation Allow designations not specifically defined in ANSI

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SLIDE 31

Harmonized definitions internationally

BENEFITS OF REGISTRATION SYSTEM

Enhances scrap sorting and recyclability Promotes domestic and international commerce

Facilitates a stable/ reliable supply Clear path for evolution of new alloys/products

S Chance to achieve recyclability goals Means to communicate to multiple suppliers Allows identifiability

  • f products

in a structure

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SLIDE 32

STANDARDS PUBLICATIONS

  • www.aluminum.org/

bookstore

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THANK YOU

@AluminumNews www.aluminum.org /AluminumAssociation

Let’s Be Social

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THE ALUMINUM ASSOCIATION

1400 CRYST AL DRIVE SUITE 430 ARLINGTON, V A 22202 WWW.ALUMINUM.ORG John Weritz – jweritz@aluminum.org 703.358.2989 Ladan Bulookbashi – lbulookbashi@aluminum.org 703.358.2978 Francesca Licari – flicari@aluminum.org 703.358.2990

February 24, 2016