the aluminum association alloy and temper system presentation 160224.pdf · vice president,...
TRANSCRIPT
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Vice President, Standards & Technology Presented by:
The Aluminum Association Alloy and Temper System
John Weritz, Vice President,
Standards & Technology
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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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WHO WE ARE The Aluminum Association
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OUR ROLE
Growing Aluminum’s Voice Developing Key Research
Essential Standards & Business Data Enhancing Industry Safety
Positioning the Metal
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OUR MARKET
• Aerospace
• Aluminum Cans
• Automotive
• Building and Construction
• Electrical
• Electronics and Appliances
• Foil and Packaging
• Other markets
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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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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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ALUMINUM DESIGNATION SYSTEM
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TEMPERS
1948 • Designation system took effect in the US
1962 • Adopted and included in ANSI H35.1
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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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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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WROUGHT ALUMINUM
1xXX Minimum aluminum percentage
Examples: 1100 99.00% minimum aluminum 1350 99.50% minimum aluminum
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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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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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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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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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WROUGHT ALUMINUM ALLOYS
www.aluminum.org/tealsheets
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TEMPERS
BASIC TEMPER DESIGNATIONS
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1-4 Following H Indicate Specific Combination of Basic Operation
TEMPERS H TEMPERS
H1
Strain-hardened only
H2
Strain-hardened and partially annealed
H3
Strain-hardened and stabilized
H4
Strain-hardened and lacquered or painted
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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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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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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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TEMPERS T TEMPERS
T7 Solution Heat Treated And Then Artificially Aged
(Fracture Toughness)
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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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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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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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REGISTRATION REQUEST SYSTEM
http://www.aluminum.org/resources/industry-standards/alloy-product-registration-process-and-request-forms
ALLOY
TEMPER
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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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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 of products
in a structure
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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 CRYSTAL DRIVE SUITE 430
ARLINGTON, VA 22202
WWW.ALUMINUM.ORG
John Weritz – [email protected] 703.358.2989 Ladan Bulookbashi – [email protected] 703.358.2978 Francesca Licari – [email protected] 703.358.2990
February 24, 2016