3.4 cast material material resulting from the bulk solidification of a previously homogeneous liquid metal 3.5 cast + wrought material material resulting from further solid state work
General
The conventional designation defines by one series of characters (letters, figures, dashes) all metallic materials having the same basic chemical composition without taking into account:
— any option concerning other elements than alloying elements,
The melting process may lead to changes in the mass content of certain alloying elements; however, these variations are deemed insignificant and should not be taken into account.
ASD-STAN designation
ASD-STAN designation is not applicable to new standard and revision for:
— nickel base or cobalt base alloys (see 5.2, EN 10027-1 and EN 10027-2),
— steels (see 5.4, EN 10027-1 and EN 10027-2),
— commercially pure titanium and titanium base alloys (see 5.5)
The ASD-STAN designation of each material comprises nine characters divided into three groups:
A group of three characters consisting of:
— the symbol of the base metal in accordance with ISO 80000-9, but written entirely in capital letters,
— dash(es) for completion to three characters
The first three characters of the designation represent the significant alloying elements, which can be one, two, or three, excluding all aluminum base materials If the chemical composition includes only one or two alloying elements, the remaining character(s) will be represented by a zero.
This group of three characters is defined in the subsequent clauses, with one character specifically indicating the production method for structural materials or their application in joining materials (refer to section 4.3).
The last two characters of this group, or the last character for cast aluminum base alloys, represent a serial number starting at 01 This serial number must be updated whenever the first three and the last five characters assigned do not correspond to the new basic chemical composition being designated.
The conventional designation is unique for one basic chemical composition, except for certain filler metals for brazing (see 6.2.2.2 and 6.2.2.3).
Method of production or use
A capital letter from the following series:
Basic chemical composition (base metal excluded)
4.4.1 In the case of unalloyed materials, the first three digits indicate information as in 5.1
In metallic alloys, excluding all aluminum base materials, the first three digits represent the significant alloying elements, which can be one, two, or three If there is only one or two alloying elements present in the chemical composition, the remaining digit(s) will be zero.
The use of this group of three digits is defined in each of the relevant following clauses
The last two digits of this five-digit group represent a serial number beginning with 01 This serial number will be updated whenever the existing first three and last five digits do not correspond to the new basic chemical composition being assigned.
In accordance with sections 4.1, 4.2, and 4.3, the first three and the last five digits of the specified codes uniquely represent a single basic chemical composition, regardless of the letter designated as the fourth digit, with the exception of certain brazing materials outlined in sections 6.2.2.1 and 6.2.2.2.
Mass content of an alloying element
The arithmetic mean of the limits of a range will be used When two alloying elements have identical mass content, they will be listed in alphabetical order based on their international symbols.
Unalloyed metals
With the exception of all aluminium base materials (see 5.3), the group of five digits of the designation comprises from left to right:
— a single capital letter U symbolic of this category,
— a number indicating the percentage of base metal after the decimal point, completed with zero if necessary,
The last two digits serve as serial numbers, which will be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition to be designated.
EXAMPLE Cast + wrought copper 99,97 % pure
NOTE In this example, the chemical composition is unique and the serial number can only be 01.
Nickel base or cobalt base alloys
Alloy names and numbers are defined by EN 10027-1 and EN 10027-2 standards The name consists of chemical symbols representing the main alloy elements, followed by a figure indicating their average content, and additional symbols for other significant alloy elements The material number, structured according to EN 10027-2, includes the number 2 for the material group, which encompasses chemically resistant and high-temperature nickel and cobalt alloys.
Aluminium base materials
5.3.1 All materials other than cast materials
The five-digit designation system established by the Aluminium Association is used for both commercially pure aluminium and aluminium alloys, and it may be followed by a dash if needed.
2) ALUMINUM ASSOCIATION, Inc., 900 19th Street N.W., Washington, D.C 20006
The group of five characters in the designation conforms to EN 1780-1 for the first four characters, the fifth character being a serial number for aerospace applications
This serial number shall be changed every time the first three and the last five characters already allocated do not fit the new basic chemical composition to be designated
EXAMPLE Cast aluminium base alloy
Steels
Steel names and numbers are defined by the standards EN 10027-1 and EN 10027-2 The name consists of chemical symbols representing the primary alloy elements, followed by a figure that indicates their average content, and additional symbols for other significant alloy elements The material number is structured according to EN 10027-2.
Commercially pure titanium and titanium base alloys
The unalloy titanium designation comprise from left to right:
— two characters corresponding to their tensile strength average, in tenth of MPa
The titanium alloys designation comprise from left to right:
The chemical symbols of the primary alloying elements are listed in descending order of their mass content, with each element preceded by one or two characters indicating its average mass percentage For example, in the alloy designation Ti-6Al-4V, "Ti" represents titanium, while "6" and "4" denote the mass percentages of aluminum and vanadium, respectively.
NOTE Some high-purity grades of alloys are designated with the suffix ELI, meaning Extra Low Interstitials
EXAMPLE Ti-6Al-4V ELI (see EN 4722) 3 )
Magnesium base alloys
The group of five characters in the designation comprises from left to right:
— one or two characters indicating in decreasing order of their mass content the one or two alloying elements of highest mass content, in accordance with Table 1,
NOTE When only one reference is needed, the following character is a zero (see 4.4)
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition being designated.
Table 1 — List of alloying element references for magnesium base alloys
3) In preparation at the date of publication of this standard
EXAMPLE 1 Cast magnesium base alloy
EXAMPLE 2 Cast magnesium base alloy
Other metal base alloys
The group of five characters in the designation comprises from left to right:
— one or two characters indicating in decreasing order of their mass content the one or two alloying elements of the highest mass content, in accordance with Table 2,
NOTE When only one reference is needed, the following character is a zero (see 4.4)
Table 2 — List of alloying element references for other base alloys
EXAMPLE Cast + wrought copper alloy
Filler metals for welding
The same rules as those for the corresponding categories considered in Clause 5 shall be applied.
Filler metals for brazing
6.2.1 Unalloyed filler metals for brazing
Their designation shall be chosen according to the same rules as those for unalloyed structural materials (see 5.1)
NOTE In this example, the chemical composition is unique and the serial number can only be 01
6.2.2 Alloyed filler metals for brazing
The designation of the group of five characters must adhere to the rules for the relevant structural materials, as outlined in Clause 5, with the exception of nickel and cobalt base filler metals for brazing (refer to 6.2.2.2) and silver and gold base filler metals for brazing (see 6.2.2.3).
6.2.2.2 Nickel and cobalt base filler metals for brazing
The group of five characters in the designation comprises from left to right:
— one character indicating the presence either of silicon, or of boron, or of both or the absence of these two elements, in accordance with Table 3,
— one or two characters indicating in decreasing order of their mass content the one or two alloying elements of highest mass content, in accordance with Table 4,
NOTE When no reference or only one reference is needed, the remaining character(s) is (are) a zero
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition being designated.
Table 3 — List of the references associated with the presence or absence of silicon and boron for nickel and cobalt base filler metals for brazing
Table 4 — List of alloying elements references for nickel and cobalt base filler metals for brazing
EXAMPLE 1 Cobalt base filler metal for brazing
EXAMPLE 2 Nickel base filler metal for brazing
6.2.2.3 Silver and gold base filler metals for brazing
The group of five characters in the designation comprises from left to right:
The article highlights the primary alloying elements in decreasing order of their mass content, as indicated by one, two, or three characters, in accordance with Table 5.
NOTE When only one or two references are needed, the remaining character(s) is (are) a zero
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition being designated.
Table 5 — List of alloying element references for silver and gold base filler metals for brazing
EXAMPLE 1 Silver base filler metal for brazing
EXAMPLE 2 Gold base filler metal for brazing
7 Allocation and registration of the conventional designations
Allocation
The conventional designation shall be allocated by ASD-STAN: Metallic Materials Domain.
Registration of the conventional designations
The conventional designation shall be registered by ASD-STAN: Metallic Materials Domain
A register shall be kept by ASD-STAN: Metallic Materials Domain, indicating the chemical compositions as specified in the corresponding material standards versus each conventional designation
ASD-STAN designation is not applicable to new standard and revision for:
— nickel base or cobalt base alloys (see 5.2, EN 10027-1 and EN 10027-2), steels (see 5.4, EN 10027-1 and EN 10027-2),
— commercially pure titanium and titanium base alloys (see 5.5)
NOTE The relationship between former ASD-STAN designations and the new designations according to this standard is given in TR 3900
ASD-STAN designation: Nickel base or cobalt base alloy
(Not applicable to new standard and revision)
The group of five digits of the designation comprises from left to right: a) an indication of the chromium mass content by one capital letter,
— D for alloys which have a chromium mass content < 15 %,
Alloys classified as H contain a chromium mass content of at least 15% Additionally, they are identified by one or two digits that represent the highest mass content alloying elements, excluding chromium, in descending order, as specified in Table B.1.
When a single reference is required, it is indicated by a zero The last two digits serve as serial numbers, which must be updated whenever the first three and the last five characters assigned do not correspond to the new basic chemical composition being designated.
Table B.1 — List of alloying element references for nickel and cobalt base alloys
EXAMPLE 1 Cast nickel base alloy
EXAMPLE 2 Cast + wrought cobalt base alloy
EXAMPLE 3 Powder metallurgy nickel base alloy
(Not applicable to new standards and revisions)
Unalloyed steels
The group of five characters in the designation comprises from left to right:
— a capital letter X symbolic of this category,
— one character indicating the carbon mass content according to Table C.1,
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition to be designated.
Table C.1 — List of carbon mass content references for unalloyed steels
EXAMPLE Unalloyed cast + wrought steel
Low alloy steels
The group of five characters in the designation comprises from left to right:
— a capital letter L symbolic of this category,
— two characters indicating in decreasing order of their mass content the two alloying elements of highest mass content, in accordance with Table C.2,
The last two characters serve as a serial number, which must be updated whenever the first three and the last five characters assigned do not align with the new basic chemical composition to be designated.
Table C.2 — List of alloying element references for low alloy steels
EXAMPLE 1 Cast low alloy steel
EXAMPLE 2 Cast + wrought low alloy steel
High alloy ferritic and martensitic steels
The group of five characters in the designation comprises from left to right:
— a capital letter M symbolic of this category,
— one character indicating chromium and nickel mass content, in accordance with Table C.3,
— one character indicating the third alloying element of the highest mass content of the other alloying elements, in accordance with Table C.3,
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition to be designated.
Table C.3 — List of alloying element references for high alloy ferritic and martensitic steels
EXAMPLE Cast + wrought ferritic steel
High alloy austenitic and austenitic-ferritic steels
The group of five characters in the designation comprises from left to right:
— a capital letter A symbolic of this category,
— one character indicating chromium and nickel mass content, in accordance with Table C.4,
The last two characters serve as a serial number, which must be updated whenever the first three and last five characters assigned do not align with the new basic chemical composition to be designated.
Table C.4 — List of alloying element references for high alloy austenitic and austeno-ferritic steels
EXAMPLE Cast + wrought austenitic-ferritic steel
ASD-STAN designation: Commercially pure titanium and titanium base alloy
(Not applicable to new standards and revisions)
Commercially pure titanium
The group of five characters in the designation comprises from left to right:
— two characters indicating the presence of both iron and oxygen elements, using reference 9 of Table D.1,
The last two characters of a serial number will be modified whenever the first three and the last five characters assigned do not correspond to the new basic chemical composition being designated For instance, in the case of cast and wrought commercially pure titanium, this adjustment is necessary to ensure accurate identification.
Titanium base alloy
The designation consists of five characters, starting from the left with one or two characters that represent the alloying elements with the highest mass content, listed in decreasing order according to Table D.1.
NOTE When only one reference is needed, the following character is a zero
Table D.1 — List of alloying element references for titanium base alloys
EXAMPLE 1 Powder metallurgy titanium base alloy
EXAMPLE 2 Cast titanium base alloy
EXAMPLE 3 Cast + wrought titanium base alloy