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Technical Support
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| Comparison Table of Aluminum Alloy Grades of China and United
States |
|
CHINA |
THE UNITED STATES |
|
L1-L6
、 L5-1 |
1070
、1060 、 1050 、 1030 、 1100 |
|
LY11
、 LY12 、 LY1 |
2017
、 2024 、 2117 |
|
LD10
、 LD5 |
2014
、 2214 |
|
LD7 |
2618 |
|
LD9
、 LD8 |
2018
、 2218 |
|
LY16
、 LY17 |
2219
、 2021 |
|
LF21 |
3003 |
|
LF2
、 LF3 、 LF4 |
5052
、 5154 、 5083 |
|
LF5
、 LF11 、 LF6 、 LF5-1 |
5456
、 5056 |
|
LD2
、 LD2-1 、 LD2-2 、 LD30 、 LD31 |
6165
、 6061 、 6055 、 6063 |
|
LC6
、 LC4 、 LC9 |
7001
、 7178 、 7075 |
|
LC5
、 LC10 |
7076
、 7175 、 7079 |
|
LD11 |
4032 |
|
|
（GB/T 3190-1996）
Comparison Table of Present and Former Alloy Grades
of China
（GB/T 3190-1996）
|
|
Present Grade
|
Former Grade |
Present
Grade |
Former Grade |
Present
Grade |
Former
Grade |
| 1A99 |
Former
LG5 |
2B12 |
Former LY9 |
3003 |
－ |
| 1A97 |
Former LG4 |
2A13 |
Former LY13 |
3103 |
－ |
| 1A95 |
－ |
2A14 |
Former
LD10 |
3004 |
－ |
| 1A93 |
Former
LG3 |
2A16 |
Former
LY16 |
3005 |
－ |
| 1A90 |
Former
LG2 |
2B16 |
Before
Ly16-1 |
3105 |
－ |
| 1A85 |
Former
LG1 |
2A17 |
Former
LY17 |
4A01 |
Former
LT1 |
| 1080 |
－ |
2A20 |
Before
LY20 |
4A11 |
Former
LD11 |
| 1080A |
－ |
2A21 |
Before
214 |
4A13 |
Former
LT13 |
| 1070 |
－ |
2A25 |
Before
225 |
4A17 |
Former
LT17 |
| 1070A |
Replaced L1 |
2A49 |
Before
149 |
4004 |
－ |
| 1370 |
－ |
2A50 |
Former
LD5 |
4032 |
－ |
| 1060 |
Replaced L2 |
2B50 |
Former
LD6 |
4043 |
－ |
| 1050 |
－ |
2A70 |
Former
LD7 |
4043A |
－ |
| 1050A |
Replaced L3 |
2B70 |
Before
LD7－1 |
4047 |
－ |
| 1A50 |
Former
LB2 |
2A80 |
Former
LD8 |
4047A |
－ |
| 1350 |
－ |
2A90 |
Former
LD9 |
5A01 |
Before
2101、LF15 |
| 1145 |
－ |
2004 |
－ |
5A02 |
Former
LF2 |
| 1035 |
Replaced L4 |
2011 |
－ |
5A03 |
Former
LF3 |
| 1A30 |
Former
L4－1 |
2014 |
－ |
5A05 |
Former
LF5 |
| 1100 |
Replaced LF5－1 |
2014A |
－ |
5B05 |
Former
LF10 |
| 1200 |
Replaced L5 |
2214 |
－ |
5A06 |
Former
LF6 |
| 1235 |
－ |
2017 |
－ |
5B06 |
Former
LF14 |
| 2A01 |
Former
LY1 |
2017A |
－ |
5A12 |
Former
LF12 |
| 2A02 |
Former
LY2 |
2117 |
－ |
5A13 |
Former
LF13 |
| 2A04 |
Former
LY4 |
2218 |
－ |
5A30 |
Before
2103、LF16 |
| 2A06 |
Former
LY6 |
2618 |
－ |
5A33 |
Former
LF33 |
| 2A10 |
Former
LY10 |
2219 |
Before
LY19、147 |
5A41 |
Former
LT41 |
| 2A11 |
Former
LY11 |
2024 |
－ |
5A43 |
Former
LF43 |
| 2B11 |
Former
LY8 |
2124 |
－ |
5A66 |
Former
LT66 |
| 2A12 |
Former
LY12 |
3A21 |
Former
LF21 |
5005 |
－ |
| 5019 |
－ |
6B02 |
Former
LD2－1 |
7A09 |
Former
LC9 |
| 5050 |
－ |
6A51 |
Before
651 |
7A10 |
Former
LC10 |
| 5251 |
－ |
6101 |
－ |
7A15 |
Before
LC15、157 |
| 5052 |
－ |
6101A |
－ |
7A19 |
Before
919、LC19 |
| 5154 |
－ |
6005 |
－ |
7A31 |
Before
183-1 |
| 5154A |
－ |
6005A |
－ |
7A33 |
Before
LB733 |
| 5454 |
－ |
6351 |
－ |
7A52 |
Before
LC52、5210 |
| 5554 |
－ |
6060 |
－ |
7003 |
Former LC12 |
| 5754 |
－ |
6061 |
Former
LD30 |
7005 |
－ |
| 5056 |
Former
LF5－1 |
6063 |
Former
LD31 |
7020 |
－ |
| 5356 |
－ |
6063A |
－ |
7022 |
－ |
| 5456 |
－ |
6070 |
Former
LD2－2 |
7050 |
－ |
| 5082 |
－ |
6181 |
－ |
7075 |
－ |
| 5182 |
－ |
6082 |
－ |
7475 |
－ |
| 5083 |
Former
LF4 |
7A01 |
Former
LB1 |
8A06 |
Former
L6 |
| 5183 |
－ |
7A03 |
Former
LC3 |
8011 |
Before
LT98 |
| 5086 |
－ |
7A04 |
Former
LC4 |
8090 |
－ |
| 6A02 |
Former
LD2 |
7A05 |
Before
705 |
－ |
－ |
Notes:
(1) 'Former' refers to grades that have the same
chemical composition with present grades and are
in compliance with GB3190－82;
(2) 'Replaced' refers to grades that have the similar
chemical composition with present grades and are
in compliance with GB3190－82;
(3) 'Before' refers to grades that have been applied
before but not included in GB3190－82.
|
|
| |
| |
| ALLOY
SYSTEM |
TEMPER |
| L
-- Aluminum |
R
-- Heat Processing |
| LF
--（Ai - Mg 、 Ai - Mn） Rust Prevention Aluminum Alloy
|
M
-- Annealing |
| LY
-- （Ai - Cu - Mg） Hard Aluminum Alloy |
Y
-- Hardening |
| LC
-- （Ai - Cu - Mg - Zn ） Ultrahard Aluminum Alloy |
C
-- Quenching |
| LD
-- （Ai - Mg - Si & Cu - Mg - Si） Forged Aluminum
Alloy |
CZ
-- Quenching, Natural Ageing |
| LT
-- Special Aluminum Alloy |
CZY
-- Quenching, Natural Ageing, Cold Working |
| - |
CS
-- Quenching, Manual Ageing |
| - |
CSY
-- Quenching, Manual Ageing, Cool Working |
| - |
Y2
-- Semi Hard |
| - |
RCS（T5）--
Air Cooling, Manual Ageing |
|
(GB/T16475－1996)
Basic State Code, Name, Description and Application |
|
Code |
Name |
Description and Application |
|
F |
Free Processing |
Applicable for products that have
no special requirements on hardening and heat treatment
during processing. The mechanical properties are
not required. |
|
O |
Annealing |
Applicable for products with the lowest strength after
complete annealing
|
|
H |
Processing and Hardening |
Applicable for products that are
hardened to improve the strength. The products can
be additionally heat treated (not required) to reduce
the strength after hardening. The H sould be followed
by 2 or 3 digits.
|
|
W |
Solid Solution Heat Treatment |
An unstable state. Applicable only for alloys that
are being natural ageing treated after solid solution
heat treatment. The cide indicates that the product
is in natural ageing state.
|
| T |
Heat Treatment (Different to F, O, H) |
Applicable for products that have
stable states via hardening (not required) after
heat treatment. The T should be followed by 1 or
more digits. |
| Comparison Table of Present and Former
Original State Codes
（GB/T16475－1996）
|
| Former
Code |
Present
Code |
Former
Code |
Present Code |
| M |
O |
CYS |
TX51、TX52 |
| R |
H112
or F |
CZY |
T0 |
| Y |
HX8 |
CSY |
T9 |
| Y1 |
HX6 |
MCS |
T62 |
| Y2 |
HX4 |
MCZ |
|
| Y4 |
HX2 |
CGS1 |
T73 |
| T |
HX9 |
CGS2 |
T76 |
| CZ |
T4 |
CGS3 |
T74 |
| CS |
T6 |
RCS |
T5 |
| Notes: The state of products
that were delivered in R state or whose CZ and CS sample's
performance was provided formerly is T62 and T42 respectively. |
|
HXY Subdivided State Codes and Processing Hardness |
|
Subdivided State Code
|
Processing
Hardness |
|
HX1 |
The tensile strength limit is between 0 and HX2 states. |
|
HX2 |
The tensile strength limit is between 0 and HX4 states.
|
| HX3 |
The tensile strength limit is between HX2 and HX4
states. |
|
HX4 |
The tensile strength limit is between 0 and HX8 states.
|
|
HX5 |
The tensile strength limit is between HX4 and HX6
states.
|
| HX6 |
The tensile strength limit is between HX4 and HX8
states.
|
| HX7 |
The tensile strength limit is between HX6 and HX8
states.
|
| HX8 |
Hard |
| HX9 |
ltrahard, the minimum tensile strength
limit is at least 10MPa higher than HX8. |
Notes: When the tensile strength limit of HX1-HX9
state doesn't end with o or 5, the limit should
be adjusted to the higher value in the neighboring
figures end with 0 or 5.
|
|
Description and Application TX Subdivided State Codes |
| State Code |
Description and Application |
|
T0 |
The
state of alloy that is natural ageing treated and cold
processed after solid solution heat treatment. Applicable
for products that are cold processed to increase the
strength |
|
T1 |
The
stable state of alloy that is natural ageing treated
after high temperature forming. Applicable for products
that are not cold processed (straightening and flattening
is allowed if mechanical properties are not changed)
after high temperature forming |
| T2 |
The
stable state of alloy that is natural ageing treated
after high temperature forming. Applicable for products
that are cold processed, straightened or flattened to
increase the strength after high temperature forming
|
|
T3 |
The stable
state of alloy that is cold processed and natural ageing
treated after solid solution heat treatment. Applicable
for products that are cold processed, straightened or
flattened to increase the strength after solid solution
heat treatment |
|
T4 |
The stable
state of alloy that is natural ageing treated after
solid solution heat treatment. Applicable for products
that are not cold processed (straightening and flattening
is allowed if mechanical properties are not changed)
after solid solution heat treatment |
|
T5 |
The
state of alloy that is manual ageing treated after high
temperature treatment. Applicable for products that
are manual ageing treated but not cold processed (straightening
and flattening is allowed if mechanical properties are
not changed) after high temperature forming |
|
T6 |
The state
of alloy that is manual ageing treated after solid solution
heat treatment. Applicable for products that are not
cold processed (straightening and flattening is allowed
if mechanical properties are not changed) after solid
solution heat treatment |
|
T7 |
The
state of alloy that is ageing treated after solid solution
heat treatment. Applicable for products whose strength
surmounts the peak point in ageing curve to maintain
certain important properties during manual ageing treatment
|
|
T8 |
The
state of alloy that is cold processed, manual ageing
treated after solid solution heat treatment. Applicable
for products that are cold processed, straightened or
flattened to increase the strength |
|
T9 |
The state
of alloy that is cold processed, manual ageing treated
after solid solution heat treatment. Applicable for
products that are cold processed to increase the strength
|
|
T10 |
The state
of alloy that is cold processed, manual ageing treated
after high temperature treatment Applicable for products
that are cold processed, straightened or flattened to
increase the strength |
| Notes: Some alloys in 6XX category
can achieve the same solid solution heat treatment performance
whether they are treated in furnaces, or rapid cooled
during high-temperature forming to retain their soluble
ingredients in solid solution. The T3, T4, T6, T7, T8
and T9 states of the alloys can be heat treated in either
of the two methods. |
| Description
and Application TXX and TXXX Subdivided State Codes
|
| State Code |
Description
and Application |
|
T42 |
Applicable
for products that are natural ageing treated to stable
state after 0 or F solid solution treatment. Also applicable
for any product that has the required mechanical properties
of T42 after heat treatment |
|
T62 |
Applicable for products that are manual ageing treated
after 0 or F state solid solution heat treatment. Also
applicable for any product that has the required mechanical
properties of T62 after heat treatment |
|
T73 |
Applicable
for products that are ageing treated to required mechanical
and stress corrosion resistant performance after solid
solution heat treatment |
|
T74 |
Same to T73 state. The tensile strength is better than
that of T73, but is lower than T76. |
|
T76 |
Same
to T73 State. The tensile strength of this state is
higher than that of T73 and T74 states. The stress corrosion
and breaking resistant performance is lower than that
of T73 and T74 states, but the flaking resistant resistant
performance is better. |
|
T72 |
Applicable for products that are manual ageing treated
and whose mechanical properties and corrosion resistance
reach the T7X states after 0 or F solid solution heat
treatment |
|
T81 |
Applicable
for products that are about 1% cold processed and manual
ageing treated to increase the strength after solid
solution heat treatment |
|
T87 |
Applicable
for products that are about 1% cold processed and manual
ageing treated to increase the strength after solid
solution heat treatment |
|
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