Some standard content:
National Standard of the People's Republic of China
Stainless steel cold rolled steel sheets
Cold rolled stainlegs steel sheets and plates
1 Main content and scope of application
GB 3280-92
Replaces GB 3280..84
This standard specifies the dimensions, appearance, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of stainless steel cold rolled steel sheets.
This standard applies to general purpose corrosion resistant stainless cold rolled steel sheets. 2 Reference standards
GR 226
GB 231
Method for sampling samples for chemical analysis of steel and allowable deviation of chemical composition of finished products
Method for acid immersion test of low-carbon structure and defects of steel
Method for tensile test of metals
Method for Grignard hardness test of metals
Method for Brinell whip test of metals
Method for bending test of metals
General provisions for acceptance, packaging, marking and quality certificate of steel plates and strips
Dimensions, shape, weight and allowable deviations of rolled steel plates and strips GB 2975
Sampling provisions for mechanical properties test of steel materials GB 4334, 1
Method for 10% oxalic acid etching of stainless steel
GB 4331, 2
Stainless steel sulfuric acid-ferric sulfate corrosion test method GB4334.3
65% nitric acid corrosion test method
Stainless steel
GB4334.4 Stainless steel phosphoric acid-hydrofluoric acid corrosion test method GB4334.5 Stainless steel sulfuric acid-copper sulfate corrosion test method GB4334.6 Stainless steel 5% vegetable acid corrosion test method Metal Vickers test method
GB 4340
GB 6397
Metal tensile test specimen
GB 10125 Corrosion test in artificial atmosphere Salt spray test (SS test) 3 Dimensions and appearance
3.1 The dimensions and allowable deviations of steel plates shall comply with the provisions of GR708. 3.2 The unevenness of steel plates shall not exceed 10 mm per meter. The unevenness of steel plates in the hardened state shall comply with the provisions of Table 1 per meter. Approved by the State Bureau of Technical Supervision on November 16, 1992, and implemented on June 1, 1993
600--1 000
21 000-1 219
20.1G~0.80
20. 10~0. 80
CB 3280- 92
Table of maximum allowable values of roughness of steel plates in different cold-work hardening states
Maximum allowable values of unevenness
According to the provisions of the supplier's cooperative design
Note;) The values listed in the table are only applicable to 2LT13Mn9Ni: and [Cr17Xi7; other grades have different cold hardening states and are subject to consultation between the supply and demand parties. DY, HY, Y, and TY represent low-hardening, semi-cold hardening, net hardening, and special cold hardening. 4 Technical requirements
4.1 Category, grade and chemical composition
4.1.1 The type, grade and chemical composition (melting analysis) of steel shall be in accordance with the provisions of Tables 2 to 6. 4.1.2 The chemical composition of the steel plate shall be allowed to be adjusted. It shall comply with the provisions of Table 3 of GB2221. 4.2 Delivery status
After cold rolling, the steel plate shall be heat treated with reference to Tables 7 to 11, and pickled or similar treatment shall be carried out. Then, it shall be straightened. However, pickling and other treatments can be omitted when performing light heat treatment. For the heat treatment of precipitation hardened steel, the purchaser shall indicate the type of heat treatment in the contract, and shall indicate whether it is heat treated for the steel plate itself or for the sample.
If necessary, it can be flattened, ground or cold rolled to different degrees...4.3 Mechanical properties
The mechanical properties of heat-treated steel plates shall comply with the provisions of 4.3.1~4.3.4 of this standard, the strength and hardness of various steel cabinets, and only when the purchaser requires and indicates in the contract, it will be solidified. For several hardness tests, they can be tested according to different methods according to the different sizes and states of the steel plates. For the bending test of various types of steel, the inspection shall be carried out only when the purchaser requires it and it is indicated in the contract. 231
1Cr17Mn6Ni5N
1Cr18Mn8Ni5N
2Cr13Mn9Ni4
1Cr17Ni7
1Cr17Ni8
1Cr18.Vig
1Cr18Ni9Si3
oCri8Ni9
Table 2 Chemical composition of austenitic steels
Chemical composition
17,00 --
3280-92
0oCr19Ni10
(CCt14Ni9N
UCr19Ni1aNhN
o0Cr18Ni10N
JCr18Ni12| |tt||DC23Ni13
0125Ni20
OCr17Ni12Mo2
.0.035
Continued Table 2
Chemical Composition
.0.030
0,15 ~
00C17Ni14Mo2
CCr17Ni12Mo2N
19 (Xr17Ni13Mo2N
2 0Cr18Ni12M021
21 1Cr18Ni12Mo21!
22 DCr18Ni12Mo2Cn2
23 00Cr18Ni14Mn2Cu2
24 0Cr18Ni12M03Ti
Continued Table 2
Chemical composition
$=0,030
11. 00 -~
16,00～
17:00~-
Ti 5×
ri5(c%
Ti5×c%~
251CriaNi2Mo3Tiu
oCr19Ni13Mo3
D0r19Ni13Mo3
0Cr18Ni16M05
DCri8N1oTi
1Cr18Ni9\!
OCtI&Ni! Nb
OCr18Ni13Si4
Note: (Except the elements specified in the table, other alloying elements may be added if necessary1) This grade is not recommended for general use except for special purposes. P
Continued Table 2
.0.030
18. 00 --
Ti25×C%
3280-92
00Cr18Ni5M3Si2
1Cr18Ni11Si4AlTi
1Crz1Ni5Ti
(K_r26Ni5Mo2
0, 10-~
Note: In addition to the elements specified in the table, other alloying elements may be added when necessary. No.
OC13Al
00Cr12
Chemical composition of austenite-ferrite steel
Composition, %
Table 4 Chemical composition of ferrite steel
Composition·%
Ti 0. 40~-
A1 0. 14~-
Ti5(C%—
Others"
Al 0. 10-
328092
GcCr17
JCr17Me
0nCr17Mo
QCr18M02
00C130Mu24
oot-27Mo*!
.0.025
Continued Table 4
Chemical content%
.0.035
.0.020
≤.0.020
Note: 1 Except for UUCr30Mo2 and UCt2/Mo steels, other steels are allowed to contain ≤0. 60%Ni,2) 00Cr30M02, 00Cr27M are allowed to contain 0.50%Ni, ≤0.20%Cu, nickel plus copper = 0.50%. In addition, alloy elements other than those in the above table can be added if necessary. N
Others\
Ti Nb 0. 10
Ti.Nh.ZI or sum Bx
(C%+NK>~
Ti.Nb.zr or sum x
(C%-N%)→
2t:r13
1Cr17Ni2
Note: 1) Allowed to contain 4%0.60%i
0. 1 h --
21717 Allowed to contain = 75%M
Table 5 Chemical composition of martensitic steel
Chemical composition
.0.035
≤0. 030
3280—92
oCr17Ni7A1
Table 6 Chemical composition of precipitation hardening steel
Chemical compositionwww.bzxz.net
50, 030
At 0. 75~
3280—
1Cr17Mn6Ni5N
1CrI8Mn8Ni5N
2Cr13Mn9Ni4
1Cr17Ni?
1Cr17Ni8
1Cr18Ni9
1Cr18Ni9Si3
Cr1BNi9
019Ni10
OCr19Ni9N
OCt19Ni1ONbN
OCr18Ni10N
Cr23Ni13
oCr25Ni2D
117Ni12Mo2
G 3280—92
Table of heat treatment system for austenitic steel
High-speed treatment
1010~1120Quick cooling
1010~1120Quick cooling
1080-1130Quick cooling
1010--1150Quick cooling
1 0[0-1 150 Quick cooling
1010--1150Quick cooling
1 010--1 150 Quick cooling
1 010~ 150 Quick cooling
1010~1150Quick cooling
1 010--1 150 Fast cooling
1010～1150 Fast
1010～150 Fast sinking
1010--1 150 Fast cooling
1090～↓50 Fast cooling
1 030--1 1R0 Fast cooling
1 010--1 150 Fast cooling
00Cr17Ni14M02
C11?Ni12Mo2N
0Kt17Ni13M2N
OCr18Ni12Mo2Ti
1Cr18Ni12Mo27
OCr18Vi12Mo2Cu2| |tt||90Cr18Ni14M02Cu2
0Cr18Ni12Mo3Ti
1C-18Ni12M3Ti
Cr19Ni13Mn3
00C+19Ni13M03
CCr18Ni16M0s||tt ||0Cr1gNi10:
ICr18Ni9T
OCr18Ni11Nb
Cr18Vi13Si4
Heat treatment system for austenite-ferrite steel Table 8
00Cr18NisMo3Si2
ICr1SNi1ISi4AFTi
ICr21Ni5T
Cr26N:5Mo2
Table 9 Heat treatment system for ferrite wall steel
oCriaAl
00Ch12
Country fall treatment
1010~1150 Rapid cooling
1 010~1 150 fast cooling
1010-~1150 fast cooling
1050~110 fast cooling
1050~1 100 fast cooling
1010~1150 fast cooling
1 010~1 150 fast cooling
1050~1100 fast cooling
1050~1100 fast cooling
1010~1150 fast
1010~1150 fast cooling
1030~180 fast waiting
920~1150 fast cooling
920~1150 fast cooling
980~1150 fast inspection
11050 fast insurance
solid solution treatment,||t t||95--1050 water cooling
1000~1050 fast
950~1050 fast cooling
950~1100 fast pregnancy
sea fire treatment, C
780~83 block cooling or slow cooling
700~520 fast cooling or slow cooling
780~-350 fast cooling or slow cooling
8050 fast cooling or key
1C17N12
56 DCt.7Ni7Al
1C117Mo
00C17Mo
0oCr18M2
00C130Mn2
00Cr27Mo
GB3280—-92
Continued Table 9
Table 0 Heat treatment system for Hu body type
Heat treatment
About 750 fast cooling or 800--900 slow cooling
About 750 fast cooling or 800~-900 slow cooling
About 750 fast cooling or 600--930 cooling
About 750 fast cooling or 800~900 slow cooling
About 75 0 fast cooling or 800~91 slow cooling
about 750 fast cooling or 800-900 slow cooling
about 750 fast cooling or 800~91 slow cooling
fiber 5℃ fast cooling or 800~90) slow cooling
annealing,
780-950 fast cooling or slow cooling
781~850 fast cooling or cooling
800150 fast cooling
800~1050 fast cooling
801)~1050 fast cooling
900--1050 fast
98[40 fast cooling
1150-1100 oil cooling
110--1 070 Quick cooling
970~7030 Oil cooling
Table! 1 Heat treatment system for precipitation hardening steel Heat treatment
1001~1100 Quick cooling
565 Core aging
510℃ aging
15(1~40 Air cooling
201300
150~-400 Air cooling
275~350
After solution treatment, keep at 760±15 for 90min, cool to below 15℃ within 1h, keep for 3 cmin reheat to 565+10: hold for 90min and then air cool
After the drop treatment, 955=10℃ hold for 11min, air cool to room temperature, cool to 73=6T within 24h, hold for 8b, reheat to 510=10℃ hold for 60min and then air cool 4.3.1 The mechanical properties of austenitic steel plates after solution treatment shall comply with the provisions of Table 12. The mechanical properties of steel plates in different cold work hardening states shall comply with the provisions of Table 13.75~
3280—
1Cr17Mn6Ni5N
1CrI8Mn8Ni5N
2Cr13Mn9Ni4
1Cr17Ni?
1Cr17Ni8
1Cr18Ni9||tt| |1Cr18Ni9Si3
Cr1BNi9
019Ni10
OCr19Ni9N
OCt19Ni1ONbN
OCr18Ni10N
Cr23Ni13
oCr25Ni2D
117Ni12Mo2|| tt||G 3280—92
Table of heat treatment system for austenitic steel
High-speed treatment
1010~1120Quick cooling
1010~1120Quick cooling
1080 -1130 fast cooling
1010--1150 fast cooling
1 0[0-1 150 fast cooling
1010--1150 fast cooling
1 010--1 150 fast drop
1 010~ 150 fast cool
1010~1150 fast cool
1 010--1 150 Fast cooling
1010～1150 Fast
1010～150 Fast sinking
1010--1 150 Fast cooling
1090～↓50 Fast cooling
1 030--1 1R0 Kuai Ling
1 010--1 150 Fast cooling
00Cr17Ni14M02
C11?Ni12Mo2N
0Kt17Ni13M2N
OCr18Ni12Mo2Ti
1Cr18Ni12Mo27
OCr18Vi12Mo2Cu2| |tt||90Cr18Ni14M02Cu2
0Cr18Ni12Mo3Ti
1C-18Ni12M3Ti
Cr19Ni13Mn3
00C+19Ni13M03
CCr18Ni16M0s||tt ||0Cr1gNi10:
ICr18Ni9T
OCr18Ni11Nb
Cr18Vi13Si4
Heat treatment system table of austenite-ferrite steel 8
00Cr18NisMo3Si2||tt| |ICr1SNi1ISi4AFTi
ICr21Ni5T
Cr26N:5Mo2
Table 9 Heat treatment system of ferrite wall steel
oCriaAl
00Ch12
Country fall Processing
1010~1150Quick cooling
1 010~1 150 fast cooling
1010-~1150 fast cooling
1050~110 fast cooling
1050~1 100 fast cooling
1010~1150 fast cooling|| tt||1 010~1 150 fast cooling
1050~1100 fast cooling
1050~1100 fast cooling
1010~1150 fast
1010~1150 fast cooling
1030~180 Fast waiting
920~1150 fast cooling
920~1150 fast cooling
980~1150 fast inspection
11050 fast insurance
solid solution treatment,| |t t||95--1050 water cooling
1000~1050 fast
950~1050 fast cooling
950~1100 fast pregnancy
sea fire treatment, C|| tt||780~83 block cooling or slow cooling
700~520 fast cooling or slow cooling
780~-350 fast cooling or slow cooling
8050 fast cooling or key| |tt||1C17N12
56 DCt.7Ni7Al
1C117Mo
00C17Mo
0oCr18M2
00C130Mn2
00Cr27Mo
GB3280—-92
Continued Table 9
Table 0 Heat treatment system for Hu body
Heat treatment
About 750 fast cooling or 800--900 slow cooling
About 750 fast cooling or 800~-900 slow cooling Cool
About 750 fast cooling or 600--930 cold
About 750 fast cooling or 800~900 slow cooling
About 75 0 fast cooling or 800~9i1 slow cooling
about 75G fast cooling or 800-900 slow cooling
about 750 fast cooling or 800~9J0 slow cooling
fiber 5℃ fast cooling or 800~90) slow cooling
annealing,
780-950 fast cooling or slow cooling
781~850 fast cooling or cooling
800150 fast cooling| |tt||800~1050 fast cooling
801)~1050 fast cooling
900--1050 fast
98[40 fast cooling
1150-1100 oil cooling
110--1 070 Rapid cooling
970~7030 Oil cooling
Table! 1 Heat treatment system for precipitation hardening steel Heat treatment
1001~1100 Rapid cooling
565 Heart aging||tt| |510℃ aging
15(1~40 air modification
201300
150~-400 air cooling
275~350
solid solution treatment , keep at 760±15 for 90min, cool to below 15℃ within 1h, keep for 3 cmin reheat to 565+10: hold for 90min and air cool
after falling treatment, hold at 955=10 for 11min, air cool to room temperature, cool to 73=6T within 24h, hold for 8b, and then heat to 510= 4.3.1 The mechanical properties of austenitic steel plates after solution treatment shall comply with the requirements of Table 12. The mechanical properties of steel plates in different cold work hardening states shall comply with the requirements of Table 13.75~
3280—
1Cr17Mn6Ni5N
1CrI8Mn8Ni5N
2Cr13Mn9Ni4
1Cr17Ni?
1Cr17Ni8
1Cr18Ni9||tt| |1Cr18Ni9Si3
Cr1BNi9
019Ni10
OCr19Ni9N
OCt19Ni1ONbN
OCr18Ni10N
Cr23Ni13
oCr25Ni2D
117Ni12Mo2|| tt||G 3280—92
Table of heat treatment system for austenitic steel
High-speed treatment
1010~1120Quick cooling
1010~1120Quick cooling
1080 -1130 fast cooling
1010--1150 fast cooling
1 0[0-1 150 fast cooling
1010--1150 fast cooling
1 010--1 150 fast drop
1 010~ 150 fast cool
1010~1150 fast cool
1 010--1 150 Fast cooling
1010～1150 Fast
1010～150 Fast sinking
1010--1 150 Fast cooling
1090～↓50 Fast cooling
1 030--1 1R0 Kuai Ling
1 010--1 150 Fast cooling
00Cr17Ni14M02
C11?Ni12Mo2N
0Kt17Ni13M2N
OCr18Ni12Mo2Ti
1Cr18Ni12Mo27
OCr18Vi12Mo2Cu2| |tt||90Cr18Ni14M02Cu2
0Cr18Ni12Mo3Ti
1C-18Ni12M3Ti
Cr19Ni13Mn3
00C+19Ni13M03
CCr18Ni16M0s||tt ||0Cr1gNi10:
ICr18Ni9T
OCr18Ni11Nb
Cr18Vi13Si4
Heat treatment system table of austenite-ferrite steel 8
00Cr18NisMo3Si2||tt| |ICr1SNi1ISi4AFTi
ICr21Ni5T
Cr26N:5Mo2
Table 9 Heat treatment system of ferrite wall steel
oCriaAl
00Ch12
Country fall Processing
1010~1150Quick cooling
1 010~1 150 fast cooling
1010-~1150 fast cooling
1050~110 fast cooling
1050~1 100 fast cooling
1010~1150 fast cooling|| tt||1 010~1 150 fast cooling
1050~1100 fast cooling
1050~1100 fast cooling
1010~1150 fast
1010~1150 fast cooling
1030~180 Fast waiting
920~1150 fast cooling
920~1150 fast cooling
980~1150 fast inspection
11050 fast insurance
solid solution treatment,| |t t||95--1050 water cooling
1000~1050 fast
950~1050 fast cooling
950~1100 fast pregnancy
sea fire treatment, C|| tt||780~83 block cooling or slow cooling
700~520 fast cooling or slow cooling
780~-350 fast cooling or slow cooling
8050 fast cooling or key| |tt||1C17N12
56 DCt.7Ni7Al
1C117Mo
00C17Mo
0oCr18M2
00C130Mn2
00Cr27Mo
GB3280—-92
Continued Table 9
Table 0 Heat treatment system for Hu body
Heat treatment
About 750 fast cooling or 800--900 slow cooling
About 750 fast cooling or 800~-900 slow cooling Cool
About 750 fast cooling or 600--930 cold
About 750 fast cooling or 800~900 slow cooling
About 75 0 fast cooling or 800~9i1 slow cooling
about 75G fast cooling or 800-900 slow cooling
about 750 fast cooling or 800~9J0 slow cooling
fiber 5℃ fast cooling or 800~90) slow cooling
annealing,
780-950 fast cooling or slow cooling
781~850 fast cooling or cooling
800150 fast cooling| |tt||800~1050 fast cooling
801)~1050 fast cooling
900--1050 fast
98[40 fast cooling
1150-1100 oil cooling
110--1 070 Rapid cooling
970~7030 Oil cooling
Table! 1 Heat treatment system for precipitation hardening steel Heat treatment
1001~1100 Rapid cooling
565 Heart aging||tt| |510℃ aging
15(1~40 air modification
201300
150~-400 air cooling
275~350
solid solution treatment , keep at 760±15 for 90min, cool to below 15℃ within 1h, keep for 3 cmin reheat to 565+10: hold for 90min and air cool
after falling treatment, hold at 955=10 for 11min, air cool to room temperature, cool to 73=6T within 24h, hold for 8b, and then heat to 510= 4.3.1 The mechanical properties of austenitic steel plates after solution treatment shall comply with the requirements of Table 12. The mechanical properties of steel plates in different cold work hardening states shall comply with the requirements of Table 13.
ICr18Ni9T
OCr18Ni11Nb
Cr18Vi13Si4
Heat treatment system for austenite-ferrite steel Table 8
00Cr18NisMo3Si2
ICr1SNi1ISi4AFTi
ICr21Ni5T
Cr26N:5Mo2
Table 9 Heat treatment system for ferrite steel
oCriaAl
00Ch12
Falling treatment
1010~1150Quick cooling
1 010~1 150 Fast cooling
1010-~1150Fast cooling
1050~110Fast cooling
1050~1 100 Fast cooling
1010~1150Fast cooling
1 010~1 150 fast cooling
1050~1100 fast cooling
1050~1100 fast cooling
1010~1150 fast
1010~1150 fast cooling
1030~180 fast waiting
920~1150 fast cooling
920~1150 fast cooling
980~1150 fast inspection
11050 fast insurance
solid solution treatment,||t t||95--1050 water cooling
1000~1050 fast
950~1050 fast cooling
950~1100 fast pregnancy
sea fire treatment, C
780~83 block cooling or slow cooling
700~520 fast cooling or slow cooling
780~-350 fast cooling or slow cooling
8050 fast cooling or key
1C17N12
56 DCt.7Ni7Al
1C117Mo
00C17Mo
0oCr18M2
00C130Mn2
00Cr27Mo
GB3280—-92
Continued Table 9
Table 0 Heat treatment system for Hu body type
Heat treatment
About 750 fast cooling or 800--900 slow cooling
About 750 fast cooling or 800~-900 slow cooling
About 750 fast cooling or 600--930 cooling
About 750 fast cooling or 800~900 slow cooling
About 75 0 fast cooling or 800~91 slow cooling
about 750 fast cooling or 800-900 slow cooling
about 750 fast cooling or 800~91 slow cooling
fiber 5℃ fast cooling or 800~90) slow cooling
annealing,
780-950 fast cooling or slow cooling
781~850 fast cooling or cooling
800150 fast cooling
800~1050 fast cooling
801)~1050 fast cooling
900--1050 fast
98[40 fast cooling
1150-1100 oil cooling
110--1 070 Quick cooling
970~7030 Oil cooling
Table! 1 Heat treatment system for precipitation hardening steel Heat treatment
1001~1100 Quick cooling
565 Core aging
510℃ aging
15(1~40 Air cooling
201300
150~-400 Air cooling
275~350
After solution treatment, keep at 760±15 for 90min, cool to below 15℃ within 1h, keep for 3 cmin reheat to 565+10: hold for 90min and then air cool
After the drop treatment, 955=10℃ hold for 11min, air cool to room temperature, cool to 73=6T within 24h, hold for 8b, reheat to 510=10℃ hold for 60min and then air cool 4.3.1 The mechanical properties of austenitic steel plates after solution treatment shall comply with the provisions of Table 12. The mechanical properties of steel plates in different cold work hardening states shall comply with the provisions of Table 13.
ICr18Ni9T
OCr18Ni11Nb
Cr18Vi13Si4
Heat treatment system for austenite-ferrite steel Table 8
00Cr18NisMo3Si2
ICr1SNi1ISi4AFTi
ICr21Ni5T
Cr26N:5Mo2
Table 9 Heat treatment system for ferrite steel
oCriaAl
00Ch12
Falling treatment
1010~1150Quick cooling
1 010~1 150 Fast cooling
1010-~1150Fast cooling
1050~110Fast cooling
1050~1 100 Fast cooling
1010~1150Fast cooling
1 010~1 150 fast cooling
1050~1100 fast cooling
1050~1100 fast cooling
1010~1150 fast
1010~1150 fast cooling
1030~180 fast waiting
920~1150 fast cooling
920~1150 fast cooling
980~1150 fast inspection
11050 fast insurance
solid solution treatment,||t t||95--1050 water cooling
1000~1050 fast
950~1050 fast cooling
950~1100 fast pregnancy
sea fire treatment, C
780~83 block cooling or slow cooling
700~520 fast cooling or slow cooling
780~-350 fast cooling or slow cooling
8050 fast cooling or key
1C17N12
56 DCt.7Ni7Al
1C117Mo
00C17Mo
0oCr18M2
00C130Mn2
00Cr27Mo
GB3280—-92
Continued Table 9
Table 0 Heat treatment system for Hu body type
Heat treatment
About 750 fast cooling or 800--900 slow cooling
About 750 fast cooling or 800~-900 slow cooling
About 750 fast cooling or 600--930 cooling
About 750 fast cooling or 800~900 slow cooling
About 75 0 fast cooling or 800~91 slow cooling
about 750 fast cooling or 800-900 slow cooling
about 750 fast cooling or 800~91 slow cooling
fiber 5℃ fast cooling or 800~90) slow cooling
annealing,
780-950 fast cooling or slow cooling
781~850 fast cooling or cooling
800150 fast cooling
800~1050 fast cooling
801)~1050 fast cooling
900--1050 fast
98[40 fast cooling
1150-1100 oil cooling
110--1 070 Quick cooling
970~7030 Oil cooling
Table! 1 Heat treatment system for precipitation hardening steel Heat treatment
1001~1100 Quick cooling
565 Core aging
510℃ aging
15(1~40 Air cooling
201300
150~-400 Air cooling
275~350
After solution treatment, keep at 760±15 for 90min, cool to below 15℃ within 1h, keep for 3 cmin reheat to 565+10: hold for 90min and then air cool
After the drop treatment, 955=10℃ hold for 11min, air cool to room temperature, cool to 73=6T within 24h, hold for 8b, reheat to 510=10℃ hold for 60min and then air cool 4.3.1 The mechanical properties of austenitic steel plates after solution treatment shall comply with the provisions of Table 12. The mechanical properties of steel plates in different cold work hardening states shall comply with the provisions of Table 13.
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