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Engineering Structural Steel Material Standard GB/T
11352-1989
This is a China standard for the chemical
analysis and mechanical properties of engineering structural steel.
It has higher strength, mechanical properties, shock resistance and
corrosion resistance. Engineering structural steel is mainly used to
manufacture a wide range of engineering structures, such as the
bridge, hull, steel rail, high-pressure vessel and construction
steel structure, and so on.
The following is the main content of GB/T 11352-1989 standard for
your reference.
The steel number and
chemical analysis of engineering structural steel (mass fraction)
(%)
|
Steel number
|
Steel number
of the old type |
C |
Si |
Mn |
P
≤ |
S
≤ |
Residual element
(≤) |
|
ZG200-400 |
ZG15 |
<=0.20 |
<=0.50 |
<=0.80 |
0.040 |
0.040 |
Cr<=0.35
Ni<=0.30
Mo<=0.20
Cu<=0.30
V<=0.05 |
|
ZG230-450 |
ZG25 |
<=0.30 |
<=0.50 |
<=0.90 |
0.040 |
0.040 |
|
ZG270-500 |
ZG35 |
<=0.40 |
<=0.50 |
<=0.90 |
0.040 |
0.040 |
|
ZG310-570 |
ZG45 |
<=0.50 |
<=0.60 |
<=0.90 |
0.040 |
0.040 |
|
ZG340-640 |
ZG55 |
<=0.60 |
<=0.60 |
<=0.90 |
0.040 |
0.040 |
The mechanical properties
of engineering structural steel
|
Steel number |
Heat treatment |
Mechanical
properties (no less than) |
|
Normalization or
anneal temperature
/ ℃ |
Tempering
temperature
/ ℃ |
σ
/MPa |
σ
/MPa |
δ
(%) |
ψ
(%) |
AKV
J |
Akv
/ (J/cm2) |
|
ZG200-400 |
920－940 |
------ |
400 |
200 |
25 |
40 |
30 |
6.0 |
|
ZG230-450 |
890-910 |
620-680 |
450 |
230 |
22 |
32 |
25 |
4.5 |
|
ZG270-500 |
880-900 |
620-680 |
500 |
270 |
18 |
25 |
22 |
3.5 |
|
ZG310-570 |
870-890 |
620-680 |
570 |
310 |
15 |
21 |
15 |
3.0 |
|
ZG340-640 |
840-860 |
620-680 |
640 |
340 |
10 |
18 |
10 |
2.0 |
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