High Strength Plate( Q390,Q420 )

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Product
Code
Spec.
Usage
TH(mm)
W(m)
L(m)
 
 
A
 
1.5-3.5
 
 
 
 
B
 
 
 
Q390
C
8--80
 
 
 
 
D
 
 
 
 
E
 
 
 
 
Q420
A
 
1.5-3.5
 
 For engineering machinery, steel structures, bridges, construction industries.Have good strength, toughness and welding performance.
High Strength Plate
B
 
GB3274-88
C
8--80
 
GB1591-94
D
 
 
E
 
 
 
AH60
A
1.5-3.5
 
 
B
8--80
 
C
 
D
 
 
Q460
C
 
8--80
 
D
 
E
 
AH70DB
D
 
8--80
 
E

1.1Product Steel Code and Usage:

Product
Steel Code
Meaning of Steel Code
The Implementation of Standards
Usage
Low-alloy,High Strength Steel Plate
Q390
Q-the first Letter of the Chinese word 'QU'-Yield Strength
GB/T1591-94
For engineering machinery
 
For engineering machinery
Q420
 
For engineering machinery
 
 
Q460
 
Mines and various types of construction used in the drill, power shovel, electric wheel anti-Doo, mining vehicles, excavators, loaders, bulldozers, all types of cranes, coal powered support equipment and other pieces of the structure.
 
 
AH60
AH-Anyang Steel
 
High Strength Steel:60
 
70-Tensile Strength
Enterprise Standard
AH70DB
Stength Level60,70 means Kg

Or
Technology Agreement
 
Grade
 
 
 

1.2Technical Requirements:

Code
Grade
C
Mn
Si
P
S
V
Nb
Ti
AL
Cr
Ni
≤
≤
≤
≤
≥
≤
≤
Q390
A
0.2
1.0-1.6
0.55
0.045
0.045
0.02--0.2
0.015-0.06
0.02-0.02
 
0.3
0.7
B
0.04
0.04
0.02--0.2
0.015-0.06
0.02-0.02
 
0.3
0.7
C
0.035
0.035
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.3
0.7
D
0.03
0.03
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.3
0.7
E
0.025
0.025
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.3
0.7
Q420
A
0.2
1.0-1.7
0.55
0.045
0.045
0.02--0.2
0.015-0.06
0.02-0.02
 
0.4
0.7
B
0.2
1.0-1.7
0.55
0.04
0.04
0.02--0.2
0.015-0.06
0.02-0.02
 
0.4
0.7
C
0.2
1.0-1.7
0.55
0.035
0.035
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.4
0.7
D
0.2
1.0-1.7
0.55
0.03
0.03
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.4
0.7
E
0.2
1.0-1.7
0.55
0.025
0.025
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.4
0.7
Q460
C
0.2
1.0-1.7
0.55
0.035
0.035
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.7
0.7
D
0.2
1.0-1.7
0.55
0.03
0.03
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.7
0.7
E
0.2
1.0-1.7
0.55
0.025
0.025
0.02--0.2
0.015-0.06
0.02-0.02
0.015
0.7
0.7
AH60
 
C
Si
Mn
P
S
Nb
V
Ti
Al,Cr,Ni
 
0.13--0.19
0.15--0.5
1.2-1.6
≤0.035
≤0.035
0.015-0.06
0.02-0.2
 
,Cu,Mo,B
AH70DB
 
≤0.12
0.12-0.5
1.2-1.85
≤0.025
≤0.025
0.015-0.1
≤0.20
≤0.30
Appropriate
 
 

 

AH60
C
Si
Mn
P
S
Nb
V
0.13-0.19
0.15-0.50
1.2-1.60
≤0.035
≤0.035
0.015-0.060
0.02-020

 

AH70DB
C
Si
Mn
P
S
Nb
V
Ti
Al,Cr,Ni
,Cu,Mo,B
≤0.12
0.12-0.50
1.20-1.85
≤0.025
≤0.025
0.015-0.100
≤0.20
≤0.30
Apropriate

1.3 Mechanical Properties:

Code
Grade
Yield Point¢,Mpa
 Tensile Strength
¢b
Elongation Percent
Vertical Impact Energy
AKV,J(℃)
180℃
Bending test
d=Bend Diameter
   ≤16
 >16-35
 >35-50
   Mpa
20
0
-20
-40
a=Specimen Thichness
Not less than
 
Not less than
  ≤16
 >16
Q390
A
390
370
350
  490-650
18
 
 
 
 
2a
3a
B
390
370
350
  490-650
18
34
 
 
 
2a
3a
C
390
370
350
  490-650
19
 
34
 
 
2a
3a
D
390
370
350
  490-650
19
 
 
34
 
2a
3a
E
390
370
350
  490-650
19
 
 
 
27
2a
3a
Q420
A
420
400
380
520-680
17
 
 
 
 
2a
3a
B
420
400
380
520-680
17
34
 
 
 
2a
3a
C
420
400
380
520-680
18
 
34
 
 
2a
3a
D
420
400
380
520-680
18
 
 
34
 
2a
3a
E
420
400
380
520-680
18
 
 
 
27
2a
3a
AH60
A
460
440
420
≥570
16
 
 
 
 
2a
3a
B
460
440
420
≥570
16
34
 
 
 
2a
3a
C
460
440
420
≥570
16
 
34
 
 
2a
3a
D
460
440
420
≥570
16
 
 
34
 
2a
3a
Q460
C
460
440
420
550-720
16
 
34
 
 
2a
3a
D
460
440
420
550-720
16
 
 
34
 
2a
3a
E
460
440
420
550-720
16
 
 
 
27
2a
3a
AH70DB
 
550
 
 
16
 
 
47
 
3a

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