结构用钢板 Structural steel plate
1、规格、牌号及交货状态 size ,grade and delivery condition :
钢种分类classify |
执行标准standard |
牌号Grade |
产品规格size (mm) |
交货状态 Condition |
碳素结构钢 Carbon structural steel |
GB/T3274、GB/T700、GB/T1591、EN 10025、ASTM、JIS G3106 |
Q235A~D、Q275A~D、S235J2、S235JO、S235JR、S275JR、A36、SS400、 A283、A285 |
6-100*1600-3200 |
AR、CR、TMCP、N |
低合金结构钢 low alloy structural steel |
Q345A~E、Q390D、Q420B、Q460C~E、S355JR、S355K2、S355NL、S355M、S355ML、S420M、S460M、SM490 A709Gr50 |
6-80*1600-3200 |
AR、CR、TMCP、N、QT |
高层建筑结构钢 High-rise building structural steel |
GB/T19879 |
Q345GJB/C/D(Z35)、Q390GJB/C/D(Z35) |
6-80*1600-3200 |
AR、CR、TMCP、N |
优质碳素结构钢 high quality carbon structure steel |
GB/T711、GB/T3077、JIS G4051 |
35#、45#、50#、40Cr、S45C |
6-200*1600-2500 |
AR |
2、牌号国外对照表 Grade comparison :
钢种分类 classify |
国标 GB |
日标 JIS |
美标ASTM |
欧标EN |
碳素结构钢 Carbon structural steel |
Q235A/B/C/D |
|
A283、A285 |
S235J2、S235JO、S235JR |
Q275A/B/C/D |
SS400 |
A36 |
S275J2、S275JO 、S275JR |
低合金结构钢 low alloy structural steel |
Q345A/B/C/D/E |
SM490 |
A709-345T2、A709Gr50 |
S355JR、S355K2、S355NL、S355ML |
Q460C/D/E |
SM570 |
|
S460ML、S460QL |
优质碳素结构钢 high quality carbon structure steel |
35#、45#、50#、40Cr |
S45C、S50C |
|
|
3、化学成分 chemical composition :wt%
⑴、碳素结构钢 Carbon structural steel
牌号Grade |
质量等级 class |
厚度 thickness /mm |
化学成分chemical composition %≤ |
C |
Mn |
Si |
P |
S |
Q235 |
A |
- |
0.22 |
1.4 |
0.35 |
0.045 |
0.05 |
B |
0.2 |
0.045 |
0.045 |
C |
0.17 |
0.04 |
0.04 |
D |
0.035 |
0.035 |
Q275 |
A |
- |
0.24 |
1.5 |
0.35 |
0.045 |
0.05 |
B |
≤40 |
0.21 |
0.045 |
0.045 |
>40 |
0.22 |
C |
- |
0.2 |
0.04 |
0.04 |
D |
0.2 |
0.035 |
0.035 |
⑵、低合金结构钢 low alloy structural steel
牌号 Grade |
质量等级 class |
C |
Mn |
Si |
P |
S |
V |
Nb |
Ti |
≤ |
Q345 |
A |
≤0.20 |
≤1.70 |
≤0.50 |
0.035 |
0.035 |
0.15 |
0.07 |
0.2 |
B |
0.035 |
0.035 |
C |
0.03 |
0.03 |
D |
≤0.18 |
0.03 |
0.03 |
E |
0.025 |
0.025 |
Q390 |
A |
≤0.20 |
≤1.70 |
≤0.50 |
0.035 |
0.035 |
0.2 |
0.07 |
0.2 |
B |
0.035 |
0.035 |
C |
0.03 |
0.03 |
D |
0.03 |
0.025 |
E |
0.025 |
0.02 |
Q420 |
A |
≤0.20 |
≤1.70 |
≤0.50 |
0.035 |
0.035 |
0.2 |
0.07 |
0.2 |
B |
0.035 |
0.035 |
C |
0.03 |
0.03 |
D |
0.03 |
0.025 |
E |
0.025 |
0.02 |
Q460 |
C |
≤0.20 |
≤1.80 |
≤0.60 |
0.03 |
0.03 |
0.2 |
0.11 |
0.2 |
|
|
|
|
|
|
⑶、高层建筑结构钢 High-rise building structural steel
牌号Grade |
质量等级 class |
C |
Mn |
Si |
P |
S |
V |
Nb |
Ti |
≤ |
Q345GJ |
B |
≤0.20 |
≤1.60 |
≤0.55 |
0.025 |
0.015 |
0.15 |
0.06 |
0.3 |
C |
D |
≤0.18 |
0.02 |
0.015 |
E |
Q390GJ |
C |
≤0.20 |
≤1.60 |
≤0.55 |
0.025 |
0.015 |
0.15 |
0.06 |
0.3 |
D |
E |
≤0.18 |
0.02 |
0.015 |
⑷、优质碳素结构钢 high quality carbon structure steel
牌号 Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Cu |
≤ |
35 |
0.32-0.39 |
0.50-0.80 |
0.17-0.37 |
0.035 |
0.035 |
0.2 |
0.3 |
0.25 |
45 |
0.42-0.50 |
0.50-0.80 |
0.17-0.37 |
0.035 |
0.035 |
0.2 |
0.3 |
0.25 |
50 |
0.47-0.55 |
0.50-0.80 |
0.17-0.37 |
0.035 |
0.035 |
0.2 |
0.3 |
0.25 |
40Cr |
0.37-0.44 |
0.50-0.80 |
0.17-0.37 |
0.035 |
0.035 |
0.80-1.10 |
0.3 |
0.25
|
4、性能指标mechanical properties :
⑴、碳素结构钢 carbon structural steel
牌号Grade |
质量等级class |
下屈服强度yield strength ReL,MPa |
抗拉强度 tensile |
伸长率 elongation A, |
冲击功impact ,KV2(纵向 L)/J |
厚度thickness mm |
Rm, |
% |
≤16 |
>16~40 |
>40~60 |
>60~100 |
>100~150 |
MPa |
≤40 |
>40~60 |
>60~100 |
温度 temperature |
最小值 min |
不小于≥ |
|
不小于≥ |
Q235 |
A |
235 |
225 |
215 |
195 |
185 |
370~500 |
26 |
25 |
24 |
- |
- |
B |
20 |
27 |
C |
0 |
D |
-20 |
Q275 |
A |
375 |
265 |
255 |
245 |
225 |
410~540 |
22 |
21 |
20 |
- |
- |
B |
20 |
27 |
C |
0 |
D |
-20 |
⑵、低合金结构钢 low alloy structural steel
牌号Grade |
质量等级class |
下屈服强度 yield strength ReL,MPa |
抗拉强度 |
伸长率elongation A, |
冲击功impact,KV2(纵向L)/J |
厚度thickness ,mm |
Rm,MPa |
% |
≤16 |
>16~40 |
>40~63 |
>63~80 |
>80~100 |
|
≤40 |
>40~63 |
>63~100 |
温度Temperature |
最小值Min |
不小于≥ |
|
不小于≥ |
Q345 |
A |
345 |
335 |
325 |
315 |
305 |
470~630 |
20 |
19 |
19 |
- |
- |
B |
20 |
34 |
C |
21 |
20 |
20 |
0 |
D |
-20 |
E |
-40 |
Q390 |
A |
390 |
370 |
350 |
330 |
310 |
490~650 |
20 |
19 |
19 |
- |
- |
B |
20 |
34 |
C |
0 |
D |
-20 |
E |
-40 |
Q420 |
A |
420 |
400 |
380 |
360 |
340 |
520~680 |
19 |
18 |
18 |
- |
- |
B |
20 |
34 |
C |
0 |
D |
-20 |
E |
-40 |
Q460 |
C |
460 |
440 |
420 |
400 |
380 |
550~720 |
17 |
16 |
16 |
0 |
34 |
D |
-20 |
E |
-40 |
⑶、高层建筑结构钢 high-rise building structural steel
牌号 Grade |
质量等级 class |
下屈服强度 yield ReL,MPa |
抗拉强度tensile |
伸长率elongation A, |
冲击功impact ,KV2 |
屈强比yield ratio |
厚度 thickness ,mm |
Rm, |
% |
(纵向L)/J |
不大于≤ |
≤16 |
>16~35 |
>35~50 |
>50~100 |
MPa |
不小于≥ |
温度 temperature |
最小值min |
|
不小于≥ |
|
|
Q345GJ |
B |
345 |
345-465 |
335-455 |
325-445 |
490~610 |
22 |
20 |
34 |
0.83 |
C |
0 |
D |
-20 |
E |
-40 |
Q390GJ |
C |
390 |
390-510 |
380-500 |
370-490 |
490~650 |
20 |
0 |
34 |
0.85 |
D |
-20 |
D |
-40 |
E |