1.
2.
2.1
2.2
2.2.1
2.2.2
2.2.3
2.2.4卡片需记录钢板不平度的实测值。
2.3
2.4
2.5
表1
板厚 |
毛边余量 |
<80 |
≥40 |
≥80~150 |
≥50 |
≥150~305 |
≥60 |
2.6
钢板按理论重量交货,钢板宽度以钢板头、中、尾三处宽度的平均值减去最小毛边余量为钢板的计重宽度;钢板长度以实际长度减去最小长度公差为计重长度。板厚<100mm钢板,厚度附加值为0.5mm;厚度≥100mm钢板,厚度附加值为1.0mm。钢板按GB247之规定进行标记。
2.7
3.
3.1
3.2
3.4
表3
项目 |
布氏硬度(HB) |
||||||
P20M |
P20H |
718 |
2311 |
2738 |
P80A |
DIMO |
|
交货 硬度 |
280~330 |
265~310 |
290~340 |
280~340 |
280~340 |
340~400 |
260~ 320 |
硬度同板差 |
≤35 |
≤35 |
≤3 |
≤35 |
≤30 |
≤35 |
≤40 |
钢种 |
化学成分 |
||||||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
V |
Cu |
Al |
|
P20M P20H |
0.32~0.40 |
0.30~0.50 |
1.00~1.50 |
≤0.017 |
≤0.005 |
1.50~2.00 |
0.40~0.50 |
/ |
/ |
≤ 0.22 |
/ |
718 |
0.32~0.40 |
0.30~0.50 |
1.00~1.50 |
≤0.016 |
≤0.005 |
1.50~2.00 |
0.40~0.50 |
0.80~1.20 |
/ |
≤ 0.22 |
/ |
2311 |
0.34~0.42 |
0.30~0.50 |
1.10~1.50 |
≤0.016 |
≤0.005 |
1.50~2.00 |
0.40~0.50 |
0.20~0.40 |
≤0.10 |
≤ 0.22 |
/ |
2738 |
0.34~0.42 |
0.30~0.50 |
1.10~1.50 |
≤0.016 |
≤0.005 |
1.60~2.00 |
0.40~0.50 |
0.80~1.30 |
≤0.10 |
≤ 0.22 |
/ |
P80A |
0.10~0.20 |
≤0.35 |
1.70~2.00 |
≤0.015 |
≤0.005 |
0.70~1.00 |
0.20~0.50 |
2.90~3.40 |
/ |
0.80~1.20 |
0.70~1.10 |
DIMO 42H |
0.38~0.46 |
0.15~0.40 |
0.70~1.70 |
≤0.018 |
≤0.005 |
0.75~1.20 |
0.15~0.30 |
/ |
≤0.10 |
≤ 0.22 |
/ |