KR AH 70| KR Grade AH 70| R AH70| Steel Plate
2011年11月24日 by admin
KR AH 70 is applied to extra high strength steels, which is defined as steel with specified min yield stress of 420Mpa. The max yield is 690Mpa in KR AH 70.
Gangsteel is specialized in Super thickness steel grade. We have much experience in manufacture and exporting extra high strength steel grade.
For more information in KR AH 70 steel grade, please refer to the following:
KR AH 70 Chemical composition heat analysis
| Element | KR AH 70 Max % |
| C | 0.21 |
| Mn | 1.70 |
| Si | 0.55 |
| S | 0.035 |
| P | 0.035 |
| N | 0.020 |
Other alloy elements should be along with KR Society Classification requirement.
KR AH 70 Mechanical properties, longitudinal min impact energy
| Grade | Thickness | Yield Strength | Tensile Strength | Elongation | Impact Energy |
| (mm) | MPa (min) | MPa | % (min) | (KV J) (min) | |
| | | | | 0 degree | |
| KR AH 70 | 8-260 | 690 | 770-940 | 14 | 46J |
Note: the impact energy under less 150mm thickness
Related Grade: NV A690 | BV A420
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