LR DH 69 steel grade | LR DH69 | DH69
2011年11月8日 by admin
LR DH 69 steel grade.
LR DH 69 steel grade shall be killed and find grain treated. Steel grade of strength levels up to and including 500Mpa should be supplied in Normalized, TM or QT condition. Steel grade of strength levels above 500Mpa shall be supplied in TM or QT delivery condition.
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 LR DH 69 steel grade, please refer to the following:
LR DH 69 Chemical composition heat analysis
| Element | LR DH 69 Max % |
| C | 0.20 |
| Mn | 1.70 |
| Si | 0.55 |
| S | 0.030 |
| P | 0.030 |
| N | 0.020 |
Other alloy elements should be along with GL Society Classification requirement.
LR DH 69 Mechanical properties, longitudinal min impact energy
| Grade | Thickness | Yield Strength | Tensile Strength | Elongation | Impact Energy |
| (mm) | MPa (min) | MPa | % (min) | (KV J) (min) | |
| | | | | -20 degree | |
| LR DH 69 | 8-260 | 690 | 770-940 | 14 | 46J |
Note: the impact energy under less 150mm thickness
Related Grade: NV D690 | BV D420
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