China · GB
Q650XT
GB/T 33963:2017 — Steel plates and sheets for truck carriage
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Als | 0.01 | 当采用全铝(Alt)含量计算时，全铝含量应不小于0.015%。 | 当采用全铝(Alt)含量计算时，全铝含量应不小于0.015%。 | |
| B | 0.005 | Nb+V+Ti≤0.22% | Nb+V+Ti≤0.22% | |
| C | 0.12 | |||
| Mn | 2 | |||
| Mo | 0.5 | Nb+V+Ti≤0.22% | Nb+V+Ti≤0.22% | |
| Nb | 0.09 | |||
| P | 0.025 | |||
| S | 0.015 | |||
| Si | 0.6 | |||
| Ti | 0.15 | Nb+V+Ti≤0.22% | Nb+V+Ti≤0.22% | |
| V | 0.2 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| plates and strip, hot rolled | ≥650 试样厚度>8mm，则最低屈服强度可下调20MPa。 | 700–880 | ||||
| plates and strip, hot rolled, t < 3mm, t | ≥10 Lo=80mm | |||||
| plates and strip, hot rolled, t >= 3mm, t | ≥12 |
High/low temperature
| Condition | Temperature ℃ | min |
|---|---|---|
| steel plates and strips hot rolled | -20 | 27 |