PN2500超高压阀门和管件 力学性能
| 材料编号 | 抗拉强度 Rm/MPa | 下屈服强度 ReL/MPa | 伸长率A (%) | 断面收缩率Z (%) | 冲击吸收能量 K/J | 硬度 HBW | 
| 20Cr13 | ≥784 | ≥588 | ≥16 | ≥50 | ≥68.6 | ≤248 | 
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