上海电力R517焊条
|
元 素 |
C |
Mn |
Si |
S |
P |
Cr |
Mo |
V |
Nb |
|
标准值 |
≤0.12 |
0.50~ 0.90 |
≤0.50 |
≤0.030 |
≤0.035 |
4.50~ 6.00 |
0.80~ 1.10 |
0.15~ 0.40 |
0.10~ 0.25 |
熔敷金属力学性能（焊后750℃±15℃×5h回火处理）
|
试验项目 |
抗拉强度 Rm / MPa |
屈服强度 ReL / MPa |
伸长率 A / % |
常温 冲击吸收功 AKV / J |
|
标准值 |
≥540 |
≥440 |
≥14 |
≥27 |
X射线探伤：Ⅰ级。
药皮含水量或熔敷金属扩散氢含量：≤0.30%或≤4.0mL/100g（甘油法）。
参考电流（DC+）
|
焊条直径 / mm |
2.5 |
3.2 |
4.0 |
5.0 |
|
焊接电流 / A |
60~90 |
90~120 |
130~170 |
170~210 |
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