上海電力R517焊條
|
元 素 |
C |
Mn |
Si |
S |
P |
Cr |
Mo |
V |
Nb |
|
標準值 |
≤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 |
熔敷金屬力學性能（焊后750℃±15℃×5h回火處理）
|
試驗項目 |
抗拉強度 Rm / MPa |
屈服強度 ReL / MPa |
伸長率 A / % |
常溫 沖擊吸收功 AKV / J |
|
標準值 |
≥540 |
≥440 |
≥14 |
≥27 |
X射線探傷：Ⅰ級。
藥皮含水量或熔敷金屬擴散氫含量：≤0.30%或≤4.0mL/100g（甘油法）。
參考電流（DC+）
|
焊條直徑 / mm |
2.5 |
3.2 |
4.0 |
5.0 |
|
焊接電流 / A |
60~90 |
90~120 |
130~170 |
170~210 |
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