Common welding material drying temperature and retention time
| Type | Note | Low temperature steel welding rod. |
Time ( H ) |
| Carbon steel and low alloy steel welding rod. | J422 | 150 | I |
| J426 | 300 | 1 | |
| J427 | 350 | 1 | |
| J502 | 150 | 1 | |
| J506 J507 |
350 | 1 | |
| J506RH J507RH |
350~430 | I | |
| J507MoW | 350 | 1 | |
| J557 | 350 | 1 | |
| J556RH | 400 | I | |
| J606 J607 |
350 | 1 | |
| J607RH | 350~430 | 1 | |
| J707 | 350 | 1 | |
| J707RH | 400 | two | |
| Low temperature steel welding rod. | W607 W707 |
350 | 1 |
| Molybdenum Chromoly Heat Resistant Steel Welding Rod | R207 R307 |
350 | I |
| R307H | 400 | 1 | |
| R317 R407 R507 |
350 | 1 | |
| Chrome Nickel Stainless Steel Welding Rod | A102 | 150 | 1 |
| A107 | 250 | 1 | |
| A132 | 150 | 1 | |
| A137 | 250 | 1 | |
| A202 | 150 | 1 | |
| A207 | 250 | I | |
| A002 A022 A212 A242 |
150 | 1 |
Recommended preheat temperature for common steel grades
| Steel Grade |
Thickness ( mm ) |
Preheating temperature, (℃) |
| 20G 20 20R 20g |
30~50 | ≥50 |
| >50~100 | ≥100 | |
| 100 | ≥150 | |
| 16MnD 09MnNiD16MnDR 09MnNiDR15MnNiDR |
≥30 | ≥50 |
| 16 minutes 16MnR15MnVR 15MnNbR |
30~50 | ≥100 |
| >50 | ≥150 | |
| 20MnMo 20MnMoD 08MnNiCrMoVD |
Any thickness | ≥100 |
| 07MnCrMoVR 07MnNiCrMoVDR |
16~30 | ≥60 |
| >30~40 | ≥80 | |
| >40~50 | ≥100 | |
| 13MnNiMoNbR | Any thickness | ≥150 |
| 18MnMoNbR | ≥180 | |
| 20MnMoNb | Any thickness | ≥200 |
| 12CrMo 15CrMo12CrMoG 15CrMoR15CrMoG |
>10 | ≥150 |
| 12CrlMoV 12CrlMoVG 14CrlMoR 14CrlMo 12Cr2Mo 12Cr2M01 12Cr2MoG 12Cr2M01R |
>6 | ≥200 |
| 1Cr5Mo | Any thickness | ≥250 |
