Reference standard
EN 10250-3: 2000 Open steel die forgings for general engineering purposes. Alloy special steels
Application
Commonly used in industries such as offshore, marine, food, paper mills, oil field and aerospace. 30CrMoV9 used components such as fasteners, couplings, scres, bushings, studs, fittings, value stems, roller, wear rings.
Chemical composition
| C | Si | Mn | Ni | P | S | Cr | Mo | V |
| 0.26 – 0.34 | max 0.4 | 0.4-0.7 | max 0.6 | max 0.035 | max 0.035 | 2.3-2.7 | 0.15-0.25 | 0.1-0.2 |
Equivalent Grades
| EU | Russia | Inter |
| EN | GOST | ISO |
| 30CrMoV9 | 30KH3MF | 30CrMoV9 |
Size Tolerance
| Surface Finish | Size Tolerance | Length |
| Black For Forged condition | (0，+5 mm) | Multiple Length/Fixed Length |
| Black For Rolled condition | (0，+1mm) | |
| Rough Turned | (0，+3mm) |
Mechanical properties
- Tensile Strength:min 800 N/mm2
- Yield Strength:min. 590N/mm2
- Elongation:min.12 %(l)
- Kv-Imapct value:min.35J (l)
Heat Treatment Conditions
- +A Soft annealed/Soft annealing
- +N Normalized/Normalizing
- +QT Quenched and Tempered
- +U Untreated
- +SR Stress Relieved
Normalizing:860℃-900℃,Cool in air
Soft Annealing:680℃-720℃,Cool slowly
Hardening:850 – 880°C,oil or polymer,840-850°C,water
Tempering:570°C – 680°C, cool in still air
