High Tensile Nickel Chrome Steel
Standard
US: ASTM A29 4340
Jerman: DIN 1.6582 34CrNiMo6
JEPANG: JIS G4103 SNCM439
British: BS 970 817M40
Eropa: EN 10250 34NiCrMo6
China: AISI 4340
Characteristics
It has high hardenability and is capable of giving good properties in large sections. It is relatively free from temper brittleness and retains useful machinability at relatively high hardness.
Standard & Eguivalent Ni Cr-Mo Steel
| Standard | Maker/ Brand | ||||||
| DIN | JIS | AISI | Assab | Bohler | Sanyo | Thyssen | Hitachi |
| 1.6582 | SNCM 439 | 4340 | 705 | VCN 150 | SNCM439 | 6582 | SNCM439 |
| 1.6523 | SNCM 220 | 8620 | – | – | – | – | – |
Availability
Round bar
Diameter : 20mm – 390mm
Standar Length : 6010mm
Chemical composition: ( % )
| GRADE | C | Si | Mn | P | S | Cr | Ni | Mo |
| SNCM 439 | 0.36-0.43 | 0.15-0.35 | 0.60-0.90 | 0.030 Max | 0.030 Max | 0.60-1.00 | 1.60-2.00 | 0.15-0.30 |
| VCN 150 | 0.38-0.38 | 0.20-0.35 | 0.60-0.80 | 0.040 Max | 0.040 Max | 0.70-0.90 | 1.65-2.00 | 0.20-0.30 |
| 6582 | 0.30-0.38 | 0.15-0.40 | 0.50-0.80 | 0.035 Max | 0.035 Max | 1.30-1.70 | 1.30-1.70 | 0.15-0.30 |
Heat Treatment
| Heat Treatment (°C) | SNCM 439 | 6582 |
| Normalizing | 820 – 870 Air Cooling | 850 – 880 |
| Annealing | 820 – 870 Slow Cooling | 650 – 700 |
| Quenching | 810 – 860 Oil Cooling | – |
| Tempering | 180 – 200 | 540 – 680 |
| Hardening | – | 830 – 860 Oil/Water |
| Jominy Test | – | 845 – 855 |
| Hot Forming | – | 850 – 1050 |
Applications
Automotive crankshafts and rear axle shafts, aircrafts crankshafts, Connecting Rods, Propeller Hubs, Gears, Drive shafts, Landing gear parts and heavy duty parts of rock drill
| Product Terkait: | |||||
 Baja Chromoly |
 Baja Stavax |
 Baja S45C |
|||