Maraging Steels
VART100QA (AMS 6532)
Steel with good toughness in high levels of mechanical resistance after aging. Components subject to elevated stress and toughness in aircrafts and rockets.
- ABTN | ASTM | SAE | AISI: –
- DIN | WNr: –
- Chemical Composition:
| C % | Si % | Mn % | Cr % | Ni % | Fe % | OTHERS & |
| max. 0,20 | max. 0,05 | max. 0,05 | 3,00 | 11,20 | Rem. | Co=13,4 Mo=1,20 |
VART250
The main feature of 18%Ni maraging steels is good tensile and toughness properties for various levels of resistance. The number accompanying the steel name matches its Theoretical Yield Strength at 0.2% strain in ksi. This unique characteristic is achieved by precipitation hardening, in a tough martensitic die, after a simple aging heat treatment. Used in a wide range of applications, such as racing cars, aerospace and military sectors, as well as in springs and tools.
- ABTN | ASTM | SAE | AISI: Maraging 250 | ASTM A579 | GR. 72 | MAS 6512 | MIL-S-46850D | UNS K92890
- DIN | WNr: –
- Chemical Composition:
| C % | Si % | Mn % | Ni % | Fe % | Ti % | Al % | OTHERS & |
| max. 0,01 | max. 0,10 | max. 0,10 | 18,0 | Rest. | 0,45 | 0,10 | Co=8,00 Mo=5,00 |
VART250QA (MIL-S-46850)
Steel with good toughness in high levels of mechanical resistance after aging. Components subject to elevated stress and toughness in aircrafts and rockets.
- ABTN | ASTM | SAE | AISI: MIL-S-46850
- DIN | WNr: WNr 1.6359
- Chemical Composition:
| C % | Si % | Mn % | Cr % | Ni % | Fe % | Ti % | Al % | OTHERS & |
| max. 0,005 | max. 0,05 | max. 0,05 | max. 0,05 | 18,0 | Rem. | 0,40 | 0,10 | Co=8,50 Mo=5,00 |
VART300
Basically, VART300 is similar to VART250. However, as it is higher in Ti and Co, VART300 has increased mechanical strength.
- ABTN | ASTM | SAE | AISI: Maraging 300 | ASTM A579 | GR. 73 | MAS 6514 | MIL-S-46850D | UNS K93120
- DIN | WNr: –
- Chemical Composition:
| C % | Si % | Mn % | Ni % | Fe % | Ti % | Al % | OTHERS & |
| max. 0,01 | max. 0,10 | max. 0,10 | 18,5 | Rest. | 0,75 | 0,10 | Co=9,40 Mo=5,00 |
VART300QA (MIL-S-46850 / AMS 6514)
Steel with good ductility at elevated levels of mechanical resistance after aging. Components subject to very high stress in aircrafts and engine jackets for satellite launch vehicles (SLV).
- ABTN | ASTM | SAE | AISI: MIL-S-46850
- DIN | WNr: WNr 1.6358 / 1.6354
- Chemical Composition:
| C % | Si % | Mn % | Ni % | Fe % | Ti % | Al % | OTHERS & |
| max. 0,005 | max. 0,05 | max. 0,05 | 18,5 | Rem. | 0,75 | 0,10 | Co=9,30 Mo=5,00 |
VART350
Similar to VART300, but higher in Ti and Co, further increasing its mechanical strength.
- ABTN | ASTM | SAE | AISI: Maraging 350
- DIN | WNr: –
- Chemical Composition:
| C % | Si % | Mn % | Cr % | Ni % | Fe % | Ti % | Al % | OTHERS & |
| max. 0,01 | max. 0,10 | max. 0,10 | max. 0,5 | 18,0 | Rest. | 1,3 | 0,10 | Co=12,00 Mo=4,90 |