Technical Data Sheet
Alloy 9-4-30 Vac Melt N&T (LESCALLOY HP 9-4-30 VAC ARC ®) is a low alloy, high strength steel with a high nickel and cobalt content to promote toughness. Alloy 9-4-30 Vac Melt N&T was designed to have high hardenability together with good weldability and excellent fracture toughness. Alloy 9-4-30 Vac Melt N&T is used in aircraft structural components, rocket motor cases, armor plate, pressure vessels and gears.
| Chemical Composition Limits | ||||||||
| Weight% | C | Mn | Si | Cr | V | Mo | Ni | Co |
| 9-4-30 Vac Melt N&T | 0.30 | 0.30 | 0.10 | 1.00 | 0.10 | 1.00 | 7.50 | 4.50 |
Availability
Alloy 9-4-30 Vac Melt N&T (LESCALLOY HP 9-4-30 VAC ARC ®) is available in bar (round bar). For all stock availability contact Sales.
Typical Mechanical Properties
| Material | RCS Billet Size mm |
0.2 % Yield Strength (Mpa) | Ultimate Tensile Strength (Mpa) | % Elongation | % Reduction of Area |
| LESCALLOY HP 9-4-30 VAC ARC ® | 343 | 1300 | 1580 | 14.7 | 50.3 |
| LESCALLOY HP 9-4-30 VAC ARC ® | 343 | 1260 | 1590 | 14.0 | 45.9 |
| LESCALLOY HP 9-4-30 VAC ARC ® | 146 | 1340 | 1600 | 15.0 | 52.5 |
| LESCALLOY HP 9-4-30 VAC ARC ® | 146 | 1310 | 1590 | 15.0 | 51.7 |
| Actual center transverse mechanical properties |
Specifications
AMS 6526
MIL-STD-2154 Cl A
UNS K91283
BMS-7-182 Type 2
MM-S-2102
STO-160-LBO-012