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Aircraft Steel 9-4-30 Vac Melt (AMS 6526)

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

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.