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Aircraft Steel 135 Mod / Nitriding (AMS 6470 / AMS 6472 / AMS 6471)

Technical Data Sheet

NITRALLOY 135™Modified VAC-ARC is a low alloy nitriding grade of steel with moderate hardenability. As will all nitriding steels NITRALLOY 135™Modified VAC-ARC provides a high case hardness without affecting the core properties of the metal. NITRALLOY 135™Modified VAC-ARC is generally used for aircraft gears, shafts, pinions, crankshafts, cams, camshafts and bolts.

Chemical Composition Limits
Weight%	C	Mn	Si	Cr	Mo	Al
NITRALLOY 135™Modified VAC-ARC	0.40	0.60	0.30	1.60	0.35	1.20

Availability
NITRALLOY 135™Modified VAC-ARC is available in bar (round bar). For all stock availability contact Sales.

Typical Mechanical Properties

Material	Size in Section cm	Ultimate Tensile Strength (Mpa)	Yield Strength (Mpa)	% Elongation	% Reduction of Area	Hardness HBW
NITRALLOY 135™Modified VAC-ARC	3.8	930	690	16	50	280-340
NITRALLOY 135™Modified VAC-ARC	3.8-7.6	860	620	15	40	280-340 on surface 269-321 on test specimen
NITRALLOY 135™Modified VAC-ARC	7.6-12.7	760	580	15	40	269-321 on surface 240-300 on test specimen

Specifications
AMS 6470
AMS 6471 (Vac Melt)
AMS 6472
AMS 2301
AMS 2304
AMS-S-6709
MIL-S-6709A
ASTM A322

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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.