6Al-6V-2Sn, R56620, Ti-6-6-2, Titanium Alloy

6Al-6V-2Sn, R56620, Ti-6-6-2, Titanium Alloy
STEELMAX Metal Story

6Al-6V-2Sn, R56620, Ti-6-6-2, Ti-Alloy 는
6Al-4V 보다 높은 강도가 필요할 때 사용하지만

315℃ 이상에서 취성 (brittleness)이 발생 할 수 있습니다.
1000MPa 수준의 높은 강도 — High strength 재료이지만

6Al-6V-2Sn 는, 낮은 피로 인성(fatigue toughness)과
피로 성질 (fatigue properties),

낮은 용접성 (limited weldability)으로, 강도는 높게 필요한
부차적인 구조체 (Secondary structures)로 사용됩니다.

항공기 구조체 — Air-frame applications
단조품과 파스너 — Forging and fasteners로 사용합니다.

UNS Number R56620 (α+β alloy)			AMS4918, AMS 4936, AMS 4971, AMS 4978, AMS 4979
Chemical composition (%)	Alloying element (wt%)	Aluminum (Al)	5.0~6.0
		Vanadium (V)	5.0~6.0
		Yin (Sn)	1.5~2.5
		Copper (Cu)	0.35~1.00
	Impurity limits (wt% max)	Nitrogen (N)	0.04
		Carbon (C)	0.05
		Hydrogen (N)	0.015
		Iron (Fe)	0.35~1.0
		Oxygen (O)	0.2
		Other each	0.1
		Other total	0.4
Typical room-temperature Tensile properties	Tensile strength (MPa)	25~50mm	985
		102mm	910
		205mm	1000
	Yield strength (MPa)	25~50mm	905
		102mm	840
		205mm	895
	Elongation (%)	25~50mm	15
		102mm	17
		205mm	12
	Reduction area (%)	25~50mm	36
		102mm	35
		205mm	23
Annealed 2h at 700℃, air cooled

※ 관련 Specifications

AMS 4948 : 6-6-2 Titanium Alloy Sheet, Plate, Annealed
AMS 4971 : 6-6-2 Titanium Alloy Bars, Wire, Forgings & Rings Annealed & Rings Annealed Heat Treatable.
AMS 4978 : 6-6-2 Titanium Alloy Bars, Wire, Forgings & Rings Annealed
AMS 4979 : 6-6-2 Titanium Alloy Bars, Wire, Forgings & Rings Solution & Precipitation Heat treated.
AMS 6935 : 6-6-2 Titanium Alloy Bars, Forgings & Forging Stock, Solution Heat Treated & Aged
AMS 6936 : 6-6-2 Titanium Alloy Bars, Forgings & Forging Stock, Annealed