DIN 17851 TiAl6Sn2Zr4Mo2Si: High-Strength, Artificially Aged Titanium Alloy

Titanium DIN TiAl6Sn2Zr4Mo2Si is a two-phase, Alpha Beta Alloy. It is usually used in the annealed or solution treated and aged conditions. It’s a heat treatable, high strength alloy with lower toughness and ductility than Titanium Grade 5 (6Al-4V) and it’s difficult to weld. Cold forming of DIN TiAl6Sn2Zr4Mo2Si is difficult because of its high strength. This grade can be welded by the inert gas shielded, fusion welding process but the heat effected area will have less ductility and toughness than the parent material. This grade is primarily used for airframe and jet engine parts, rocket engine cases and ordinance components.

Properties

General

Property	Temperature	Value	Condition	Related Standards	Shape
Density	20.0 °C	4.55 g/cm³	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging

Mechanical

Property	Temperature	Value	Condition	Related Standards	Shape
Elastic modulus	20.0 °C	114.0 GPa	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging
	200.0 °C	104.0 GPa	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging
	400.0 °C	93.0 GPa	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging
Elongation	20.0 °C	8.0 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Reduction of area	20.0 °C	20.0 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Shear modulus	20.0 °C	43.0 GPa	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging
Tensile strength	20.0 °C	890.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging
	20.0 °C	920.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Rod
	20.0 °C	1030.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862
	100.0 °C	945.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862
	200.0 °C	885.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862
	300.0 °C	845.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862
	400.0 °C	785.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862
	500.0 °C	735.0 MPa	Artificially Aged	DIN 17851, DIN 17864, DIN 17862

Thermal

Property	Temperature	Value	Condition	Related Standards	Shape	Comment
Coefficient of thermal expansion		7.699999999999999e-06 - 1e-05 1/K				Typical for Titanium Alpha Beta Alloy
Melting point		1500.0 - 1750.0 °C				Typical for Titanium Alpha Beta Alloy
Specific heat capacity		370.0 - 674.0 J/(kg·K)				Typical for Titanium Alpha Beta Alloy
Thermal conductivity	20.0 °C	5.86 W/(m·K)	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging

Electrical

Property	Temperature	Value	Condition	Related Standards	Shape
Electrical resistivity	20.0 °C	1.91e-06 Ω·m	Artificially Aged	DIN 17851, DIN 17862, DIN 17864	Forging

Chemical properties

Property	Value	Condition	Related Standards	Shape
Aluminium	5.5 - 6.5 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Carbon	0.05	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Hydrogen	0.015	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Iron	0.25	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Molybdenum	1.8 - 2.2 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Nitrogen	0.05	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Oxygen	0.15	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Silicon	0.06 - 0.12 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Tin	1.8 - 2.2 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Titanium	83.7 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod
Zirconium	3.6 - 4.4 %	Artificially Aged	DIN 17851, DIN 17864, DIN 17862	Forging, Rod

SAE J2329 Grade 5 Cold-Rolled Steel – Premium Properties & Applications DIN 17851 TiAl6V6Sn2 – Premium High-Strength, Corrosion-Resistant Titanium Alloy

Metal