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Titainium?

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PiErow

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How do you guys like running titainium on as savage?
As far as a-rms(upper and lower), and skids/bumper?
I want something that servs a purpose not something that looks flashy :idea: ...
 
Where can you get these titanium parts? I have only seen aluminum arms.
 
No titanium arms there. Looks like nice other stuff though.
 
Titanium (ALLOY)
I'm wondering what the % of titanium is and what the other alloys are.
Is it the same as saying it a diamond? Great but what grade?
Gold plated, great what K of gold and whats underneath it.

They aren't specific enough in their descriptions and info for me.
Sorry
 
That kind of struck me as odd also, but at those prices I wouldn't be getting any of those pieces anyway.

Their titanium alloy TVPs weigh more than stock pieces, and cost 6X more.
 
Ya i lookerd into it and its not worth it for what you pay. Plus it adds weight.
 
High strength alloys: Ti-6Al-4V Grade 5

This alpha-beta alloy is the workhorse alloy of the titanium industry. The alloy is fully heat-treatable in section sizes up to one inch and is used up to approximately 400°C (750°F). Since it is the most commonly used alloy - over 70% of all alloy grades melted are a sub-grade of Ti-6-4 - its uses span many aerospace engine and airframe components uses and also major non-aerospace applications in the marine, offshore and power generation industries in particular.

The addition of 0.05% palladium, (Grade 24), 0.1% ruthenium (Grade 29) and .05% palladium and 0.5% nickel (Grade 25) significantly increases corrosion resistance in reducing acid chloride and sour environments, raising the threshold temperature for attack to well over 200°C (392°F)


Ti-6Al-4V ELI (Grade 23)

The essential difference between Ti-6Al-4V ELI (Grade 23) and Ti-6Al-4V (Grade 5) is the reduction of oxygen content to 0.13% max in Grade 23. This confers improved ductility and fracture toughness, with some reduction in strength. Grade 23 has been widely used in fracture critical airframe structures and for offshore tubulars. Mechanical properties for fracture critical applications can be enhanced through processing and heat treatment. Grade 29 also having a lowered level of oxygen will deliver similar levels of mechanical properties to Grade 23 according to processing.


Composition

C <0.08%
Fe <0.25%
N2 <0.05%
O2 <0.2%
Al 5.5 - 6.76%
V 3.5 - 4.5%
H2(sheet) <0.015%
H2(bar) <0.0125%
H2(billet) <0.01%
Ti ~ Rem


Specifications/Designations

AMS 4911
AMS 4928
AMS 4930
AMS 4931
AMS 4935
AMS 4965
AMS 4967
AMS 4985
AMS 4991
ASTM Gr5, 23, 24, 25, 29
MIL -T-9046
MIL -T-9047
BSTA 10,11,12
BSTA 28,56,59
DIN 3.7165
AMS 4907 (ELI)
AMS 4930 (ELI)
AMS 4956 (ELI)
ASTM F136 (ELI)

UNS R56400 Grade 5
UNS R56403 Grade 25
UNS R56404 Grade 29
UNS R56405 Grade 24
UNS R56407 Grade 23


Physical Data


Typical
Density g/cm3(lb.cu.in) 4.42 (0.159)
Melting Range ºC±15 ºC(ºF) 1649 (3000)
Specific Heat J/Kg°C (BTU/lb/°F) 560 (.134)
Volume Electrical Resistivity mohm.cm(mohm.in) 170 (67)
Thermal Conductivity W/mk (BTU/ft h°F) 7.2 (67)
Mean Thermal Exp. Coeff. 0-100°C/°C (0 - 212oF/oF) 8.6x10-6 (4.8)
Mean Thermal Exp.Coeff.0-300°C/°C (0 - 572oF/oF) 9.2x10-6 (5.1)
Beta Transus °C±15°C (°F) 999 (1830)


Mechanical Data
Minimal Typical
Tensile Strength MPa ksi) 897 (130) 1000 (145)
0.2% ProºF StressMPa(ksi) 828 (120) 910 (132)
Elongation Over 2 Inches % 10 18
Reduction in Area % 20
Elastic Modulus GPa(Msi) 114 (17)
Hardness RºCkwell C 36
Specified Bend Radius<0.070in x Thickness 4.5
Specified Bend Radius >0.070in x Thickness 5.0
Welded Bend Radius x Thickness 6
Charpy, V-Notch Impact J(ft lbf) 24 (18)
 
So, in layman's terms what does all this "cool" data mean?

What does this mean to RC Cars and the choice and composition of RC Car/truck parts?

When I worked in the Aerospace Industry, I talked with many of the companies metalurgist thinking that Ti axles would be cool for my then AYK Radiant. But they set me straight, all "metals" have their benefits and pitfalls, thats why you don't see aircraft entirely made of Ti, Aluminum, or CF....


stallsmithb said:
High strength alloys: Ti-6Al-4V Grade 5

This alpha-beta alloy is the workhorse alloy of the titanium industry. The alloy is fully heat-treatable in section sizes up to one inch and is used up to approximately 400°C (750°F). Since it is the most commonly used alloy - over 70% of all alloy grades melted are a sub-grade of Ti-6-4 - its uses span many aerospace engine and airframe components uses and also major non-aerospace applications in the marine, offshore and power generation industries in particular.

The addition of 0.05% palladium, (Grade 24), 0.1% ruthenium (Grade 29) and .05% palladium and 0.5% nickel (Grade 25) significantly increases corrosion resistance in reducing acid chloride and sour environments, raising the threshold temperature for attack to well over 200°C (392°F)


Ti-6Al-4V ELI (Grade 23)

The essential difference between Ti-6Al-4V ELI (Grade 23) and Ti-6Al-4V (Grade 5) is the reduction of oxygen content to 0.13% max in Grade 23. This confers improved ductility and fracture toughness, with some reduction in strength. Grade 23 has been widely used in fracture critical airframe structures and for offshore tubulars. Mechanical properties for fracture critical applications can be enhanced through processing and heat treatment. Grade 29 also having a lowered level of oxygen will deliver similar levels of mechanical properties to Grade 23 according to processing.


Composition

C <0.08%
Fe <0.25%
N2 <0.05%
O2 <0.2%
Al 5.5 - 6.76%
V 3.5 - 4.5%
H2(sheet) <0.015%
H2(bar) <0.0125%
H2(billet) <0.01%
Ti ~ Rem


Specifications/Designations

AMS 4911
AMS 4928
AMS 4930
AMS 4931
AMS 4935
AMS 4965
AMS 4967
AMS 4985
AMS 4991
ASTM Gr5, 23, 24, 25, 29
MIL -T-9046
MIL -T-9047
BSTA 10,11,12
BSTA 28,56,59
DIN 3.7165
AMS 4907 (ELI)
AMS 4930 (ELI)
AMS 4956 (ELI)
ASTM F136 (ELI)

UNS R56400 Grade 5
UNS R56403 Grade 25
UNS R56404 Grade 29
UNS R56405 Grade 24
UNS R56407 Grade 23


Physical Data


Typical
Density g/cm3(lb.cu.in) 4.42 (0.159)
Melting Range ºC±15 ºC(ºF) 1649 (3000)
Specific Heat J/Kg°C (BTU/lb/°F) 560 (.134)
Volume Electrical Resistivity mohm.cm(mohm.in) 170 (67)
Thermal Conductivity W/mk (BTU/ft h°F) 7.2 (67)
Mean Thermal Exp. Coeff. 0-100°C/°C (0 - 212oF/oF) 8.6x10-6 (4.8)
Mean Thermal Exp.Coeff.0-300°C/°C (0 - 572oF/oF) 9.2x10-6 (5.1)
Beta Transus °C±15°C (°F) 999 (1830)


Mechanical Data
Minimal Typical
Tensile Strength MPa ksi) 897 (130) 1000 (145)
0.2% ProºF StressMPa(ksi) 828 (120) 910 (132)
Elongation Over 2 Inches % 10 18
Reduction in Area % 20
Elastic Modulus GPa(Msi) 114 (17)
Hardness RºCkwell C 36
Specified Bend Radius<0.070in x Thickness 4.5
Specified Bend Radius >0.070in x Thickness 5.0
Welded Bend Radius x Thickness 6
Charpy, V-Notch Impact J(ft lbf) 24 (18)
Click to expand...
 
ApriliaRacer said:
What does this mean to RC Cars and the choice and composition of RC Car/truck parts?

all "metals" have their benefits and pitfalls.
Click to expand...
Excellent questions, I would love to be edgeamucated.


I hope no one thought I was bashing the company or their parts, I'm just skeptical when I see a lack of info.

I'm going to Ass-U-Me that stallsmithb has ties to the above mentioned company. What a great opportunity to come and share his knowledge and educate us on Ti.
 
For the Savage, stick to the stock upper and lower arms. They are super strong and will flex in a crash. Alloy center skid plates are OK, but the front and rear alloy skid plates could be bent in a crash. The only places I'd put alloy on is the towers (although not necessary), diff cups, and diff cases.
 
In layman terms, the above mentioned titanium should be twice as strong as 7075 T6 aluminum, and 4 times as strong as 6061 aluminum which the stock TVPs are made of. In a crash that would actually bend your TVPs or skidplates all of them would bend. The titanium would just be harder to bend back into shape. My brother who is a machinist and works with all three says to stick with the 6061 for it's cost effectiveness and weight.

I do agree with Darthracer that certain plastic parts were designed to be plastic for a reason. They are cheap to replace and I'd rather have a $3 arm to replace than an entire bulkhead assembly because that arm didn't flex/break when it was supposed to.
 
No ties with any Savage parts company. Just wanted to show you the Technical end of the metal used in the parts. I would say if you wanted to add the titanium, I would make sure you main parts were replaced first and work back. I can't justify the cost for the tianium. I just bought my Savage and have aluminum replacement parts for 95% of the truck, but it is still in the box. Hopefully I will get to build it this week.
 

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