Difference between revisions of "Materials Database"
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| Line 144: | Line 144: | ||
| Familiar Sellers | | Familiar Sellers | ||
| McMaster Carr, Midwest Steel Supply, SendCutSend | | McMaster Carr, Midwest Steel Supply, SendCutSend | ||
| + | |- | ||
| + | |} | ||
| + | Material Description: | ||
| + | *Aerospace grade aluminum alloy which is much stronger and harder than 6061-T6 | ||
| + | *Pre-heat-treated to T6 temper | ||
| + | *Past and anecdotal experience notes that it tends to fracture before it bends | ||
| + | *Some builders recommend avoiding using it as armor or for parts that take direct hits due to fracture risk | ||
| + | *Relatively easy to machine and is more expensive than 6061-T6 | ||
| + | |||
| + | == Grade 5 Titanium (Ti-6Al-4V) == | ||
| + | {| border="1" cellspacing="1" cellpadding="1" style="width: 500px;" | ||
| + | |- | ||
| + | | Type | ||
| + | | Titanium Alloy | ||
| + | |- | ||
| + | | Modulus of Elasticity | ||
| + | | 10^7 psi | ||
| + | |- | ||
| + | |- | ||
| + | | Shear Modulus | ||
| + | | 3800 ksi | ||
| + | |- | ||
| + | |- | ||
| + | | Poisson's Ratio | ||
| + | | 0.32 | ||
| + | |- | ||
| + | |- | ||
| + | | Density | ||
| + | | 0.102 lb/in^3 | ||
| + | |- | ||
| + | | Ultimate Tensile Strength | ||
| + | | 81 ksi | ||
| + | |- | ||
| + | | Tensile Yield Strength | ||
| + | | 69 ksi | ||
| + | |- | ||
| + | |- | ||
| + | | Fracture Toughness (T-L dir) | ||
| + | | 22.8 ksi-in½ | ||
| + | |- | ||
| + | | Brinell Hardness | ||
| + | | 150 HB | ||
| + | |- | ||
| + | | Rockwell Hardness | ||
| + | | B87 | ||
| + | |- | ||
| + | | Elongation at Break | ||
| + | | 7.9% | ||
| + | |- | ||
| + | |- | ||
| + | | Machinability (Vs. 1112 Steel) | ||
| + | | 170% | ||
| + | |- | ||
| + | | Familiar Sellers | ||
| + | | McMaster Carr, SendCutSend, TMS Titanium | ||
|- | |- | ||
|} | |} | ||
Revision as of 08:26, 14 December 2022
Contents
AR500 Steel
| Type | Carbon Steel |
| Modulus of Elasticity | 30 x 10^6 psi |
| Poisson's Ratio | 0.29 |
| Density | 0.29 lb/in^3 |
| Ultimate Tensile Strength | 225 ksi |
| Tensile Yield Strength | 200 ksi |
| Brinell Hardness | 450 HB |
| Rockwell Hardness | C48 |
| Elongation at Break | 12% |
| Familiar Sellers | McMaster Carr, MakeItRingTargets, Alro Steel, SendCutSend |
Material Description:
- High strength, ultra wear resistant steel used in body armor and shooting targets
- Hardened steel is difficult to machine, is typically only used for Waterjet parts
- Typically used for weapons due to it's high strength, toughness, and relatively high hardness
- Anecdotal experience from builders says that AR500 typically bends before it fractures
- Will rust over time when wet or exposed to moist air
Aluminum 6061-T6
| Type | Aluminum Alloy |
| Modulus of Elasticity | 10^7 psi |
| Shear Modulus | 3800 ksi |
| Poisson's Ratio | 0.33 |
| Density | 0.0984 lb/in^3 |
| Ultimate Tensile Strength | 45 ksi |
| Tensile Yield Strength | 39 ksi |
| Fracture Toughness (T-L dir) | 26.4 ksi-in½ |
| Brinell Hardness | 93 HB |
| Rockwell Hardness | B52 |
| Elongation at Break | 10% |
| Machinability (Vs. 1112 Steel) | 270% |
| Familiar Sellers | McMaster Carr, Midwest Steel Supply, SendCutSend |
Material Description:
- Lightweight aluminum alloy that comes already pre-heat-treated T6 temper which gives it its strength
- Beware of tempers T4 and O which are weaker than 6061-T6
- Typically used for frame rails, plates, pulleys, and armor for some bots
- Tends to fail in bending before fracturing
- Tends to "ablate" and may take gashes when hit directly by weapons
- Easy to machine and relatively cheap
Aluminum 7075-T6
| Type | Aluminum Alloy |
| Modulus of Elasticity | 10^7 psi |
| Shear Modulus | 3800 ksi |
| Poisson's Ratio | 0.32 |
| Density | 0.102 lb/in^3 |
| Ultimate Tensile Strength | 81 ksi |
| Tensile Yield Strength | 69 ksi |
| Fracture Toughness (T-L dir) | 22.8 ksi-in½ |
| Brinell Hardness | 150 HB |
| Rockwell Hardness | B87 |
| Elongation at Break | 7.9% |
| Machinability (Vs. 1112 Steel) | 170% |
| Familiar Sellers | McMaster Carr, Midwest Steel Supply, SendCutSend |
Material Description:
- Aerospace grade aluminum alloy which is much stronger and harder than 6061-T6
- Pre-heat-treated to T6 temper
- Past and anecdotal experience notes that it tends to fracture before it bends
- Some builders recommend avoiding using it as armor or for parts that take direct hits due to fracture risk
- Relatively easy to machine and is more expensive than 6061-T6
Grade 5 Titanium (Ti-6Al-4V)
| Type | Titanium Alloy |
| Modulus of Elasticity | 10^7 psi |
| Shear Modulus | 3800 ksi |
| Poisson's Ratio | 0.32 |
| Density | 0.102 lb/in^3 |
| Ultimate Tensile Strength | 81 ksi |
| Tensile Yield Strength | 69 ksi |
| Fracture Toughness (T-L dir) | 22.8 ksi-in½ |
| Brinell Hardness | 150 HB |
| Rockwell Hardness | B87 |
| Elongation at Break | 7.9% |
| Machinability (Vs. 1112 Steel) | 170% |
| Familiar Sellers | McMaster Carr, SendCutSend, TMS Titanium |
Material Description:
- Aerospace grade aluminum alloy which is much stronger and harder than 6061-T6
- Pre-heat-treated to T6 temper
- Past and anecdotal experience notes that it tends to fracture before it bends
- Some builders recommend avoiding using it as armor or for parts that take direct hits due to fracture risk
- Relatively easy to machine and is more expensive than 6061-T6
Data Sources
- AR500 Steel: SendCutSend, McMaster Carr, Steel Warehouse
- Al 6061-T6: SendCutSend, Matweb, Machining Doctor
- Al 7075-T6: SendCutSend, Matweb, Machining Doctor
