What is the hardness of lead bullets?
| Type Metal | Tin | Hardness |
|---|---|---|
| Lead | — | 5 |
| Tin | 100 | 7 |
| Antimony | — | 50 |
| As an example: the solidification of a nominally .357″ diameter bullet cast of Linotype could be expected from the above table to be .0065 X .357″ = .0025″. In a soft alloy of lead and tin, .01 X .357″ = .0035″. |
What is Brinell Hardness for bullets?
The reason is basically that the large manufacturers, for ease of production, use a standard alloy for all of their cast bullet construction, an alloy which has a Brinell Hardness Number of approximately 24.
What is the Brinell Hardness of lead?
5.0 HB
The “10” is the ball diameter in millimeters. The “3000” is the force in kilograms force. The hardness may also be shown as XXX HB YYD2….Common values.
| Material | Hardness |
|---|---|
| Lead | 5.0 HB (pure lead; alloyed lead typically can range from 5.0 HB to values in excess of 22.0 HB) |
| Pure Aluminium | 15 HB |
| Copper | 35 HB |
What is the Brinell Hardness of Linotype lead?
about 22
The Brinell Hardness of this Linotype alloy is about 22.
What is the Brinell hardness of copper?
| Physical Properties | Metric | Comments |
|---|---|---|
| Hardness, Brinell | 89 | Converted from Vickers for 500 kg load/10 mm ball Brinell test. |
| Hardness, Rockwell A | 35 | Converted from Vickers. |
| Hardness, Rockwell B | 51 | Converted from Vickers. |
| Hardness, Vickers | 100 |
What cast lead bullets?
A cast bullet is made by allowing molten metal to solidify in a mold. Most cast bullets are made of lead alloyed with tin and antimony; but zinc alloys have been used when lead is scarce, and may be used again in response to concerns about lead toxicity.
What is bullet obturation?
Obturation in firearms ammunition With reference to firearms and air guns, obturation is the result of a bullet or pellet expanding or upsetting to fit the bore, or, in the case of a firearm, of a brass case expanding to seal against the chamber at the moment of firing.
What is the Brinell Hardness of copper?
What is the Brinell Hardness of antimony?
| Antimony | |
|---|---|
| Bulk modulus | 42 GPa |
| Mohs hardness | 3.0 |
| Brinell hardness | 294–384 MPa |
| CAS Number | 7440-36-0 |
Are wheel weights good for making bullets?
Yes, much good shooting can be had from salvage wheel weight and very respectable bullets may be cast from this resource.
What is Brinell hardness number of brass?
60
Typical Brinell Hardness Numbers for Metals
| Material | Brinell Hardness Number |
|---|---|
| Soft brass | 60 |
| Mild steel | 130 |
| Annealed chissel steel | 235 |
| White cast iron | 415 |
What is Brinell hardness number?
You may be asking why shooters don’t know much about this whole bullet hardness optimization business. The reason is basically that the large manufacturers, for ease of production, use a standard alloy for all of their cast bullet construction, an alloy which has a Brinell Hardness Number of approximately 24.
What is the Brinell hardness of a cast bullet?
The reason is basically that the large manufacturers, for ease of production, use a standard alloy for all of their cast bullet construction, an alloy which has a Brinell Hardness Number of approximately 24. Why do they do this?
What is the hardness of lead in bullet?
Lead Bullet Hardness. A common source of casting lead alloy is scrap wheel weight lead recovered from tire shops. The composition of wheel weight lead alloy varies, but is typically about 95% lead, 4.5% antimony, .4% tin and .1% arsenic and other trace elements. One simple hardening method is quench cooling.
What is the best formula for bullet hardness?
There is a formula for optimal bullet hardness which is simple and it is worth knowing: Optimum BHN = PSI / (1422 x .90) The PSI of your reloads is published in the reloading manuals. Take a typical .45 ACP load, using a 200-grain LSWC bullet – 5.0 grains of Bullseye.