antimony hardness

  • Tacticool Products - Bullet Hardness

    The bullets become too expensive and too light. Antimony and arsenic are more common and more effective alloying agents to increase lead hardness. A much smaller amount of these alloying agents is needed to harden lead, and the density is not lowered much by these small amounts. When antimony is added to lead, the alloy can be hardened.

  • Shot Hardness | Shotgun Report®

    Dec 26, 2013· Dear Technoid, As I understand it, it is important to shoot lead shot that has, perhaps, as much as 6% antimony in its make up to deal with the need for hardness and reduce fliers. Colleagues state that Remington STS and Winchester AA have this level of antimony. I frequently shoot the following shot: ·

  • Antimony (Sb) Properties, Applications

    Jul 12, 2013· Antimony is a chemical element with Sb as its symbol. It belongs to group 15, periodic number 5 of the periodic table. The metallic form of this element is bright, silvery, and brittle. The Mohs scale for hardness is 3 for this metal. It is a poor conductor of heat and electricity.

  • effect on hardness of lead with antimony and tin

    Dec 10, 2018· In other words, a graph of percent antimony vs hardness went up very quickly at the start, but the line bent downward and plateaued fairly quickly. At small percentages (like 1%-2% or so), it added a lot of hardness, more than one Bhn for each percent. Anything over about 15% to 18% did not add any measurable hardness.

  • Who Puts the Hardest Shot in Lead Target Shotshells?

    The antimony content is an estimated antimony equivalent based on the hardness of the shot. Federal is using similar language in their new reloadable Gold Medal Grand shells saying, We use a special lead alloy that provides the hardness of 5 percent antimony lead. The nominal shot diameter for #7-1/2 shot is.0950 inches.

  • Hardest shot with most antimony? | Americantrapshooter ...

    Jan 23, 2021· Antimony is used as the primary hardening element. Pure lead is the cheap part; it has a Brinell hardness if 8.6. To illustrate the formula: Lets say we alloy pure lead to arrive at a composition with 4% tin and 4% antimony. So, Bhn = 8.6 + 4 (0.3) + 4 (0.9).

  • Arsenic vs Antimony For Hardness? - Gunloads

    Feb 15, 2008· A lead/antimony alloy with 4% antimony will be 8.1 BHN for cold rolled and 24 BHN if heat treated at 450 degrees F then water quenched. The highest hardness listed is 26.3 BHN for 8% antimony heat treated at 450 degrees F, water quenched and aged 1 day.

  • Lead Bullet Hardness | The Firearms Forum

    Jan 25, 2010· 6% Antimony 2% Tin Saeco Hardness 8.5 to 9 Brinell Hardness 16 He calls these hard cast bullets, I've read the article from Shakey Pete's Shootin Shack concerning cast bullets. His article say's that most commercial suppliers use a 85% lead, 5% tin & 10% antimony and that they're to hard to slug up properly in anything other than maginum loads.

  • Cast bullet reference on lead alloy's, min / max pressure ...

    Adding a trace (1 /4 of 1% to 1 /2%) of arsenic in the alloy dramatically increases the hardness that can be achieved by heat treating. The percentage of antimony effects the hardening/time curve. 2% antimony will take longer to achieve final hardness than 4% or 6% antimony alloy.

  • Cast bullet reference on lead alloy's, min / max pressure ...

    The essential metals for heat treating are lead, antimony and arsenic. Tin is optional; although it may aid in an effort to cast more perfect bullets and contribute to ductility. To obtain maximum hardness, a minimum of one to two percent antimony is required in addition to a

  • Antimony Mineral Data

    PE Antimony = 350.91 barns/electron U=PE Antimony x rElectron Density=1,981.45 barns/cc. Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units) Antimony is Not Radioactive : Antimony Classification: Dana Class: 01.03.01.02 Native Elements

  • Antimony Content Of Shot | Shotgun Report®

    Nov 01, 2013· Antimony is the metal element used to increase the hardness of lead shot. All lead shot that I am familiar with (a CYA comment if ever there was one), has some antimony in the mix. The most common pellet formation processes require some antimony.

  • Hardness Testing Lead A series of TIPS from my recent ...

    May 22, 2020· Clip on wheel weights contain about 3-4% antimony, and are (as air cooled) about 10-11 BHN. Linotype is about 12% antimony, and in the range of 22 on the BHN scale. Monotype is a little higher, with the antimony being about 19% and hardness in the range of 28 BHN.

  • Antimony Content Of Shot | Shotgun Report®

    Nov 01, 2013· Antimony is the metal element used to increase the hardness of lead shot. All lead shot that I am familiar with (a CYA comment if ever there was one), has some antimony in the mix. The most common pellet formation processes require some antimony.

  • Chapter 3 - Alloy Selection and Metallurgy, Cast Bullet ...

    While antimony increases the hardness of lead, it does so by impairing its malleability. At typical lead-pot temperatures (ca. 700 F), antimony is only moderately soluble in lead alloys, and as the temperature drops, the solubility of antimony is markedly lower than that of tin. At the eutectic temperature for a binary lead-antimony alloy (484 ...

  • Hardest shot with most antimony? | Americantrapshooter ...

    Jan 23, 2021· Antimony is used as the primary hardening element. Pure lead is the cheap part; it has a Brinell hardness if 8.6. To illustrate the formula: Lets say we alloy pure lead to arrive at a composition with 4% tin and 4% antimony. So, Bhn = 8.6 + 4 (0.3) + 4 (0.9). So this alloy would have a Brinell hardness of 13.4.

  • Who Puts the Hardest Shot in Lead Target Shotshells?

    The antimony content is an estimated antimony equivalent based on the hardness of the shot. Federal is using similar language in their new reloadable Gold Medal Grand shells saying, We use a special lead alloy that provides the hardness of 5 percent antimony lead.

  • Antimony - Properties - Price - Applications - Production

    Brinell hardness of Antimony is approximately 300 MPa. The Vickers hardness test method was developed by Robert L. Smith and George E. Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials.

  • Antimony - Element information, properties and uses ...

    Antimony and its compounds were known to the ancients and there is a 5,000-year old antimony vase in the Louvre in Paris. Antimony sulfide (Sb 2 S 3) is mentioned in an Egyptian papyrus of the 16 th century BC. The black form of this pigment, which occurs naturally as the mineral stibnite, was used as mascara and known as khol.The most famous user was the temptress Jezebel whose exploits are ...