About 4150 HR Quenched and Tempered (Q&T)
This is a resulphurized, hot-rolled, quenched, tempered, stress-relieved steel. 4150R HR Q&T SR is a free-machining alloy steel that provides an outstanding combination of heat-treated properties and superior machinability. This alloy steel is manufactured under close quality control for uniformity to an ASTM grain size of 5 to 8. It is especially suitable for service applications where substantial strength, toughness, and hardness are required.
Alro stocks 4150 steel - a part of the SAE (Society of Automotive Engineers) family of steel grades. 4150 round bar is a higher carbon variation of the chromium, manganese, molybdenum 4100 series of low alloy steels. It is considered a low alloy steel because its percentage of metals is low in proportion to its main component, iron. 4150 is noted for increased hardenability. It may be selected when slightly higher mechanical properties are required. Machinabilty of 4150 round bar is better in the annealed or normalized condition. It is ideal to machine in the annealed form and then heat treat it to harden the steel; as heat treatment can make it very hard and difficult to work. On this 4150 Q&T product, tempering has been done to restore some of the ductility after heat treatment and quenching.
4150R Gun Barrel Quality
This 4150 HR GBQ is a unique grade stocked at Alro Steel. It has been designed to provide superior performance for use in the firearms manufacturing industry. Features of 4150R GBQ include superior performance for gun barrel drilling, reaming, and machining. In addition, this material has less distortion to the gun-drilled surface.
Typical Applications
Production of handgun, rifle, and shotgun barrels, as well as other firearm components
Specifications
- Meets MIL-B-11595E.
- Grade: 4150R.
- Condition: Quench & Tempered.
- Finishes: Hot Rolled as Rolled or Turned and Polished
Stock Sizes
1.000”, 1.032”, 1.063”, 1.125” and 1.250”