AdministratorWhich is better 9310 steel or Carpenter 158?
What is the difference between a 158 carpenter bolt and one made from 9310 steel? The difference is in the steel. Many manufacturers will state that properly heat treated 9310 is approximately 7-8% “stronger” than 158, but 9310 requires that it be heat treated properly to achieve that increase in strength.
What is the AR 15 bolt made of?
Carpenter No. 158 steel is the mil-spec steel used for fabricating the bolt itself. This type of steel is more expensive than 9310 (another popular steel used for the bolt and carrier), but it provides the best performance and lifespan for the BCG.
What is 158 Carpenter steel?
Carpenter 158 is a case(surface) hardened steel where 8620/9310 is through hardened. Case hardening allows C-158 to be very hard on the outside to prevent wear and crack formation while the inside is softer and more flexible to prevent crack propagation and absorb shock loads.
Is a 9310 bolt good?
9310 is a AISI standard grade of tool steel that makes it about ~7% stronger than “mil-spec” Carpenter 158 steels, when appropriately treated. Its commonly used in the aerospace industry where toughness, impact strength, and solid wear characteristics are required.
What is a bolt carrier made of?
Mil-Spec Bolt Carriers This is an extremely high-strength alloy mold steel consisting of iron, manganese, nickel, chromium, carbon, silicon, molybdenum, sulfur, and phosphorous. 8620 steel offers high external strength and good internal strength, making it highly wear resistant.
Is 9310 a mil spec?
What makes a quality bolt carrier group?
A full-auto bolt carrier group simply means that the group is durable enough to handle fully automatic fire. Sometimes, you will find these called M16 BCGs, because they’re designed for a full-auto M16, not a semi-auto AR-15. Meanwhile, a semi-auto BCG is only capable of handling semi-automatic fire.
What is a mil-spec BCG made of?
Mil-Spec Bolt Carriers This is an extremely high-strength alloy mold steel consisting of iron, manganese, nickel, chromium, carbon, silicon, molybdenum, sulfur, and phosphorous.
What is 9310 alloy steel?
9310 alloy steel (also known as AISI 9310 steel) is a low alloy carburizing steel based primarily in nickel and chromium and known for its hardenability and strength. 9310 also possesses solid ductility, weldability, and machinability properties, and is an excellent metal for use in heavy-duty machinery, case hardened components, and gears.
What is the difference between 9310 and Mil Spec bolts?
Our 9310 bolts are still magnetic particle inspected (ensures consistent material), shot-peened (surface strength), and heat-treated (for shock, abrasion, and wear) like the Mil-Spec. With 9310, the heat-treat is critical and all steps are completed with full certifications.
Is 9310 steel the same as Carpenter 158?
It has been the “Mil-Spec” since. Since the creation of Carpenter 158, the metals industry has continued to innovate, creating new blends of steels. 9310 is a AISI standard grade of tool steel that makes it about ~7% stronger than “mil-spec” Carpenter 158 steels, when appropriately treated.
What is 9310 VAC melt steel?
9310 Vac Melt is a high quality carburizing steel produced by a vacuum consumable electrode process. 9310 has a high hardenability, high core hardness and high fatigue strength. All of those aspects considered, 9310 steel is ideally suited for aircraft engine gear and pinon applications.