Brass Stacker Tungsten Carbide Guide Rod with Polished Finish for Springfield Armory XDm 4.5/5.25
The complete Brass Stacker unit weighs 3.0 oz, a 400% increase from OEM Guide Rod weight of approximately .74 oz. The Casing and Core have an Interference Fit and are permanently bonded together. The Core is made from Ultra Micro Grain TUNGSTEN CARBIDE (WC) with 10% COBALT (Co) and has the following properties: Density: 14.45 g/cm, Ultimate Tensile Strength: 450,000 psi, Transverse Rupture Strength: 4.0 Gpa, Fracture Toughness: 8.7 MPam, Young's Modulus: 580 GPa, Hardness: 91.8 Ra, Grain Size: .6 micron. Although the Casing is dimensionally identical to the OEM Guide Rod, it is in fact quite different. The Casing is made from E.T.D. 150, a High Strength Alloy Steel Modified from Medium Carbon AISI 4100 Series Alloy Steel. The High Strength is developed by Elevated Temperature Drawing below the critical temperature range and has the following properties: Carbon: .40 min, Manganese: .70-1.10, Silicon: .15-.35, Chromium: .80-.12, Molybdenum: .15-.25, Ultimate Tensile Strength: 150,000 psi, Yield Strength: 130,000 psi, Hardness: 32 Rc Min. The Casing surface is hardened to resist spring wear and corrosion using NITRO-WEAR, a Patented, Proprietary process for Ferritic Nitro-Carburizing in a fluid bed furnace. This produces a tough, file-hard (55-60 Rc), wear and corrosion resistant surface .003-.005" thick. A 24 hour, 15% salt bath test yields no corrosion. The Casings are Garnet tumbled and Polished to achieve a superior finish. CAUTION! Improper installation or use may result in damage property, severe injury, or loss of life. If for any reason this product does not function properly, discontinue use immediately. Always practice proper handling techniques, safety precautions, and ensure an UNLOADED condition. Disassemble per manufacturer's instructions to access, remove and replace OEM guide rod assembly with Performance Recoil Guide Rod and OEM Spring. Reassemble per manufacturer's instructions and check for proper fit and function before use.