Reciprocating Saw Blades – Metal Cutting – Bi-Metal – S1122EF

The S1122EF bi-metal reciprocating saw blade is built specifically for cutting sheet metals, and it does the job without fuss. At 225mm long, the blade uses a high carbon steel body bonded with a high speed steel cutting edge — two materials chosen for a reason. The HCS body flexes rather than snaps, which matters when you’re cutting at awkward angles or working fast. The HSS teeth hold their edge at both low and high temperatures, so you’re not burning through blades every hour.

Bi-metal construction is the standard choice for metal cutting on site because it genuinely outlasts single-material blades. The teeth resist the heat generated during cutting, and the body absorbs the vibration and lateral stress that would shatter a more rigid blade. Extended service life translates directly into fewer blade changes and a lower cost per cut, which adds up on any job involving a lot of metalwork.

Where the S1122EF Bi-Metal Blade Earns Its Keep

The milled and wavy set (MWS) tooth pattern is what makes this blade worth talking about. Wavy set teeth distribute the cutting load across multiple teeth at once, which reduces snagging and produces a cleaner, straighter cut than a standard set. On thin sheet metal in particular, this keeps the blade tracking true rather than wandering or chattering across the surface.

Blade Geometry and What It Means in Practice

MWS teeth are designed for thin-walled materials — sheet steel, light gauge metal sections, metal cladding. The fine tooth pitch means more teeth are in contact with the material at any point, which reduces the tendency to grab or tear. It won’t win prizes for raw speed through thick bar stock, but for clean, controlled cuts in sheet metal it’s a solid choice.

Packed in fives, these blades fit any reciprocating saw using the standard universal shank, so there’s no compatibility headache. Keep a box on the van and you’re covered for most metal cutting work that comes your way.