Excision Bi-Alfa Cobalt M42 Band Saw Blade 62013812-1140.3 1140 x 13 x 0.6mm 8/12 TPI

Excision Bi-Alfa Cobalt M42 band saw blades in 13mm widths, listed as a pack, in 5 blade specifications and 10 variants. The part codes in this listing carry a suffix after the length, for example 62013014-1140.3.

The maker describes this range as having HSS-M42 cutting tips: very hard, evenly distributed carbides in the tooth tips, formed during hardening and tempering, are given as the source of its high wear resistance. The tips have a martensitic structure and a high cobalt content, which the maker says give heat resistance and toughness and reduce wear at high sawing speeds, and a high chromium backing lets the blade withstand flexing stresses, tension and blade guide pressure (manufacturer-stated).

Product Guide p14 shows a normal tooth (N) and a hook tooth side by side (manufacturer-stated); the guide does not say which tooth form applies to which code. The listings include constant pitches (one figure) and combi pitches (two figures): the maker describes a constant pitch as the same distance from tooth to tooth, and for a combi pitch says the first figure is the largest distance between tooth tips and the second the smallest within one group (manufacturer-stated).

Where this product is used

• General machining of steel (manufacturer-stated)
• Carbon steels, stainless steels, copper and aluminium, as rated in the maker's guide comparison table (manufacturer-stated)

Features

• HSS-M42 cutting tips (manufacturer-stated)
• Bi-metal blade with 8% cobalt content (supplier-stated)
• Hard, evenly distributed carbides in the tooth tips, formed during hardening and tempering (manufacturer-stated)
• Martensitic tip structure and high cobalt content for heat resistance and toughness at high sawing speeds (manufacturer-stated)
• High chromium backing that withstands flexing stresses, tension and blade guide pressure (manufacturer-stated)

Common specifications

Key specifications

Selecting the right option

The pack lists lengths of 1140mm, 1335mm and 1440mm. Work out the length your saw needs by the maker's method: with the wheels set about the middle of their adjustment range, measure the distance between the wheel centres and the radius of each wheel, then add pi times each radius to twice the centre distance (manufacturer-stated). Choose the TPI from the option selector. The maker says the TPI has to suit the thickness of the material being cut or blade life is dramatically shortened, and suggests aiming for 5 to 7 teeth in the cut (manufacturer-stated). For band speed, its chart for bimetal blades (Product Guide p31) runs from 80 to 90 m/min on construction and machining steel down to 15 to 25 m/min on heat resistant steels (manufacturer-stated).

Related products

Also in this range: Bi-Alfa Cobalt M42 62013114, lengths 685mm to 1685mm, Bi-Alfa Cobalt M42 13 x 0.5mm, 10 TPI (620135010) and Bi-Alfa Cobalt M42 10 x 0.9mm, 10/14 TPI (620109114).