Mutt hoe

MUTT HOE

Material:

hot forged carbon steel, hardened and tempered, at a maximum the hardened zone should reach halfway up the middle of the blade

Corrosion protection:

black paint

Quality of make:

no excess metal in the eye, no dent on the cutting edge, reinforced head with a rib from the eye to the middle of the blade length

Hardness Rockwell C:

35 minimum to 48 maximum HRC in hardened zone of the blade

Carbon content:

0.5% to 0.8%

Manganese content:

0.6% to 1.2%

Silicone:

0.37% maximum

Phosphorus & Sulphur:

0.06% maximum

Dimensions, full piece:

70 x 250mm +/-10mm

Hole diameter:

straight neck, low end 43mm, top end 48mm +/-2mm

Weight:

0.700kg +/- 50g, without handle

Strength testing:

- Using a fitted, standard hardwood handle, clamp the blade of the hoe near the handle in a horizontal position. Gradually apply a load of 45kg and maintain it for 2 minutes. This should not result in any damage to the blade or a loosening of the handle, and no permanent set in excess of 25mm.

- With one centimetre of the end of the blade secured in a clamp, move the handle back and forth 30 degrees. There should be no permanent set greater than 25mm.