The heats and what each is used for: Sparkling or Sizzling heat. Never used. Destroys the metal alloy content and grain structure. White heat or welding heat. For welding mild steel and iron. Remove from fire when sparks begin to fly and stop forge welding when down to light yellow heat. Light Yellow heat. Best heat for forging wrought iron and mild steel. Try to obtain this heat before removing from the fire for forging. Sometimes this is described as a light welding heat.
Top definition. umh. Similar to uhm, it is a cross between uh and um. Used to describe a thought, comment or response that is lingering. umh...I'm not sure where to go for dinner.
UHMW is a thermoplastic which is extremely strong and virtually eliminates friction when sliding over other solid surfaces. Highly resistant to abrasion -in fact it is 10 times more resistant than carbon steel â UHMW is 15 times stronger than steel and up to 40 percent stronger than comparable materials. UHMW will also perform well in extreme hot and cold conditions and will help to protect boat hulls against electrolytic attack.