In Engineering: ultra high tensile applications, shafts, gears, bolts, spline shafts, crusher shafts, eccentric shafts, hard wearing bushes and high impact pistons In mining: rock drill, knock off bits, mill hammers, cyclone plates, high tensile mechanical and thermal shock applications In Tooling: plastic extrusion dies, die bolster rings and punches

Heat the steel carefully to the forging temperature of 1000-1100°C, soak well. After forging, cool slowly in a furnace to 100°C maximum and anneal immediately thereafter.

To obtain the softest condition heat carefully to 630-650°C. Soak for a minimum of 2 hours, then cool in the furnace / in air. It is advisable to repeat this treatment to obtain the best machining.

Where the machining operations have been severe, we recommend stress relieving 835M30 steel before finish machining and hardening. Heat carefully to 630-650°C then cool in the furnace or in air.

Heat uniformly to 810-830°C and when thoroughly soaked at this temperature cool in air or quench in oil according to mass. Hardening from neutral salt baths will help to prevent scaling or decarburisation and is strongly recommended. Pre heat at 300-400°C, raise to the hardening temperature of 810-830°C, quench into salt standing at 300-320°C. Withdraw and cool in air. As an alternative tools may be vacuum hardened. If desired the hardened and tempered tools can be cyanide hardened which gives a shallow carburised case to die surfaces with increased hardness values up to Rockwell C56-60. Temper as soon as tools are at hand-warm temperature.