Nitriding Steels

For applications requiring high tensile strength and toughness values, in particular in small medium cross sections. 4140 is the most commonly used of the high tensile steels with a wide range of applications in automotive, Gear and Engine construction, Crankshafts, Steering knuckles, Connecting rods, Spindles, Intermediate gears, Pump and Gear shafts, Axles, Nuts and Bolts.  

Nickel, Chromium, Molybdenum steel for applications requiring high tensile strength and toughness values, particularly in large cross sections. Higher tensile and yield strength than 4140. Components for the aircraft, automotive and general engineering industries eg. Propeller shafts, connecting rods, gear shafts, and other automobile shafts. Heavy forgings eg: Rotors, shafts, discs. 

Pre-hardened steel with high purity levels, a good uniform structure and hardness, even in large section sizes over 400mm. This results in good toughness and polishability. Supplied hardened and tempered at a suitable operating hardness for shafts, crank shafts, and general engineering. Can be Nitrided or hard Chrome plated for extra resistance. 

Pre-hardened ( Tensile strength approximate 1000 MPa; hardness about 300 HB) mould steel with high purity levels, a good uniform structure and hardness, even in large section sizes over 400mm. This results in good toughness and polishability. Supplied hardened and tempered at a suitable operating hardness. Can be nitrided or hard Chrome plated for extra wear resistance. Good photoetching properties. Suitable for injection moulds and extrusion dies for plastics. Forming tools, press brake dies (with nitriding or local flame hardening) and machinery components, such as shafts, bolts and gears

Suitable for application requiring high toughness, with good wear resistance and compressive strength. Suitable for shafts, Pistons, Pins, Bushes, Thrust washers, down hold drilling tools, high stress linkages.

Note: Material is supplied in the annealed condition. Heat treat to appropriate condition to suit intended application. 

Suitable for heavy duty hot work tools and dies: mainly for light alloy die casting applications. Hot extrusion tools, hot shear blades. Can also be used for plastic moulding dies and Engineering components/Parts requiring good toughness and torsional characteristics (after appropriate heat treatment processing).

Premium Cr-Mo-V alloyed hot work steel with good resistance to thermal fatigue. This steel is produced by a special melting and refining technique and meets the requirements of NADCA #207-2008.

Used for plastic moulding, specially large moulds requiring high toughness and polishability, and general hot work applications (shear blades, forging dies, hot gripper dies, extrusion tooling). Containing less vanadium than the widely used H13 grade tool steel giving a higher toughness, with some reduction in wear and temper resistance. Possessing good resistance to heat checking (thermal fatigue) and thermal shock. 

Intended for applications demanding high temperature strength, toughness and temper resistance. Resistance to abrasion good at both low and high temperatures. Suitable for making tool holders and engineering components such as highly stressed drive shafts and transmission parts, conveyor rollers carrying hot parts, clamp jaws especially at elevated temperature.

BÖHLER M261 EXTRA is a precipitation-hardening steel grade for plastic moulds, featuring excellent machinability in the as-supplied condition (Hardness 38-42 HRC), i.e. solution annealed and aged, condition. There is no need for an additional heat treatment, significantly shortening the throughput time.

BÖHLER M461 EXTRA is a precipitation-hardening steel grade for plastic moulds, featuring excellent machinability in the as-supplied, i.e. solution annealed and aged, condition (Hardness 38 -42 HRC).

It has excellent nitriding properties and is suitable for making engineering components.