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Jakosti dle chemické analýzy

W.Nr. 1.2842
The most widely used universal tool steel 1.2842 (90MnCrV8, 19312, 19313) for cutting and pressing tools. It features the dimensional stability during heat treatment and good hardenability in oil. Good combination of high surface hardness and toughness after quenching and tempering treatment. It is wear resistant, with the good cutting property. Very good hot formability and good machinability in the annealed condition. The steel is suitable for making of tools with good durability and low operation costs. The steel is suitable also for polishing. Strength 740 MPa. Hardness in the soft annealed condition is max 220 HB. The attainable hardness after quenching is 63 HRC.
Steel 1.2842 (90MnCrV8, 19312, 19313) is used for cutting and pressing tools. Tools for cold cutting, i.e. all sorts of tools for cutting on press and punching of materials with smaller thicknesses, particularly punching dies and cutting punches complicated in shape and requiring very good dimensional stability during the heat treatment. Shear blades for cutting smaller material thickness, disc and circular knives for cutting paper, etc. Tools for cold working, i.e. tools for bending, rolling, drawing and stamping of materials with small thicknesses. Small moulds for forming of plastic materials and rubber, less stressed moulds for forming of powder masses, pottery and ceramic materials. The steel 1.2842 (90MnCrV8, 19312, 19313) is used also for all types of measuring instruments, templates, calibers, and rulers. Guide fences, guide skirt boards, skids, slide ways, traversing guides. Simple folding and pressing tools. Plates for single-purpose machines construction.
Stress-relief annealing 650 - 680°C
Soft annealing 680 - 720°C
Hardening 780 - 800°C
Quenching Oil, Salt bath
Tempering 180 - 200°C
Hardness after quenching 62 HRC
Tenacity max. 770 N/mm2
Hardness max. 229 HB
Soft annealed
max. 0,030
max. 0,030
19 313
K 720
90 MCV8