1.2379 / D2 / Cr12Mo1V1 cold work tool steeldescription
Chemical Composition(%):
Grade | C | Si | Mn | P | S | Cr | Mo | V |
1.2379 | 1.45-1.60 | 0.10-0.60 | 0.20-0.60 | ≤0.030 | ≤0.030 | 11.00-13.00 | 0.70-1.00 | 0.70-1.00 |
D2 | 1.40-1.60 | 0.10-0.60 | 0.20-0.60 | ≤0.030 | ≤0.030 | 11.00-13.00 | 0.70-1.20 | 0.50-1.10 |
Cr12Mo1V1 | 1.40-1.60 | ≤0.60 | ≤0.60 | ≤0.030 | ≤0.030 | 11.00-13.00 | 0.70-1.20 | 0.50-1.10 |
Available sizes:
Round: Dia. 20 – 250mm, forged: 60-650mm
Flat: Thickness 25 – 250mm, width 40 – 600mm
Delivery condition: EAF or ESR, Hot rolled or forged, Peeled orblack surface, normally annealed.
Properties :
High carbon and high chromium, ledeburitic 12% Cr alloyed coldwork tool steel, excellent abrasion resistance due to a large volume of carbidesin the microstructure, high cutting ability with edge holding properties, highcompression strength, excellent deep hardenability and toughness properties,dimensional stability during heat treatment, high resistance to softening atelevated temperatures. Suitable for nitriding and electrical dischargemachining.
Applications :
High performance blanking, punching, stamping and cutting toolsand dies up to 6 mm sheet thickness, thread rollings, chasers and dies,precision blanking dies, longitudinal and circular shear blades for plastic,paper and metal, cold forming and bending tools, tools for drawing, deep drawingand cold extrusion, hobbing tools, woodworking tools, milling cutters, reamers,broaches, pressing tools for the ceramics and pharmaceutical industries, coldpiercers, measuring instruments and gauges, rolling cutters and shaping wheels,cold pilger mandrels, beading, flanging and straightening rolls, plasticinjection moulds, especially cutting tools of austenitic material whennitrided.
Heat Treatment :
Annealing : 800 - 850 °C
Hardness after annealing : Max. 250 HB
Stress relieving : 650 - 700 °C
Hot forming : 1050 - 850 °C
Hardening : 1020 - 1080 °C
Quenching media : Oil, Salt bath ( 220 - 250 °C or 500 - 550 °C ),Air or compressed air
Hardness after quenching : 63 - 65 HRC
Hardness after tempering :
Tempering °C | 100 | 200 | 300 | 400 |
HRC | 64 | 61 | 59 | 58 |
