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DB 6 Hot Work Steel

CHEMICAL COMPOSITION OF (Typical Analysis in %)


C Si Mn P S Cr Ni Mo V
0.50-0.60 0.10-0.40 0.65-0.95 <0.015 <0.004 1.0-1.20 1.50-1.80 0.45-0.55 0.07-0.12
USA Europe Germany China Japan India R. of Korea Russia
AISI / SAE En DIN, WNr GB JIS IS KS GOST
A681 L6 55NiCrMoV7 56NiCrMoV7 5CrNiMo SKT4 T55Ni7Cr4Mo5V1 STF4 4ChMNFS

Supplies Die Block Steel DB6 / DIN 2714 in India and abroad. DB6 tool steel is an extreme pass on steel with high treating resistance and great through-solidifying properties. Its nickel substance has it uncommonly effect safe – a highly recommendable element for vast mallet & press bites the dust alike. This evaluation is generally supplied in toughened condition or extinguished and tempered to 1300 N/mm² & a working hardness of 370 to 410 HB (round) or 355 to 400 HB (square, level).

Utilized as standard die block steel for manufacturing passes on of different kinds, press bites the dust, expulsion kicks the bucket, retainer plates, heavily clad trim bites the dust, hot shear sharpened pieces of steels and instrument holder.


PROCESS ROUTE


EAF+LF+VD+UPSET+FORGED+ANNEALED+ROUGH TURNED FOR ROUNDS/MILLED FOR FLATS+OIL QUENCHED AND DOUBLE TEMPERED+ROUGH TURNED FOR ROUNDS/MILLED FOR FLATS


STEEL PROPERTIES


The exceptional hot work pre-solidified tool steel has great toughness and high wear resistance. DB6 die steel is generally provided in hard, quenched, tempered and annealed condition in strengthened condition in exceptional cases. Normally it’s working hardness is 360-430 BHN. This steel grade is the updated type of DIN 2713 for higher efficiency and performance.


APPLICATIONS


Dies for Specially Drop and Close Die Forgings for Hammers & Mechanical Presses, Die Moulds, Shoe Blocks, Die Holder, Piston Rods, Bolster, Cranks, Cassettes, Plastic Moulds, Shearing Blades, Tools etc.


PHYSICAL PROPERTIES

Coefficient of Thermal Expansion at °C 10¯⁶ m / (m*K)
20-100 12.1
20-200 13.1
20-300 13.2
20-400 13.5
20-500 14.1
20-600 14.3

Thermal Conductivity at °C W / (m*K)
20 35.0
350 39.0
700 36.0

HEAT TREATMENT

Soft Annealing °C 650-710
Cooling Furnace
Hardness HB max. 240
Hardening °C 840-880 860-900
Quenching Oil Air
Hardness after quenching HRC 57 55

Tempering °C after quenching 100 200 300 400 450 500 550 600 650
in Oil – HRC 56 54 52 49 47 46 43 38 34
in Oil – HRC 54 52 50 47 45 43 40 36 32