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Tool Steels

What Is Tool Steel - Type of Tool Steel

Tool steels are high quality steels made to controlled chemical composition and processed to develop properties useful for working and shaping of other materials.The carbon content in tool steel may range from as low as 0.1% to as high as more than 1.6%. They are alloyed with elements such as Chromium, Molybdenum,Vanadium Tungsten etc.

At Sunflag Tool Steels are produced through specially designed steel making process via Electric Arc Furnace followed by Ladle Refining and Vacuum Degassing and processed through ESR / VAR for ensuring homogeneous properties &Ultra clean material. Stringent control is practiced during designing of chemical composition and other process parameters during casting, rolling/forging and heattreatment.

Type & application of tool steels:

  1. Water hardening tool steel(e.g. cold heading, cutting tools, knives, reamers and cutlery etc)
  2. Shock resisting tool steel (e.g. chisel for hot and cold cutting, chuckiaws, gripper, cold shear, hot shear etc.)
  3. Cold worktool steel [3 types]:
  • Oil hardening cold worktool steel(thread cutting, die blanking, cold-forming, cold trimming, gauges etc.)
  • Medium alloy air hardening cold worktool steel (blanking, coining, cold forming, cold swaging, cold trimming
    tools, gauges etc.)
  • High carbon, high chromium cold work tool steel(die inserts, cold—forming, cold shaping, thread roll, cold
    trimming, wire drawing etc.)
  1. Low alloy special purpose tool steel(forging dies, die casing, file cutting, paper cutter, die bending, blanking and
    coining etc.)
  2. Mold tool steel(plastic mold)
  3. Hot work tool steel (die casting dies, hot extrusion dies, hot forging dies, hot swaging, hot trimming, hot shear,
    hot gripper etc).
  4. High Speed Steels (Single point cutting tools, broach insert, tap, drill, reamers, milling cutters, saws)

Supply Conditions

From Bloom, lngot or ESR Remelted ingot

Supply Condition
Forged, Annealed & Proof Machined
Forged & Annealed
Rolled & Annealed
Rolled,Annealed,Peeled&Ground
As Forged
As Rolled

Sizes

Hot Rolled Rounds 15 to 250 mm
Forged Rounds 160 to 500 mm
Flats/Plates 150 mm(T) * 450 mm (W)
Peeled & Ground 5 to 100 mm
Drawn & Ground 5 to 34mm
Forged Blocks 350(T)*600(W)*5460(L)
Flats/Plates can also be supplied in the following Thickness:
12,14,16,28,32,35,40,42,48,50,55,60,65,70,75,80,85,90,95,100,110,120,130,140,150

Grades of Tool Steels

Water-hardening tool steels

Shock-resisting steels

Oil-hardening cold-work steels

Air-hardening, medium-alloy, cold-work steels

High-carbon, high-chromium, cold-work steels

Low-alloy special-purpose tool steels

AISI UNS C Mn Si Cr Ni Mo W V Co
L2 T61202 0.45-1.00 0.10-0.90 0.50 max 0.70-1.20 0.25 max 0.10-0.30
L6 T61206 0.65-0.75 0.25-0.80 0.50 max 0.60-1.20 1.25-2.00 0.50 max 0.20-0.30

Low-carbon mold steels

Chromium hot-work steels

Tungsten hot-work steels

Molybdenum hot-work steels

AISI UNS C Mn Si Cr Ni Mo W V Co
H42 T20842 0.55-0.70 0.15-0.40 3.75-4.50 0.30 max 4.505.50 5.50-6.75 1.75-2.20

Molybdenum high-speed steels

Tungsten high-speed steels

Intermediate high - speed steels

AISI UNS C Mn Si Cr Ni Mo W V Co
M50 T11350 0.78-0.88 0.15-0.45 0.20-0.60 3.75-4.50 0.30 max 3.90-4.75 0.80-1.25
M52 T11352 0.85-0.95 0.15-0.45 0.20-0.60 3.50-4.30 0.30 max 4.00-4.90 0.75-1.50 1.65-2.25

Testing Facilities at Sunflag Steel

Unique Facilities at Sunflag

Tool Steels

What Is Tool Steel - Type of Tool Steel
Tool steels are high quality steels made to controlled chemical composition and processed to develop properties useful for working and shaping of other materials. The carbon content in tool steel may range from as low as o.2 to as high as more than 1.6% They are alloyed with elements such as Chromium, Molybdenum, Vanadium Tungsten etc.

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