Tool and die steels are high carbon steels (either carbon or alloy) possessing high hardnessstrength and wear resistance.

Tool steels are heat treatable.

In order to increase hardness and wear resistance of tool steels, alloying elements forming hard and stable carbides (chromium, tungsten, vanadium, manganese, molybdenum) are added to the composition.

Designation system of one-letter in combination with a number is accepted for tool steels.

The letter means:

  • W – Water hardened plain carbon tool steels
  • O, A, D – Cold work tool steels
  • S – Shock resistant low carbon tool steels
  • T,M – High speed tool steels (T-tungsten, M-molybdenum)
  • H – Hot work tool steels
  • P – Plastic mold tool steels

Chemical compositions of some tool and die steels
Properties of some tool and die steels

W – Water hardened plain carbon tool steels

Applications: chisels, forging dies, hummers, drills, cutters, shear blades, cutters, drills, razors.

Properties: low cost, very hard, brittle, relatively low hardenabilityhardenability, suitable for small parts working at not elevated temperatures.

O, A, D – Cold work tool steels

Applications: drawing and forging dies, shear blades, highly effective cutters.

Properties: strong, hard and tough crack resistant.

O -Oil hardening cold work alloy steels;

A -Air hardening cold work alloy steels;

D -Diffused hardening cold work alloy steels;

S – Shock resistant low carbon tool steels

Applications: tools experiencing hot or cold impact.

Properties: combine high toughness with good wear resistance.

T,M – High speed tool steels (T-tungsten, M-molybdenum)

Applications: cutting tools.

Properties: high wear heat and shock resistance.

H – Hot work tool steels

Applications: parts working at elevated temperatures, like extrusion, casting and forging dies.

Properties: strong and hard at elevated temperatures.

P – Plastic mold tool steels

Applications: molds for injection molding of plastics.

Properties: good machinability.

Chemical compositions of some tool and die steels

AISI No.C, %Mn,%W,%Si,%Cr,%Mo,%V,%Co,%
W11.00.350.30
O10.951.10.50.300.5
A21.00.300.305.01.0
D21.550.300.3012.01.0
S10.50.302.50.301.5
T151.60.3012.00.304.05.05.0
M20.90.306.00.304.05.02.0
H130.350.401.05.01.51.0
P200.41.50.41.90.2

Available Sectional Forms

DIN                   W.Nr                  AISI         C Ni Cr Mo Mn Others Hardness  HB Hardness  HRC Thickness range  mm  inches Width mm  inches
42 CrMo 4 1.7225 4140 0.41 1.00 0.20 0.06 V 258-302 26-32 7-135 0.27-5.3 1000-3500 39.3-137.9
40 CrMnMo 7 1.2311 P20 0.40 1.90 0.20 280-325 29-34 7-610 0.27-24.0 1000-2500 39.3-98.4
40 CrMnNiMo 8-6-4 1.2738 P20 + Ni 0.40 1.00 1.90 0.20 1.5 280-325 29-34 7-610 0,27-24.0 1000-2500 39.3-98.4
55 NiCrMoV 7 0.55 1.70 1.10 0.50 0.9 V, S:0.07 360-400 39-43 8-320 0.31-12.6 1000-2500 39.3-98.4
0.25 0.75 2.00 0.60 1.15 B,V 350-380 38-42 15-610 0.59-24.0 1000-2500 39.3-98.4
30CrMo 4 1.7225 4130 0.30 1.00 0.16 258-302 26-32 7-135 0.27-5.3 1000-3500 39.3-137.9 Cores and cavities with basic  requirements
40 CrMnMoS 8-6 1.2312 P-20 +S 0.40 1.90 0.20 1.5 S: 0.06 280-325 29-34 7-610 0.27-24.0 1000-2500 39.3-98.4
55 NiCrMoV 7 1.2714 0.55 1.70 1.10 0.50 0.9 V 360-400 39-43 8-320 0.31-12.6 1000-2500 39.3-98.4
X 42 Cr 13 1.2083 420 0.40 13.00 0.6 280-310 29-33 15-130 0.59-5.1 1000-3500 39.3-137.9 Stainless cores and cavities Corrosion-resistant holders  and support plates
X 36 CrMo 17 1.2316 0.40 16.00 1.03 0.9 280-325 29-34 15-150 0.59-5.9 1000-3500 39.3-137.9
X 33 CrS 16 1.2085 420F mod 0.33 16.00 1.1 S: 0.07 280-325 29-34 15-350 0.59-13.8 1000-3500 39.3-137.9
420F mod 0.40 16.00 1.03 0.9 S: 0.07 280-325 29-34 15-300 0.59-11.8 1000-2500 39.3-98.4
 DIN              W.Nr         AISI    JIS             CSNiCrMoVOthersHardness HBThickness range  mm  inches

Width

mm  inches

90 Mn Cr V 81.2842020.900.0010.350.10<23010-1600.4-6.31000-300039.3-118.1

Stamping tools to pro-  cess mild steels and low  thicknesses

general tool steel purpose

100 Mn Cr W 41.2510010.900.0010.550.10W<21210-1600.4-6.31000-300039.3-118.1
 A 60.700.0011.101.00<22015-1500.59-5.91000-260039.3-102.3
 S 50.550.0010.250.350.20<23015-1100.59-4.31000-300039.3-118.1Wood processing
 S 70.500.0013.251.350.20<22510-2000.4-7.91000-260039.3-102.3High thoughness, low to  medium wear resistance for  shear blades and stamping  tools (mild steels and medium  thicknesses)
X 100CrMo V5.11.2363A 2SKD121.000.0015.200.950.20<24010-1200.4-4.71000-260039.3-102.3
X 153CrMo V121.2379D 2SKD 111.550.00111.750.750.75<25515-1000.59-3.91000-200039.3-78.7

High wear resistance with  limited toughness and chip-  ping resistance. Shear blades,  stamping processing of tools  (except high strength steels)

Combining high wear and high  chipping resistance.

Stamping tools, shear knives  to process high strength  steels and high thicknesses

High toughness – Medium  softening resistance –  Forging tools

X 210 Cr 121.2080D 3SKD 12.000.00112.25<24815-1000.59-3.91000-200039.3-78.7
X 210 Cr W121.2436D 62.100.00111.50W=0.70<25515-1000.59-3.91000-200039.3-78.7
X 45 Ni Cr Mo 41.27670.450.0013.901.30<26015-350

0.59-

13.8

1000-300039.3-82.7
X 38 Cr Mo V 5.11.2343H 11SKD 60.390.0015.151.250.35<23015-350

0.59-

13.8

1000-210039.3-82.7Good softening resistance for  forging dies and dies casting  dies (short series)
X 40 Cr Mo V 5.11.2344H 13SKD 610.400.0015.001.301.00<23015-350

0.59-

13.8

1000-210039.3-82.7
~ X 38 Cr Mo  V 5.1~1.2343~H 11~SKD 60.360.0015.101.40.35Si=  0.30<230

100-

360

3.9-14.11000-210039.3-82.7

Improved grades for die  casting dies and forging. High  toughness,high heat checking  resistance

NADCA approved material

55 Ni Cr Mo V 71.2714SKT40.550.0011.701.100.500.10360-40015-350

0.59-

13.8

1000-200039.3-78.7Holder blocks and dies for  closed die forging
0.190.0011.002.000.800.20B360-400

200-

500

4-20200078.7Forging dies for closed die  forging with improved life  performance

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RMT has diversified into multi-product group deals in allm form of sections in Stainless, Carbon, Tool, Die, Alloy Steels and Non-Ferrous and Pure Metals, Piping Solution, pipe Fittings, Flanges, Coils, Sheets, Strips and more in Wide Range of Sizes.

GET IN TOUCH

4/5/6, Pearl Park, Chinchola Road, opposite to A.K. Tools, Near XLO Point, Ambad-Link Road, Ambad, Nashik - 422010.

+91 9890874482

+91 9890874482

info@rmtindustry.com

Mon - Fri 9:00 Am- 7:00 PM IST Sunday 9:00 Am to 7:00 PM IST