SKD11 Tool Steel

SKD11 Cold Work Steel

JIS SKD11 Tool Steel is a high-carbon and high-chromium alloy tool steel that is used for making long-life high-precision cold-work dies. SKD11 tool steel?has good wear resistance and size ability after heat treatment. Otai special steel is JIS SKD11 tool steel china supplier and?stockholders.

Related Specifications?A681-1999 ?| Jis G4404(2000) | GB /T1299

AISI SKD11 Tool Steel Data PDF file DOWN

SKD11 Tool Steel Chemical composition

C(%) 1.40~1.60 Si(%) ≤0.40 Mn(%) ≤0.60
P(%) ≤0.030 S(%) ≤0.030 Cr(%) 11.0~13.0
Mo(%) 0.80~1.20 V(%) 0.20~0.50

SKD11 steel Equivalent Tool?Steel | flat steel bar

USA Germany China Japan France England Italy ISO
D2 / T30402 1.2379 /?X155CrMoV12-1 CR12MO1V1 / CR12MOV SKD11 X160CrMoV12 ?BD2 X155CRVMO121KU 160CrMoV12

Form of Supply

SKD11 tool steel, we can supply the?round bar, flat bar, plate and square block. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

Heat treatment Related

  • Annealing of SKD11 Tool Steel | JIS Cold work Alloy Tool?steel flat bar

Annealing temperature / ℃: 830 ~ 880,?Hardness after annealing HRC: ≤255

  • Hardening of JIS ?Alloy tool steel SKD11?steel flat bar

Quenching temperature ?/ ℃: 1030,?Quenching medium: air-cooled,?Tempering temperature ?/ ℃: 180
After quenching and tempering hardness HRC: ≥58

  • Forged of Japanese JIS SKD11?steel bar

Thermal processing temperature / ℃ | Start: 1000
Thermal processing temperature / ℃ | Termination: 800

Physical Properties and Mechanical Properties of JIS SKD11?flat steel bar

The mechanical properties of annealed?JIS SKD11?steel are outlined in the table below

Poisson’s ratio 0.27-0.30,?Elastic modulus 190-210 GPa ,

The Physical proerties of skd11 cold work alloy tool steel as below:

Density 7.7 x 1000 kg/m3?;?Melting point 1421°C (2590°F)


SKD11 Tool Steel is used in the making of knife-edge mold, scissors, circular saw blades, metal stamping mold. Used to make cold work or hot work dressing dies, sides of rollers, screw lines, lines dies, transformer core stamping dies, rolled knives, steel tube forming rollers, special molding rollers, screw heading molds, etc. Also used for blanking dies, stamping dies and pressing dies with a thickness ≤ 6mm. It can also be found in the production of various kinds of scissors, inlaid blades and thread rolling dies. It is also used to make wear-resistant slider cold heading dies, deep drawing molding dies, cold extrusion dies and in the making of thermosetting resin molding dies and common plastic dies.

Regular size and Tolerance of JIS SKD11 Cold Work Tool Steel

Steel round bar: Diameter ? 5mm – 3000mm

Steel plate/ steel flat bar: Thickness 5mm – 3000mm x Width 100mm – 3500mm

Steel Hexagonal bar: Hex 5mm – 105mm

Others EN3 steel have not specified size, pls contact our?experienced sales team.

1) Hot Rolled round bar
Diameter Tolerance
Diameter Tolerance
6.4~15.8 -0.038 ~0.038 181~<206.2 0~1.6
15.8~<77.6 0~0.10 206.2~<257 0~2.4
77.6~<103 0~0.15 257~<307.7 0~3.2
103~<181 0~0.78 ≥307.7 0~4.7
2) Hot Rolled steel plate
Thickness Tolerance
Thickness Tolerance
≤25.4 -0.41~0.79 >127~152 -1.60~2.39
>25.4~76 -0.79~1.19 >178~254 -1.98~3.18
>76~127 -1.19~1.60 >254~305 -2.39~3.96

Others have not specified size, pls contact our?experienced sales team.


SKD11 tool steel round bar and flat sections can be cut to your required sizes. SKD11 ground steel bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. SKD11 tool steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your SKD11 tool steel questions by email or telphone.?The questions will be reply in 24 hours.



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