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JIS SKD-11 Details

The steel is a widely used international air cooling hardening cold work die steel.Approved by electric furnace smelting and the electroslag solubility, high purity, better toughness, uniform organization, has good high temperature strength, toughness and resistance to high temperature fatigue performance, can withstand the temperature shock.
High hardness, high wear resistant uniform eutectic carbides, good toughness, not easy craze, > 62 HRC hardness after quenching.At 525 ℃ nitriding processing time for 20 h/h/h, 60 ammoniation layer depth of 0.25 mm / 0. 30 mm / 0. 35 mm, the surface hardness is 1250 hv,At 570 ℃ nitriding processing time is 2 h, nitriding depth 10 ~ 20 microns, the surface hardness is 950 hv.

JIS SKD-11 Standard Download

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SKD-11 Application:Mainly used for cold working mold: gauge, die for thread rolling, cutting tool for metal, forming roll, die for press.
Category Type Grade Designations
Grades Tool Steels & Die Steels SKD-11 Japan - JIS , G 4404 (2006) - Alloy tool steels
Chemical composition(mass fraction)(wt.%)
Elements Min.(≥) Max.(≤)
C 1.4 1.6
Si - 0.4
Mn - 0.6
P - 0.03
S - 0.03
Cr 11 13
Mo 0.8 1.2
V 0.2 0.5
Mechanical properties of grade SKD-11
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
469 (≥) 588 (≥) 12 13 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Physical properties of grade SKD-11
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
322 (≥) 641 (≥) 14 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
514 628 821
SKD-11 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
SKD-11 JIS Japan
Mainly used for cold working mold: gauge, die for thread rolling, cutting tool for metal, forming roll, die for press.

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