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JIS SKD-11 Details

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 Die Steels SKD-11 Japan - JIS , G 4404 (2006) - Alloy tool steels

Chemical composition(wt.%) of SKD-11 grade: G 4404 (2006)

Elements Min.（≥） Max.（≤） Similar Remarks
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
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.

Mechanical properties of grade SKD-11 G 4404 (2006)

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)
281 (≥) 555 (≥) 22 24 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade SKD-11 G 4404 (2006)

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
494 (≥) 312 (≥) 12 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 134
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
977 234 473

SKD-11 - Form of Supply

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
D3 ASTM USA
Cold-Work Tool Steel
X165CrMoV12 DIN Germany
High alloyed CrMoV steel for cutting tool and cold work tool steel
1.2601 DIN Germany
High alloyed CrMoV steel for cutting tool and cold work tool steel
SKD-11 JIS Japan
Mainly used for cold working mold: gauge, die for thread rolling, cutting tool for metal, forming roll, die for press.
SS 2310 SS Sweden
Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex,
X12M GOST Russia
Cold work die steel, steel hardenability, quenching tempering hardness, wear resistance, strength are higher than the Cr12.Shape is complex,
X160CrMoV12 / Z160CDV12 AFNOR France
Cold working alloy tool steels

Relevant products

SKD-11 Steel Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
Cr12MoV 12-160(T)*310-610(W)*L Plate or Sheet Tons 12.38 Hot-Rolled+Annealed+black Enquiry
1.2601 12-160(T)*310-610(W)*L Plate or Sheet Tons 11.22 Hot-Rolled+Annealed+black Enquiry
SkD-11 Round Bar Stock Φ30-Φ350 Round Bar Kgs 3102 Hot-Rolled+Annealed+black Enquiry

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