How to distinguish between mold materials and SKD11 and D2

SKD11 is the Japanese version of D2. It should be said that it is the same steel as D2 in the United States, and the composition is also very close.

However, the chromium content range of Japanese D2 should be slightly higher, so the rust resistance is better than that of the American version of D2.

In addition, if it is a Japanese original heat-treated D2, its toughness is higher.

The domestic D2 grade is CR12MO1V1, and the composition of this steel grade is almost the same as that of D2. However, due to the difference in smelting methods, there is a slight difference in performance. It is mainly reflected in toughness, wear resistance, and rust resistance.

However, there are many domestic mold stores with CR12MOV claimed to be D2. The gap between this grade of steel and D2 is still relatively large. There is also a big difference in color.

Domestic CR12MOV, the color is orange or slightly ivory in the steel color. Wire cutting.

The section is yellow. The texture is more brittle than D2, and the hardness can be processed to HRC58-60, and the actual HRC59 is generally achieved.

In the case of SKD11, the color is bright, silvery-white or slightly purple. The wire-cut section is also white. The texture is relatively tough, and it can be heat treated to about HRC61. The wear resistance and rust resistance are significantly higher than that of CR12MOV.

Hitachi Metals SKD11 is a general purpose cold work tool steel with good wear resistance. It has good quenchability, and the quenching deformation is small.

Chemical Composition: C, Carbon, Si, Silicon, Cr, Chromium, Mn, Manganese, Molybdenum, V, Vanadium, Tungsten, Tungsten, Ni, Nickel, P, Phosphorus, Sulfur.

Main uses: This steel is easy to turn, and should be made of sharp knife edges, scissors, circular saws, metal stamping dies, forming rolls, general cold work molds cold or hot dressing dies, drum edges, screw lines, wire molds, milling cutters, punching dies, round drums, power transformer heart punching dies, cutting steel sheet rolling knives, steel pipe forming rollers, special forming rollers, precision gauges, cold-pressed tools with complex shapes, metallurgy, tin molds, plastic molds, screw heads, etc.

D2 steel is alloy tool steel.

Ingredients: C=, Cr=, Mo=, V=, MN=, Si=

Characteristics: Rich in cemented alloy carbide, so high wear resistance, good toughness, impact resistance, high gold content, so high temperature resistance softening ability, after hardening can be carbonized.

Scope of use: cold-acting die steel, tooth rolling, tooth rubbing and steel ball formwork, punching die, circular shear blade, deep oil drawing die, plastic mold with high wear resistance demand.

Heat treatment: 1000 1050 degrees oil quenching (HRC63) after spheroidization annealing, and then tempered according to the required performance of use, low temperature tempering 100 250 degrees, HRC61 63, suitable for objects requiring high hardness and high toughness.

High temperature 500 550 tempered 3 times, HRC58 62, tempered in the range of 400 550 degrees, the mold will not reduce hardness, suitable for high hardness objects used at this temperature!

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The meaning of pro-mold material SKD is as follows: SKD is a high-wear-resistant toughness general-purpose cold work die steel, high-carbon and high-chromium alloy tool steel and vacuum degassed refined steel. The steel is pure, with good hardenability and good hardenability of quenching wheel.

The steel is spheroidized and annealed and softened, with good machinability, fine and uniform carbide particles, and there is no need to worry about quenching cracking and special addition of molybdenum and vanadium. Basic informationFunctional mold making, used in the field of plastic molds, scissors, circular saws, metal stamping dies, forming rolls, etc.

Quenching: pre-heating to 550-600, subheating to 950, and then heating to a: 1,220 1250; b：

1，200℃～1230℃。Quenched in a sinister oil, but the oil temperature must be moisturized at 40-60 (a). general tools; b。

Tempering: Heating to 550-570, staying at this temperature, and then cooling in still air, tempering must be repeated Secondary hardness: HRC63 or more.

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Said to be equivalent to domestic.

cr12mov

Not entirely true, because.

The alloy composition of SKD11 is higher than that of CR12MOV. The performance is also a little better than the CR12MOV. It belongs to the Japanese code name.

SKD11 belongs to the Japanese standard high carbon and high chromium type cold compound die steel, the implementation standard: JIS G4404-2006

SKD11 has good toughness and high temperature fatigue resistance, can withstand temperature fusion, is suitable for long-term work at high temperatures, has good cutting performance and polishing performance, is suitable for punching dies and imprinting dies, various scissors, inlay blades, woodworking blades, threaded rolling dies and wear-resistant sliders, cold heading dies, thermosetting resin molding molds, advanced gauges and other deep drawing molding, cold extrusion dies.

The chemical composition of SKD11 is shown in the figure below

The difference between D3 die steel and SKD11 is that the composition content of the two materials is different.

SKD11 is a high wear toughness cold work inspection die steel material.

The domestic name is CR12MO1V1, and the United States is called D2

SKD11 high-carbon and high-chromium alloy tool steel and vacuum degassed refined steel, the steel buried nuclear material is pure, and has good hardenability with good hardenability and small quenching deformation. SKD11 die steel is a Japanese tool steel grade, which is produced by Hitachi and Datong Steel Mills, Hitachi SKD11 is called SLD, and Datong Steel Mills is DC11. It is suitable for punching dies and imprinting dies, various scissors, inlay blades, woodworking knives, bending and digging chips, threaded rolling dies and wear-resistant slider cold heading dies, thermosetting resin forming dies, advanced gauges and other deep drawing molds and cold extrusion dies.

Material & **.

1. D3 mold steel slow buried limb is made of new cold work die steel, which has the characteristics of good toughness and good wear resistance. SKD11 is made of ordinary hot work die steel, which has poor toughness and is not wear-resistant. Disturbing the world.

2. D3 mold liquid Li Gugang is different from SKD11**, D3 mold steel is 3800 yuan per ton. SKD11,3500 yuan per ton.

D2 alloy tool steel is a high wear-resistant micro-deformation cold work die steel, which is smelted by the patented vacuum arc technology of Fincola in the United States. The carbon content is as high, the chromium content is 12%, and the hardness of heat treatment can reach 60HRC, and the D2 cold work alloy tool steel imported from the United States can be used to manufacture cold work dies with large cross-section, complex shape, high impact force and high wear resistance, such as silicon steel sheet die, cold cutting scissors, trimming die, metal stamping die, drawing die, stainless steel sheet punching die, high hardness punching die, wire rolling die, hardware parts production and machinery manufacturing.

SKD11 is a Japanese standard grade of cold work die steel, Hitachi trade name SLD die steel (the latest improved version is called SLD-magic), and Daido Steel Mill trade name is DC11 die steel. Both of them do not have factories in the mainland, the most well-known in the industry, and the most advanced steel is a kind of air-cooled hardening cold work die steel that is widely used in the world. It is smelted by electric furnace and redissolved by electroslag, with high purity, better toughness, uniform structure, good high temperature strength, toughness and high temperature fatigue resistance, and can withstand sudden temperature changes.

D2 alloy tool steel belongs to high wear-resistant micro-deformation cold work die steel.

SKD11 is a Japanese standard grade of cold work die steel.

D2 (T30402) die steel.

Similar to national grades.

China CR12MO1V1

US D2 equivalent) German x135CRMOV12

ASSAB (Sweden) XW-41 Bohler (Austria) K110 Daido

Datong, Japan) DC11

D2 die steel high wear resistance, micro deformation cold work die steel, wind hard tool steel, high carbon content, high chromium content, heat treatment hardness up to steel can be used to make large cross-section, messy shape, full of impact, high wear resistance of cold work die steel, such as silicon steel sheet die, cold cutting scissors, trimming die, etc. Alias: D2 punching plate, place of origin: United States.

Characteristics: high wear resistance, can be vacuum heat treated to HRC60°-62°, excellent processing function.

Uses: used in metal stamping die, drawing die, stainless steel sheet punching die, high hardness punching die, shear knife die, wire rolling die, hardware parts production, mechanical production, etc.

Chemical Composition: C: Silicon Si: Manganese Mn: Chromium Cr: Vanadium V: Molybdenum Mo:

Factory condition annealed to HB255

Round steel plates.

The company also supplies products: DC53, SKD11, 4CR13(H), NAK80, H13, S136, SKD61, M2, 6542, M35, M42, D2, CR12, CR12MOV, CR12MO1V1, CR12MO1V, 4CR5MOSIV1, 8407 and so on.

SKD11 and D2 originally belonged to high-carbon, high-chromium cold work die steels. It has very good wear resistance and heat treatment micro-deformation characteristics, and heat treatment hardness HRC59-61. It is widely used in continuous metal stamping dies and punch materials.

But the impact toughness is average. The differences between SKD11 and D2 are as follows:

1) The place of birth is different. SKD11 is the collective name of the Japanese Ministry of Industry, D2 is the American mold steel grade, and the alloy composition is CR12MO1V1. However, the composition of SKD11 alloy produced in China is lower than the D2 standard.

2) The softening resistance to high temperature is different. When high heat is generated by high-speed stamping, the hardness of SKD11 decreases more quickly and the punch is more susceptible to wear. For high-speed stamping dies, the wear resistance of D2 is about twice that of SKD11.

3) The wear resistance performance is different. Due to the different vanadium V content of wear-resistant zinc alloys, the wear resistance of D2 is superior to that of SKD11.

4) The hardening performance is different, and the hardening performance of D2 is higher than that of SKD11. D2 mold steel for large molds, the core hardness and surface hardness are more uniform.

5)**No, the D2 is sold at a higher price than the SKD11.

D2, SKD-11, for cold stamping die steel, wear resistance, toughness, hardness is good!

D2 material is a kind of high-carbon and high-chromium alloy tool steel, which has high hardness and wear resistance after heat treatment, and has the characteristics of strong hardenability and good dimensional stability. D2 die steel is a kind of high-carbon and high-chromium alloy tool steel, which has high hardness and wear resistance after heat treatment, and has the characteristics of strong hardenability and good dimensional stability. D2 round bar specification .

D2 round bar characteristics.

Vacuum degassing and refining process steel is pure.

Spheroidization annealing and softening treatment, good cutting performance.

Strengthened element vanadium, molybdenum special addition, extremely excellent wear resistance.

Chemical composition. Carbon C:

Silicon SI:

Manganese mn:

Sulfur s:

Phosphorus p:

Chromium Cr: Nickel Ni: Permissible Residual Content

Copper Cu: Permissible residual content

Vanadium V: Molybdenum Mo:

D2 Round Bar Main Features:

D2 round bar is a tool steel containing 12% chromium alloy, and its characteristics are:

High abrasion resistance. High compressive strength.

Good dimensional stability.

Good processability with.

Good toughness.

Excellent resistance to tempering and softening.

The main uses of D2 round bar:

High-performance cutting tools.

Precision hardware mold.

Parts that require high strength.

Factory condition: HB225

SKD11 is an impact-resistant tool (mold) steel in Japanese alloy tool steel, and SKD11 is mainly used as a wear-resistant and non-deformed mold.

Japanese tool steel is often represented by S + steel grade symbol + sequence number. Example: SK1, SK7, SKS2, SKD4 Steel Grade Symbol:

K-Carbon Tool Steel, KC-Hollow Steel, Biju KD-Alloy Die Steel, KH-High Speed Tool Steel, KS-Alloy Special Tool Steel, KT-Forged Tool Steel.

SKD11 die steel is a general cold work die steel with good wear resistance, good quenchability, and small quenching deformation.

SKD11 die steel main uses:

This steel is easy to turn, and should be made of sharp knife edge, scissors, circular saws, metal stamping dies, forming rolls, general cold work molds or hot and cold dressing dies, drum edges, screw lines, wire molds, milling cutters, punching dies, round drums, power transformer heart punching dies, cutting steel sheet rolling knives, steel pipe forming rollers, special forming rollers, precision gauges, complex shapes of cold work tools, metallurgy, tin molds, plastic molds, screw molds, screw headings and so on.

SKD11 steel features: which key has good wear resistance and good wear resistance of the general mold steel, good quenchability.

Chemical Composition (Parts) (

si<=

mn<=

cr:11~13

s<=p<=ni<