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Black Surface Hot Work Tool Steel Flat Bar Hot Rolled Annealed Extrusion SKD61

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Guangzhou Changfeng Steel Co., LTD
City: Guangzhou
Province/State: Guangdong
Country/Region: China

Black Surface Hot Work Tool Steel Flat Bar Hot Rolled Annealed Extrusion SKD61

Brand Name : CF
Model Number : SKD61 / H13 / 1.2344
Certification : ISO/Mill Certificate
Place of Origin : China
MOQ : Negotiable
Price : Negotiable
Supply Ability : 1000t / Month
Delivery Time : 15-35 days
Packaging Details : Export Standard Packing or Customers'demand
Heat treatment : Annealed / Q + T
Surface treatment : Black/Peeled/Polished/Machined/turned
Delivery condition : Forged or Hot rolled
Test : SGS/Ut 100%/Element testing
Certificate : ISO/Mill Certificate
Shape : Round/plate/flat bar
Process : EAF+LF+VD+ESR
Payment Term : 30% Deposit, Balance by L/C at Sigth After Shipment
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Hot Rolled Annealed Extrusion Hot Work Tool Steel Flat Bar SKD61


SKD61 steel flat bar is used for the manufacture large impact load forging die, hot extrusion die, precision forging die; aluminum, copper and alloy die-casting mold.


Similar grades


GBDINAISIJISASSAB
4Cr5MoSiV11.2344H13SKD618407

Chemical Composition(%)


GradeCSiMnPSCrMoV
H130.32-0.450.80-1.200.20-0.50≤0.030≤0.0304.75-5.501.10-1.750.80-1.20
SKD610.32-0.420.80-1.200.20-0.50≤0.030≤0.0304.75-5.501.10-1.750.80-1.20
1.23440.38-0.420.80-1.200.30-0.50≤0.015≤0.0204.80-5.501.20-1.500.90-1.10
4Cr5MoSiV10.32-0.450.80-1.200.20-0.50≤0.030≤0.0304.75-5.501.10-1.750.80-1.20

Heat treatment


Delivery status: Brinell hardness HBW10 / 3000 (less than or equal to 235)


Quenching: 790 degrees ± 15 degrees preheating


1000 degrees (salt bath) or 1010 degrees (furnace control atmosphere) ± 6 degrees heating


Insulation 5 ~ 15min air cooling


550 degrees ± 6 degrees tempering annealing, thermal processing


Chemical heat treatment


Mold can be further strengthened If use gas nitriding or nitrocarburizing, but the nitriding temperature should not be higher than the tempering temperature, in order to ensure that the strength of the heart does not reduce, thus enhancing the service life of the mold.


Delivery condition


EF, or ESR, Hot rolled or forged, black surface or milling


Hardness: annealed to HB≤229



Usage


H13 is the introduction of the United States H13 empty hardening hardened hot for die steel. Its performance, use and 4Cr5MoSiV steel is basically the same, but because of its higher vanadium content, so the temperature (600 degrees) is better than 4Cr5MoSiV steel, hot work die steel is widely used in a representative steel.


Applications


1. Cu alloy extruded, die casting moulds.

2. Aluminum extruded moulds (such as Aluminum window frame, computer radiator).

3. Hot forging moulds (such as auto connecting rod, crank, stainless dinner knife).

4. Lead Zn and Al alloy die casting moulds (such as engine radiater, lights ang other decoration products).

5. Full hardness (52-54Hrc) plastiy moulds with igh polishing and long lifetime requirements, (such as bakelite plastic mould).


Hardness analysis


The carbon content in the steel determines the hardness of the quenched steel substrate.


According to the curve of the carbon content in the steel and the hardness of the hardened steel, the quenching hardness of the H13 die steel is about 55 HRC.


For tool steels, a portion of the carbon in the steel enters the matrix of the steel causing solid solution strengthening. The other part of the carbon will combine with the carbide-forming elements in the alloying elements into alloy carbides.


Hot work flat steel bar, in addition to a small amount of this alloy carbide residue, but also requires it in the tempering process quenched martensite matrix precipitated twice hardening phenomenon.


The properties of hot work tool steel are thus determined by the organization of uniformly distributed residual alloying carbon compounds and tempered martensite.


Thus, the content of C in steel can not be too low.




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