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What is D2 die steel material?

What is D2 die steel material?
Update Time:2018-06-13
D2 steel has high wear-resistant, micro-deformation cold work tool steel, wind hard tool steel, carbon content up to 1.5%, chromium content up to 11.5%, after heat treatment hardness up to 60HRC. D2 steel, such as silicon steel die, cold cutting scissors, trimming die and so on.

chemical composition
Carbon C: 1.40 to 1.6
Silicon Si: ≤ 0.60
Manganese Mn: ≤ 0.60
Sulfur S: ≤0.030
Phosphorus P: ≤ 0.030
Chrome Cr: 11.50 to 13.00
Nickel Ni:  ≤ 0.25
Copper Cu:  ≤ 0.30
Vanadium V: ≤1.00
Mo Mo: 0.70 to 1.20
High wear resistance, vacuum heat treatable to HRC60°-62°, excellent processability
Applicable to complex and possible deformation of tool steel, high wear resistance and long life of various types of cold stamping die and cold cutting edge, reeling plate; cold extrusion forming, stretch film, beer stainless steel sheet and high hardness material Mod
Annealing to HB255
Thickness: 2.5mm-12mm-14mm-16mm

Comparative analysis
The domestically produced Cr12Mo1V1 steel, the United States D2 steel, and the Japanese SKD11 steel, although the chemical composition of the three are the same, the performance varies greatly. After heat treatment, the color of homemade steel is slightly orange red, deformation is generally very large, and it is easy to accidentally cause fatigue fracture in actual use; D2 steel is cold and white in color, hardness is lower than that of SKD11 steel, toughness is not as good as SKD11 steel, and small gaps are likely to occur at high stress; SKD11 steel is light and smooth, with the best overall performance.

Reference counterpart
China GB Standard Grade Cr12Mo1v1, US ASTM/UNS Standard Grade D2/T30402, International Standardization Organization (ISO) Standard Grade 160CrMoV12, German DIN Standard Material No. 1.2379, German DIN Standard Grade X155CrMoV12-1, French NF Standard Grade X160CrMoV12, British BS Standard Brand BD2, Japanese JIS Standard Brand No. SKD11, Japan Hitachi Standard Brand No. SLD, Japan DAIDO Standard Brand No. DC11, Japan No. 2 Plus (NACHl) Standard Brand No. CDS11, Austria B&R (BOHLER) Standard Brand No. K110, Sweden No. 1 (ASSAB) Standard Grade XW41

Typical application example
1) For refrigerator compressor back cover drawing die, quenching hardness 56~58HRC.
2) In order to improve the service life of the flat rolled D2 cold working die steel, the method of adding rare earth will greatly improve the wear resistance and impact toughness of the steel, so as to achieve the purpose of improving the service life of the round die flat rolled steel. .
3) Since the content of V and Mo in D2 steel is higher than that of Cr12MoV steel, it has better overall performance, and the traditional Cr12MoV steel will gradually be replaced.
4) The rolling die made of D2 steel and the cold die from the adjusting plate at the off-set stage can increase the service life by 5 to 6 times compared with Cr12MoV steel. Application

Florence Tang
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