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D-2 (DIN-1.2379)

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Introduction

D-2 is a cold work steel that provide maximum wear resistance, great durability, exceptional front line maintenance and treating resistance. It is extensively used in threading rolls and dies, icy trimming, cutting, stamping tools & More.

Steel Properties : D2 steel is a 12% ledeburitic chromium steel. Maximum wear resistance, good toughness. Best cutting-edge endurance and resistance to tempering, can be nitrided after special heat treatment.

Applications : D2 steel is widely applied in the manufacturing of Thread rolling rolls and thread rolling dies, cold extrusion tools, cutting and stamping tools for sheet thicknesses up to 6mm, precision cutting tools up to 12 mm. Cold pilger mandrels, circular-shear blades, deep-drawing tools, pressure pads and highly resistant plastic moulds.

E.S.R. materials, high compression strength and fine robustness. The spheroical annealed make it easily processed by shearing and cutting with no crake while processing.

Applied in thickness no less than 2mm punch mould, all kind of small mould for shearing and cutter together with screw rolled or slappered mould as well as some other forming mould like rulers.

Chemical Composition : (%)

C Si Mn Cr
1.50-1.60 0.10-0.40 0.15-0.45 11.00-12.00
Mo W V P S
0.70-0.90 - 0.90-1.10 ≤0.030 ≤0.030

Grades Equivalent :

STANDARD
BRAZIL
AUSTRIA
SWEDEN
1.2379
VD2
K110
XW-41
EN
SLOVANIA
ITALY
JIS
X155CrVMo12-1
OCR12VM
DUYO S2379
SKD11
S.KOREA
CZECH REP.
CHINA
AMERICA
STD11
2002K
Cr12Mo1V1
D-2

Production Process :

Round Bar :

D2 round bar production process

Flat Bar :

D2 flat bar production process
UT Standard : Reduction Ratio : Delivery Status :
SEP 1921, (DEC.84)E/e As 1:4 or 1:5 As Hot rolled & forged, delivery condition : Annealed

Sizes of Round Bars :

Cold Drawn/Centreless Ground Bar
Hot Rolled & Annealed Peeled
Forged Annealed Turned
Φ 2.0 - 14.4mm
Φ 14.5 - 80.0mm
Φ 81.0 - 1000mm

Sizes of Flat Bars :

Thickness
Width
5mm - 150mm
5mm - 810mm

Sizes of Sheets :

Thickness
Width
Length
0.5mm - 12mm
810mm
2500mm

1) Heat Treatment Condition :

Quenching temperature : 1000-1040℃

Cooling Medium : Oil-cooling or air-cooling

Tempering temperature : 180-200℃, by two times;

Tempering Hardness : 63.0HRC

2) Heat Treatment Condition :

Quenching temperature : 1060-1080℃

Cooling Medium : Oil-cooling or air-cooling

Tempering temperature : 500-540℃, by two times;

Tempering Hardness : 59.0 - 61.0HRC

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