DIN 1.2379 / AISI D2 Tool Steel

Cold work tool steel

DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
DIN 1.2379 / AISI D2 Tool Steel
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Description

Cold Work Tool Steel DIN 1.2379 / AISI D2

Equivalence

AISI / SAE

DIN / W.Nr

JIS

GB

D2

1.2379

SKD11

Cr12Mo1V1

 
Chemical Composition (%)

Steel Grade

C

Si

Mn

P

S

Cr

Mo

V

1.2379

1.45
1.60

0.10
0.60

0.20
0.60


0.030


0.030

11.00
13.00

0.70
1.00

0.70
1.00

D2

1.40
1.60

0.10
0.60

0.20
0.60


0.030


0.030

11.00
13.00

0.70
1.20

0.50
1.10

 
Dimension

Shape

Thick / Dia. (mm)

Width (mm)

Round

8-600

/

Flat

6-200

20-900

Block

150-500

200-1000

 
Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Hardness≤255HB,
Unmachined or Machined surface (Peeled, Turned, Milled, Grinded), UT 100% Passed
 
Characteristics
1. With good hardenability and wear resistance.
2. With high oxidation resistance, good corrosion resistance after quenching and polishing, small deformation after heat treatment.
 
Applications
For making different kinds of cold work molds with high accuracy and long service life, cutting tools and measuring instruments, such as complex-shaped piercing dies, threading screw plates, cold extrusion dies, cold cutting scissors, precision measuring tools etc.
 
Forging Technique

Heat
Temperature

Start Forging
Temperature

Finish Forging
Temperature

Cooling Method

1120-1160 °C

1050-1090 °C

≥850 °C

Thermal Annealing

 
Heat Treatment
Annealing
800 to 850°C
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.
Hardness after annealing: max. 255 HB.
 
Stress relieving
650 to 700°C
Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or incomplex shapes. After through heating, hold in neutral atmosphere for 1 to 2 hours.
 
Hardening
1020 to 1040°C
Complex shapes/air, simple shapes/air blast, oil, salt bath from (220 to 250°C or 500 to 550°C). Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness: 63 - 65 HRC.
 
Tempering
Slow heating to tempering temperature immediately after hardening/time in furnace 
1hour for each 20 mm of work piece thickness, but at least 2 hours/cooling in air.
For average hardness figures to be obtained, please refer to the tempering chart.
For certain cases we recommend to reduce tempering temperature and increase holding 
time. For certain applications requiring improved retention of hardness, a nitriding treatment is recommended.
 
What we can offer
What we can offer?
 
We offer a wide range of steel products in a wide variety of dimensions and executions, acc.to the common international specifications or customerized.
Machining and heat treatment are available.
Also, we advise you in choosing the right materials.
 
Shape Available
Solid round bar
Flat bar
Square bar
Hexagon bar
Block
Plate
Sheet
Wire rod
Strip

 

AISI

DIN

JIS

Stock

Application

Hot Work Tool Steel

H11

1.2343

SKD6

Die Casting Dies,Extrusion Dies, Hammer Dies,
Ram Dies,
Forging Dies
etc.

H13

1.2344

SKD61

H10

1.2365

SKD7

 

——

1.2367

——

 

L6

1.2714 / 1.2713

SKT4

H12

1.2606

SKD62

 

H21

1.2581

SKD5

Cold Work Tool Steel

D3

1.2080

SKD1

Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc.

——

1.2601

~SKD11

D2

1.2379

~SKD11

——

1.2379 MOD

DC53 (Daido)

D6

1.2436

——

 

O1

1.2510

SKS3

O2

1.2842

——

 

A2

1.2363

SKD12

 

S1

1.2550

——

 

S7

1.2357

——

 

——

1.2767

SKT6

 

L2

1.2210

——

 

Plastic
Mould Steel

P20

1.2311

——

      Mold Base,           Core & Cavity,         Bumper Mold             etc.         

P20+Ni

1.2738

——

P20+S

1.2312

——

——

1.2316

——

 

420

1.2083

SUS420J2

——

——

NAK80 (Daido)

Alloy Steel

4120

25CrMo4 / 1.7218

SCM420

 

Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings  etc.

4135

34CrMo4 / 1.7220

SCM435

 

4130

34CrMo4 / 1.7220

SCM430

4140

   42CrMo4 /        42CrMoS4 /                1.7225             

SCM440

4142

41CrMo4 / 1.7223

SCM440

 

4145H

——

——

 

4330V

——

——

 

4340

34CrNiMo6 / 1.6582

SNCM439

 

5115

16MnCr5 / 16MnCrS5 / 1.7131

 

 

5120

20MnCr5 / 20MnCrS5 / 1.7147

SMnC420H

 

5140

41Cr4 / 41CrS4 / 1.7035

SCr440

8620

21NiCrMo2 / 1.6523

SNCM220

 

8640

40NiCrMo2-2 / 1.6546

SNCM240

 

——

18CrNiMo7-6 / 17CrNiMo6 / 1.6587

——

 

9840

36CrNiMo4 / 1.6511

——

 

E71400

41CrAlMo7-10 / 1.8509

SACM1

 

——

34CrAlNi7 / 1.8550

——

 

Bearing Steel

E52100

100Cr6 / 1.3505

SUJ2

Bearing, Shafts
etc.

——

100CrMn6 / 1.3520

——

 

——

100CrMo7-3 / 1.3536

——

 

Spring Steel

5155

55Cr3 / 1.7176

SUP9

 

Springs

6150

51CrV4 / 1.8159

SUP10

 

9261

60CrSi7 / 1.7108

——

 

Carbon Steel

1010

CK10 / C10E / 1.1121

S10C

 

Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings  etc.

1020

C22 / 1.0402

S20C

1040

CK40 / C40E / 1.1186

S40C

1045

CK45 / C45E / 1.1191

S45C

1050

CK50 / C50E / 1.1206

S50C

1055

CK55 / C55E / 1.1203

S55C

 

1064

CK60 / C60E / 1.1221

S58C

 

High Speed Tool Steel

M2

1.3343

SKH51

Reamer,
      End-mill,         
Hob, Cutter, Bite, Drill, Punch, Tap, Brooch
etc.

M7

1.3348

——

 

M42

1.3247

SKH59

M35

1.3243

SKH55

T1

1.3355

SKH2

 

T15

1.3202

——

 

T42

1.3207

SKH57

 

 
Note:
1). √ means we have stoc
2). Delivery Condition:
Smelting: EAF+LF+VD (+ESR)
Making: Hot rolled, Cold rolled, Forged, Cold Drawn
Heat Treatment: Untreated, Annealing, N+T, Q+T
Surface: Black, Peeled, Turned, Milled, Grinded, Polished
 
Packing & Shipping
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