0@@1@@1@@1 DIN 1.2358 Special Steel Flat
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Special Steel

DIN 1.2358 Special Steel Flat

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DIN 1.2358 Special Steel Flat
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DIN 1.2358 Special Steel Flat with Excellent Hardenability
 
Chemical Composition (%)

C

Si

Mn

P

S

Cr

Mo

V

0.55
0.65

0.20
0.40

0.70
0.90

≤
0.030

≤
0.030

4.20
4.80

0.30
0.70

0.15
0.25
 
Dimensions

Shape

Thick (mm)

Width (mm)

Flat

6-200

20-1000

Block

150-500

200-1000
 
Delivery Condition
EAF+LF+VD+(ESR), Hot rolled or Forged, Unmachined or Machined surface, UT 100% Passed
We offer Annealed and Q+T condition.
Annealed: Hardness≤240HB
Q+T: Hardness 30-34 HRC
  
Characteristics
It is a kind of medium alloyed cold work tool steel that is usually supplied quenched and tempered, high
hardening capacity, through hardenability and toughness, good weldability, excellent surface hardenability.
 
Applications
For making cutting inserts for segmented tool, punching tools, shear knives, plastic moulds, cutting tools.
  
Heat Treatment
Annealing
820 to 860°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. 240 HB.
 
Stress relieving
600 to 650°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
950 to 980°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.
 
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
 
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