1.2738 Tool Steel Plate with High Hardness and High Temperature

Product Details
Customization: Available
Type: Steel Plate
Standard: ASTM, AISI, GB, JIS, DIN, BS
Manufacturer/Factory, Trading Company, Group Corporation

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  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
  • 1.2738 Tool Steel Plate with High Hardness and High Temperature
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Basic Info.

Model NO.
1.2738
Certification
ISO
Surface Treatment
Grinded, Peeled, Polished, Rough Turned
Technique
Hot Rolled, Forged
Application
Mold & Dies
Special Use
Cutting Tools, Measuring Tools, High-strength Steel Plate
Stock
Stock
Size Range
Diameter: 20-480mm
Delivery Condition
Annealed, Qunched and Tempered
Shape
Round, Square, Flat
MOQ
1000kgs
Sample
Provided
Payment
Tt/LC
Deliver Time
7-9days
Width
1500mm
Transport Package
in Seaworthy Packing
Specification
1.2379, AISI D2
Trademark
Bozhong
Origin
China
Production Capacity
5000tons/Month

Product Description

1.2738 Tool Steel plate can maintain high hardness and red hardness at high temperature
Description

1.2738 Tool Steel plate can maintain high hardness and red hardness at high temperature

1.Grand:
P20,H13,1.2344,SKD11,D2,Cr12Mov,M2,M42,M35,1.2738,1.2311,1.2714,718H,NAK80,1.2379
Tool steel is the steel used to make cutting tools, measuring tools, molds and wear-resistant tools. Tool steel has high hardness and can maintain high hardness and red hardness at high temperature, as well as high wear resistance and appropriate toughness. Tool steel is generally divided into carbon tool steel, alloy tool steel and high-speed tool steel.Tool SteelThe tool can keep its shape and size unchanged under the conditions of considerable pressure and friction.
1.2738 Tool Steel Plate with High Hardness and High Temperature


2.Process parameters
High-speed tool steel is also an alloy tool steel, which contains C, Mn, Si, Cr, V, W, Mo, Co. And it can be used to make high-speed rotary cutting tools, wear-resistant, high temperature resistant, which is Cr, The ratio of V, W and Mo is relatively large. Take W12Cr4V5Co5 as an example, Cr-> 3.75% -5%, V-> 4.5% -5.25%, W-> 11.75% -13%. The ratio of Cr and V should not be low Less than 3%. The content of P and S shall not exceed 0.030%.

The processing method of alloy tool steel is mainly pressure processing steel and cutting tool steel. There are many types of alloy tool steel, including cold work, hot work, non-magnetic, plastic mold steel, etc. At the same time, the ratio of Cr and V must not be too low. Selection of tool steel for cold work die

The choice of tool steel for cold work molds is based on the main failure mechanism of the mold in practical use. It is not enough to choose tool steel to have only knowledge of steel properties. It must also consider factors such as the number of parts produced, the type of material being processed, thickness, and hardness. A basic method of selecting tool steel is to first eliminate all the failure mechanisms except for wear, and then select the tool steel with the most suitable wear resistance to meet the production requirements.

3)1.2738 mold steel is a mold steel material produced according to the German DIN standard. It has relatively superior mechanical properties and good machinability among steels of similar brands. It is mainly used for the production of hot work molds, of which the application of plastic molds is the most common . In addition, the special pre-hardening treatment of the steel makes it have a good hardness when it leaves the factory, which can reduce the heat treatment link in the processing and production of normal molds and improve economic efficiency.
11.2738 mold steel is pre-hardened plastic mold steel

1.2738 Steel adopts advanced die steel refining technology, which is vacuum-melted Cr-Ni-Mo alloy steel. The steel has excellent polishability and photo-etching performance; excellent workability; good wear resistance; large molds have uniform hardness and dense structure; no risk of quenching cracks and heat treatment deformation, no heat treatment, and shorten the mold production cycle; good Surface nitriding performance; surface flame hardening can be carried out to improve the hardness and wear resistance of the mold surface. Before quenching, the mold must be fully softened and annealed. After quenching, it should be tempered in time and slowly heated.

The fine electrical discharge machining at the post-electrical machining stage should be performed with a small current and a high frequency to avoid damage to the mold. After the discharge, the surface of the mold should be ground to remove the "electric spark white layer", and then tempered again at 500 ºC to remove the stress.


When grinding the tempered mold, in order to prevent grinding cracks and surface softening, attention should be paid to: sufficient cooling; appropriate grinding pressure; reasonable processing technology.

The steel pre-hardened steel has good polishing performance, usually using alumina or gypsum polishing. The first is rough polishing, and then polishing with finer and finer abrasives. The polishing direction should be changed every time the abrasive is changed. The final polishing time should not be too long, otherwise it will affect the roughness of the mold surface.

Nitriding can increase the hardness of the mold surface, improve wear resistance and corrosion resistance. Although the steel has been pre-hardened, the hardness can still be increased by heat treatment
4).chemical composition
C: 0.35-0.46

Si: 0.2-0.4

Mn: 1.3-1.6

P: <= 0.035

S: <= 0.005

Cr: 1.8-2.2

Mo: 0.15-0.25

Ni: 0.9-1.2
5)Main performance
1. Material hardness is uniform

2. Excellent polishing performance

3. Good machining performance

4. Pre-hardened plastic mold steel

5. Nitrogen can be applied
 
1.-Skin pattern, pear pattern, stone pattern etching mold.

2.-Transparent plastics such as stationery boxes and daily necessities containers require high gloss molds.

3.- Especially suitable for hard plastic (PS) and non-shattering plastic (ABS) parts.
 
  1. - Large molds with high output requirements such as automobile bumpers, interior parts, refrigerators, and air conditioners.
6)Physical properties
(Sample hardness 340HBW, at room temperature and high temperature)

1) Temperature 20 ° C / 200 ° C / 400 ° C, density 7. 8g / cm / 7.75g / cm / 7. 7g / cm.

2) Temperature 20 ~ 200 ° C / 20 ~ 400 ° C, linear expansion coefficient: 12.6 × 10K / 13.5 × 10K.

3) Temperature 20 ° C / 200 ° C / 400 ° C, thermal conductivity 29.0W · (m · K) /29.5W· (m · K) /31.0W· (m · K)

4) Temperature 20 ° C / 200 ° C / 400 ° C, elastic modulus: 205000MPa / 200000MPa / 185000MPa


1.2738 Tool Steel Plate with High Hardness and High Temperature
 
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

 

 
7)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
 
8)Packing & Shipping
Hot keywords
:High quality tool steel, High quality 1.2379/D2 steel, Tool steel manufacturer, Special steel supplier


9)Contact us
Shanghai Bozhong Metal Group Co.,Ltd
Alloy Steel: Plate/Bar/Pipe/Profile/Wear resistant steel/Die Steel
Nickel Alloy: Hastelloy/Incoloy/Inconel/Monel/Stainless Steel
Aluminum Alloy: Plate/Bar/Pipe/Coil

Website:  shanghaibozhong.en.made-in-china.com
 

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